What kind of capacitor is this in the image?
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$begingroup$
The power supply of my model railway got broken.
I think the problem is the capacitor shown in the image. So does somebody know which kind of capacitor this is?

capacitor identification
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
The power supply of my model railway got broken.
I think the problem is the capacitor shown in the image. So does somebody know which kind of capacitor this is?

capacitor identification
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
6
$begingroup$
Looks like a 100 µF 35V electrolytic capacitor.
$endgroup$
– evildemonic
6 hours ago
1
$begingroup$
Measure the diameter (and height if there is a height restriction) with calipers. It tells you the specific package required for the replacement otherwise it may not fit onto the PCB.
$endgroup$
– Toor
4 hours ago
1
$begingroup$
Looks to me as though whatever is to the left of that capacitor is possibly the real cause of the problem. The cap itself looks fine other than a bit of gunk on the side from that other thing.
$endgroup$
– brhans
4 hours ago
add a comment |
$begingroup$
The power supply of my model railway got broken.
I think the problem is the capacitor shown in the image. So does somebody know which kind of capacitor this is?

capacitor identification
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
The power supply of my model railway got broken.
I think the problem is the capacitor shown in the image. So does somebody know which kind of capacitor this is?

capacitor identification
capacitor identification
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 5 hours ago
SamGibson
11.8k41739
11.8k41739
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 hours ago
tobiiastobiias
161
161
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
tobiias is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
6
$begingroup$
Looks like a 100 µF 35V electrolytic capacitor.
$endgroup$
– evildemonic
6 hours ago
1
$begingroup$
Measure the diameter (and height if there is a height restriction) with calipers. It tells you the specific package required for the replacement otherwise it may not fit onto the PCB.
$endgroup$
– Toor
4 hours ago
1
$begingroup$
Looks to me as though whatever is to the left of that capacitor is possibly the real cause of the problem. The cap itself looks fