How do I identify this component? It just says 0 on it [duplicate]
$begingroup$
This question already has an answer here:
How to identify this particular SMD component?
3 answers
Can anyone help me identify this component? It just says 0 or D on it (I think it's a zero). I tested it for conductivity with a multimeter - doesn't seem to have any (tried both polarities in case it's a diode). Tested for resistance: nothing (i.e. infinite resistance), although I'm not 100% sure I was touching the contact points correctly, so don't take this as an ultimate measurement. Thanks in advance!
identification components
asked Jan 20 at 14:05
Todor K.Todor K.
16514
$endgroup$
marked as duplicate by Nick Alexeev♦ Jan 21 at 16:41
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
|
show 1 more comment
$begingroup$
This question already has an answer here:
How to identify this particular SMD component?
3 answers
Can anyone help me identify this component? It just says 0 or D on it (I think it's a zero). I tested it for conductivity with a multimeter - doesn't seem to have any (tried both polarities in case it's a diode). Tested for resistance: nothing (i.e. infinite resistance), although I'm not 100% sure I was touching the contact points correctly, so don't take this as an ultimate measurement. Thanks in advance!
identification components
asked Jan 20 at 14:05
Todor K.Todor K.
16514
$endgroup$
marked as duplicate by Nick Alexeev♦ Jan 21 at 16:41
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
21
$begingroup$
That's a 0Ω resistor, a brigde in form of a chip resistor, so it can be easily placed by a machine.
$endgroup$
– Janka
Jan 20 at 14:12
$begingroup$
Thanks. Well, I unsoldered it from the board and tried to test its conductivity, but there is none. I guess I could have damaged it during removal...
$endgroup$
– Todor K.
Jan 20 at 14:25
$begingroup$
Zero ohm resistors are typically just there to connect point A to point B. Our manufacturers sometimes have these. Sometimes it's there to force voltage to enable something on the circuit, usually for testing.
$endgroup$
– KingDuken
Jan 20 at 17:38
$begingroup$
I would bet money that that is a zero ohm resistor. You didn't damage it. You just aren't getting a good reading of the resistance for some reason. I have never seen one go open-circuit.
$endgroup$
– mkeith
Jan 21 at 10:22
1
$begingroup$
Just a note on 0 ohm resistors; they are guaranteed to be less than 50 milliohms (for the vast majority of cases) so don't try bypassing a low resistance (current sense for example) with one as you may not achieve the aim.
$endgroup$
– Peter Smith
Jan 21 at 10:32
|
show 1 more comment
$begingroup$
This question already has an answer here:
How to identify this particular SMD component?
3 answers
Can anyone help me identify this component? It just says 0 or D on it (I think it's a zero). I tested it for conductivity with a multimeter - doesn't seem to have any (tried both polarities in case it's a diode). Tested for resistance: nothing (i.e. infinite resistance), although I'm not 100% sure I was touching the contact points correctly, so don't take this as an ultimate measurement. Thanks in advance!
identification components
asked Jan 20 at 14:05
Todor K.Todor K.
16514
$endgroup$
This question already has an answer here:
How to identify this particular SMD component?
3 answers
Can anyone help me identify this component? It just says 0 or D on it (I think it's a zero). I tested it for conductivity with a multimeter - doesn't seem to have any (tried both polarities in case it's a diode). Tested for resistance: nothing (i.e. infinite resistance), although I'm not 100% sure I was touching the contact points correctly, so don't take this as an ultimate measurement. Thanks in advance!
This question already has an answer here:
How to identify this particular SMD component?
3 answers
identification components
identification components
asked Jan 20 at 14:05
Todor K.Todor K.
16514
asked Jan 20 at 14:05
Todor K.Todor K.
16514
asked Jan 20 at 14:05
Todor K.Todor K.
16514
asked Jan 20 at 14:05
Todor K.Todor K.
16514
asked Jan 20 at 14:05
Todor K.Todor K.
16514
16514
marked as duplicate by Nick Alexeev♦ Jan 21 at 16:41
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
marked as duplicate by Nick Alexeev♦ Jan 21 at 16:41
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
21
$begingroup$
That's a 0Ω resistor, a brigde in form of a chip resistor, so it can be easily placed by a machine.
$endgroup$
– Janka
Jan 20 at 14:12
$begingroup$
Thanks. Well, I unsoldered it from the board and tried to test its conductivity, but there is none. I guess I could have damaged it during removal...
$endgroup$
– Todor K.
Jan 20 at 14:25
$begingroup$
Zero ohm resistors are typically just there to connect point A to point B. Our manufacturers sometimes have these. Sometimes it's there to force voltage to enable something on the circuit, usually for testing.
$endgroup$
– KingDuken
Jan 20 at 17:38
$begingroup$
I would bet money that that is a zero ohm resistor. You didn't damage it. You just aren't getting a good reading of the resistance for some reason. I have never seen one go open-circuit.
$endgroup$
– mkeith
Jan 21 at 10:22
1
$begingroup$
Just a note on 0 ohm resistors; they are guaranteed to be less than 50 milliohms (for the vast majority of cases) so don't try bypassing a low resistance (current sense for example) with one as you may not achieve the aim.
$endgroup$
– Peter Smith
Jan 21 at 10:32
|
show 1 more comment
21
$begingroup$
That's a 0Ω resistor, a brigde in form of a chip resistor, so it can be easily placed by a machine.
$endgroup$
– Janka
Jan 20 at 14:12
$begingroup$
Thanks. Well, I unsoldered it from the board and tried to test its conductivity, but there is none. I guess I could have damaged it during removal...
$endgroup$
– Todor K.
Jan 20 at 14:25
$begingroup$
Zero ohm resistors are typically just there to connect point A to point B. Our manufacturers sometimes have these. Sometimes it's there to force voltage to enable something on the circuit, usually for testing.
$endgroup$
– KingDuken
Jan 20 at 17:38
$begingroup$
I would bet money that that is a zero ohm resistor. You didn't damage it. You just aren't getting a good reading of the resistance for some reason. I have never seen one go open-circuit.
$endgroup$
– mkeith
Jan 21 at 10:22
1
$begingroup$
Just a note on 0 ohm resistors; they are guaranteed to be less than 50 milliohms (for the vast majority of cases) so don't try bypassing a low resistance (current sense for example) with one as you may not achieve the aim.
$endgroup$
– Peter Smith
Jan 21 at 10:32
21
21
$begingroup$
That's a 0Ω resistor, a brigde in form of a chip resistor, so it can be easily placed by a machine.
$endgroup$
– Janka
Jan 20 at 14:12
$begingroup$
That's a 0Ω resistor, a brigde in form of a chip resistor, so it can be easily placed by a machine.
$endgroup$
– Janka
Jan 20 at 14:12
$begingroup$
Thanks. Well, I unsoldered it from the board and tried to test its conductivity, but there is none. I guess I could have damaged it during removal...
$endgroup$
– Todor K.
Jan 20 at 14:25
$begingroup$
Thanks. Well, I unsoldered it from the board and tried to test its conductivity, but there is none. I guess I could have damaged it during removal...
$endgroup$
– Todor K.
Jan 20 at 14:25
$begingroup$
Zero ohm resistors are typically just there to connect point A to point B. Our manufacturers sometimes have these. Sometimes it's there to force voltage to enable something on the circuit, usually for testing.
$endgroup$
– KingDuken
Jan 20 at 17:38
$begingroup$
Zero ohm resistors are typically just there to connect point A to point B. Our manufacturers sometimes have these. Sometimes it's there to force voltage to enable something on the circuit, usually for testing.
$endgroup$
– KingDuken
Jan 20 at 17:38
$begingroup$
I would bet money that that is a zero ohm resistor. You didn't damage it. You just aren't getting a good reading of the resistance for some reason. I have never seen one go open-circuit.
$endgroup$
– mkeith
Jan 21 at 10:22
$begingroup$
I would bet money that that is a zero ohm resistor. You didn't damage it. You just aren't getting a good reading of the resistance for some reason. I have never seen one go open-circuit.
$endgroup$
– mkeith
Jan 21 at 10:22
1
1
$begingroup$
Just a note on 0 ohm resistors; they are guaranteed to be less than 50 milliohms (for the vast majority of cases) so don't try bypassing a low resistance (current sense for example) with one as you may not achieve the aim.
$endgroup$
– Peter Smith
Jan 21 at 10:32
$begingroup$
Just a note on 0 ohm resistors; they are guaranteed to be less than 50 milliohms (for the vast majority of cases) so don't try bypassing a low resistance (current sense for example) with one as you may not achieve the aim.
$endgroup$
– Peter Smith
Jan 21 at 10:32
|
show 1 more comment
4 Answers
4
active
oldest
votes
$begingroup$
This is a 0 Ohm resistor. Probably in 0805 package.
If the multimeter shows infinity (open circuit), or any significant resistance > 0, when measuring the element's resistance it means that it is damaged. The multimeter should show zero resistance when measuring such "resistor".
On the PCB you can replace it with a solder blob or a piece of wire.
edited Jan 21 at 12:33
JimmyB
2,8201314
answered Jan 20 at 14:27
filofilo
6,66011234
$endgroup$
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
9
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
add a comment |
$begingroup$
That is an 0 Ohm Resistance. they also called SMD jumper resistors.
They are used as wire links to connect the traces on Surface mount boards, which can be assembled using pick and place machines easily. (same like jumper wires in through holes boards).
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
$endgroup$
add a comment |
$begingroup$
It is an SMD resistor. As stated in the comments, the number indicates its resistance value; namely 0.
You mentioned you couldn't measure any resistance across it. Are you sure it's not coated?
answered Jan 20 at 14:27
MetricMetric
2067
$endgroup$
2
$begingroup$
Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
$endgroup$
– Todor K.
Jan 20 at 14:31
$begingroup$
On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
$endgroup$
– Hermann
Jan 20 at 22:14
2
$begingroup$
@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
$endgroup$
– John Burger
Jan 20 at 23:31
$begingroup$
@TodorK. If you are able to, can you tell us the purpose of the board?
$endgroup$
– Metric
Jan 21 at 4:29
$begingroup$
@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
$endgroup$
– Hermann
Jan 21 at 8:55
|
show 3 more comments
$begingroup$
Be careful using a solder blob or too heavy a gauge of wire you might blow other components in the circuit. An analogy: Your car has blown a 5A fuse and your radio stops working, well you check and you don't have any 5A fuses on hand. So.... you substitute a 10A fuse instead, you could cause damage to the radio or whatever shares that circuit because too much current flowing through the 10A fuse. Better check to see if deices in that circuit could have caused to infinity reading in the 0 ohm resistor.
answered Jan 21 at 9:32
E.C.E.C.
11
$endgroup$
$begingroup$
A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
$endgroup$
– sleblanc
Jan 21 at 15:55
add a comment |
4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
This is a 0 Ohm resistor. Probably in 0805 package.
If the multimeter shows infinity (open circuit), or any significant resistance > 0, when measuring the element's resistance it means that it is damaged. The multimeter should show zero resistance when measuring such "resistor".
On the PCB you can replace it with a solder blob or a piece of wire.
edited Jan 21 at 12:33
JimmyB
2,8201314
answered Jan 20 at 14:27
filofilo
6,66011234
$endgroup$
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
9
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
add a comment |
$begingroup$
This is a 0 Ohm resistor. Probably in 0805 package.
If the multimeter shows infinity (open circuit), or any significant resistance > 0, when measuring the element's resistance it means that it is damaged. The multimeter should show zero resistance when measuring such "resistor".
On the PCB you can replace it with a solder blob or a piece of wire.
edited Jan 21 at 12:33
JimmyB
2,8201314
answered Jan 20 at 14:27
filofilo
6,66011234
$endgroup$
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
9
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
add a comment |
$begingroup$
This is a 0 Ohm resistor. Probably in 0805 package.
If the multimeter shows infinity (open circuit), or any significant resistance > 0, when measuring the element's resistance it means that it is damaged. The multimeter should show zero resistance when measuring such "resistor".
On the PCB you can replace it with a solder blob or a piece of wire.
edited Jan 21 at 12:33
JimmyB
2,8201314
answered Jan 20 at 14:27
filofilo
6,66011234
$endgroup$
This is a 0 Ohm resistor. Probably in 0805 package.
If the multimeter shows infinity (open circuit), or any significant resistance > 0, when measuring the element's resistance it means that it is damaged. The multimeter should show zero resistance when measuring such "resistor".
On the PCB you can replace it with a solder blob or a piece of wire.
edited Jan 21 at 12:33
JimmyB
2,8201314
answered Jan 20 at 14:27
filofilo
6,66011234
edited Jan 21 at 12:33
JimmyB
2,8201314
edited Jan 21 at 12:33
JimmyB
2,8201314
edited Jan 21 at 12:33
JimmyB
2,8201314
2,8201314
answered Jan 20 at 14:27
filofilo
6,66011234
answered Jan 20 at 14:27
filofilo
6,66011234
answered Jan 20 at 14:27
filofilo
6,66011234
6,66011234
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
9
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
add a comment |
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
9
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
$begingroup$
Can you clarify your second sentence? Why can an open circuit be replaced with a wire?
$endgroup$
– Pedro A
Jan 20 at 17:50
9
9
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
It wasn't intended to be an open circuit. The connection was intended to be shorted. This is the reason for the second sentence.
$endgroup$
– Metric
Jan 20 at 18:14
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
$begingroup$
A lot of multimeters would not show zero Ohms but some value below 1 Ohm or below 100 milliohm.
$endgroup$
– Uwe
Jan 21 at 10:23
add a comment |
$begingroup$
That is an 0 Ohm Resistance. they also called SMD jumper resistors.
They are used as wire links to connect the traces on Surface mount boards, which can be assembled using pick and place machines easily. (same like jumper wires in through holes boards).
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
$endgroup$
add a comment |
$begingroup$
That is an 0 Ohm Resistance. they also called SMD jumper resistors.
They are used as wire links to connect the traces on Surface mount boards, which can be assembled using pick and place machines easily. (same like jumper wires in through holes boards).
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
$endgroup$
add a comment |
$begingroup$
That is an 0 Ohm Resistance. they also called SMD jumper resistors.
They are used as wire links to connect the traces on Surface mount boards, which can be assembled using pick and place machines easily. (same like jumper wires in through holes boards).
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
$endgroup$
That is an 0 Ohm Resistance. they also called SMD jumper resistors.
They are used as wire links to connect the traces on Surface mount boards, which can be assembled using pick and place machines easily. (same like jumper wires in through holes boards).
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
edited Jan 21 at 18:29
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
answered Jan 20 at 14:46
Satish SingupuramSatish Singupuram
1,713317
1,713317
add a comment |
add a comment |
$begingroup$
It is an SMD resistor. As stated in the comments, the number indicates its resistance value; namely 0.
You mentioned you couldn't measure any resistance across it. Are you sure it's not coated?
answered Jan 20 at 14:27
MetricMetric
2067
$endgroup$
2
$begingroup$
Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
$endgroup$
– Todor K.
Jan 20 at 14:31
$begingroup$
On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
$endgroup$
– Hermann
Jan 20 at 22:14
2
$begingroup$
@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
$endgroup$
– John Burger
Jan 20 at 23:31
$begingroup$
@TodorK. If you are able to, can you tell us the purpose of the board?
$endgroup$
– Metric
Jan 21 at 4:29
$begingroup$
@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
$endgroup$
– Hermann
Jan 21 at 8:55
|
show 3 more comments
$begingroup$
It is an SMD resistor. As stated in the comments, the number indicates its resistance value; namely 0.
You mentioned you couldn't measure any resistance across it. Are you sure it's not coated?
answered Jan 20 at 14:27
MetricMetric
2067
$endgroup$
2
$begingroup$
Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
$endgroup$
– Todor K.
Jan 20 at 14:31
$begingroup$
On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
$endgroup$
– Hermann
Jan 20 at 22:14
2
$begingroup$
@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
$endgroup$
– John Burger
Jan 20 at 23:31
$begingroup$
@TodorK. If you are able to, can you tell us the purpose of the board?
$endgroup$
– Metric
Jan 21 at 4:29
$begingroup$
@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
$endgroup$
– Hermann
Jan 21 at 8:55
|
show 3 more comments
$begingroup$
It is an SMD resistor. As stated in the comments, the number indicates its resistance value; namely 0.
You mentioned you couldn't measure any resistance across it. Are you sure it's not coated?
answered Jan 20 at 14:27
MetricMetric
2067
$endgroup$
It is an SMD resistor. As stated in the comments, the number indicates its resistance value; namely 0.
You mentioned you couldn't measure any resistance across it. Are you sure it's not coated?
answered Jan 20 at 14:27
MetricMetric
2067
answered Jan 20 at 14:27
MetricMetric
2067
answered Jan 20 at 14:27
MetricMetric
2067
answered Jan 20 at 14:27
MetricMetric
2067
2067
2
$begingroup$
Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
$endgroup$
– Todor K.
Jan 20 at 14:31
$begingroup$
On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
$endgroup$
– Hermann
Jan 20 at 22:14
2
$begingroup$
@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
$endgroup$
– John Burger
Jan 20 at 23:31
$begingroup$
@TodorK. If you are able to, can you tell us the purpose of the board?
$endgroup$
– Metric
Jan 21 at 4:29
$begingroup$
@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
$endgroup$
– Hermann
Jan 21 at 8:55
|
show 3 more comments
2
$begingroup$
Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
$endgroup$
– Todor K.
Jan 20 at 14:31
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On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
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– Hermann
Jan 20 at 22:14
2
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@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
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– John Burger
Jan 20 at 23:31
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@TodorK. If you are able to, can you tell us the purpose of the board?
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– Metric
Jan 21 at 4:29
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@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
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– Hermann
Jan 21 at 8:55
2
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Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
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– Todor K.
Jan 20 at 14:31
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Thanks. I removed it and tried testing for resistance/conductivity using its contact points on the underside, still the same result (no conductivity). But maybe those contact points or the "resistor" itself got damaged during removal. Anyway, it seems like everyone is pretty confident that it's a 0-ohm resistor and that's what I wanted to find out. I'll replace it with a jumper of some sort. Thanks!
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– Todor K.
Jan 20 at 14:31
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On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
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– Hermann
Jan 20 at 22:14
$begingroup$
On a side note: I have seen zero ohm resistors being used instead of a fuse, especially in IT hardware. I strongly advise not to replace it with a solder blob or a wire until you are sure the rest of the circuit is fine. Look out for a nearby voltage regulator. It may have shorted to protect the device from over-voltage.
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– Hermann
Jan 20 at 22:14
2
2
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@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
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– John Burger
Jan 20 at 23:31
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@Hermann I think you mean "opened" - it was already a short. Using an SMD resistor as a fuse would be like using a bolt instead of a fuse: they're not exactly designed to 'blow' like a fuse! The "use resistor instead of a fuse" is more to do with "fuses are expensive; resistors are cheap; this cheap circuit isn't worth protecting with a fuse; I'll just use a resistor".
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– John Burger
Jan 20 at 23:31
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@TodorK. If you are able to, can you tell us the purpose of the board?
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– Metric
Jan 21 at 4:29
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@TodorK. If you are able to, can you tell us the purpose of the board?
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– Metric
Jan 21 at 4:29
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@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
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– Hermann
Jan 21 at 8:55
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@JohnBurger The resistor opened, but the voltage regulator may have shorted. Indeed, it feels like a bold move, but have a look at a a discussion regarding a real-world example here. More to see here and to read here.
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– Hermann
Jan 21 at 8:55
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show 3 more comments
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Be careful using a solder blob or too heavy a gauge of wire you might blow other components in the circuit. An analogy: Your car has blown a 5A fuse and your radio stops working, well you check and you don't have any 5A fuses on hand. So.... you substitute a 10A fuse instead, you could cause damage to the radio or whatever shares that circuit because too much current flowing through the 10A fuse. Better check to see if deices in that circuit could have caused to infinity reading in the 0 ohm resistor.
answered Jan 21 at 9:32
E.C.E.C.
11
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A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
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– sleblanc
Jan 21 at 15:55
add a comment |
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Be careful using a solder blob or too heavy a gauge of wire you might blow other components in the circuit. An analogy: Your car has blown a 5A fuse and your radio stops working, well you check and you don't have any 5A fuses on hand. So.... you substitute a 10A fuse instead, you could cause damage to the radio or whatever shares that circuit because too much current flowing through the 10A fuse. Better check to see if deices in that circuit could have caused to infinity reading in the 0 ohm resistor.
answered Jan 21 at 9:32
E.C.E.C.
11
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A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
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– sleblanc
Jan 21 at 15:55
add a comment |
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Be careful using a solder blob or too heavy a gauge of wire you might blow other components in the circuit. An analogy: Your car has blown a 5A fuse and your radio stops working, well you check and you don't have any 5A fuses on hand. So.... you substitute a 10A fuse instead, you could cause damage to the radio or whatever shares that circuit because too much current flowing through the 10A fuse. Better check to see if deices in that circuit could have caused to infinity reading in the 0 ohm resistor.
answered Jan 21 at 9:32
E.C.E.C.
11
$endgroup$
Be careful using a solder blob or too heavy a gauge of wire you might blow other components in the circuit. An analogy: Your car has blown a 5A fuse and your radio stops working, well you check and you don't have any 5A fuses on hand. So.... you substitute a 10A fuse instead, you could cause damage to the radio or whatever shares that circuit because too much current flowing through the 10A fuse. Better check to see if deices in that circuit could have caused to infinity reading in the 0 ohm resistor.
answered Jan 21 at 9:32
E.C.E.C.
11
answered Jan 21 at 9:32
E.C.E.C.
11
answered Jan 21 at 9:32
E.C.E.C.
11
answered Jan 21 at 9:32
E.C.E.C.
11
11
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A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
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– sleblanc
Jan 21 at 15:55
add a comment |
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A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
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– sleblanc
Jan 21 at 15:55
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A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
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– sleblanc
Jan 21 at 15:55
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A 0-ohm resistor should absolutely, never be used as a fuse. The traces that lead to the resistor probably have a current rating far lower than that resistor, anyhow.
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– sleblanc
Jan 21 at 15:55
add a comment |
21
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That's a 0Ω resistor, a brigde in form of a chip resistor, so it can be easily placed by a machine.
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– Janka
Jan 20 at 14:12
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Thanks. Well, I unsoldered it from the board and tried to test its conductivity, but there is none. I guess I could have damaged it during removal...
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– Todor K.
Jan 20 at 14:25
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Zero ohm resistors are typically just there to connect point A to point B. Our manufacturers sometimes have these. Sometimes it's there to force voltage to enable something on the circuit, usually for testing.
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– KingDuken
Jan 20 at 17:38
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I would bet money that that is a zero ohm resistor. You didn't damage it. You just aren't getting a good reading of the resistance for some reason. I have never seen one go open-circuit.
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– mkeith
Jan 21 at 10:22
1
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Just a note on 0 ohm resistors; they are guaranteed to be less than 50 milliohms (for the vast majority of cases) so don't try bypassing a low resistance (current sense for example) with one as you may not achieve the aim.
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– Peter Smith
Jan 21 at 10:32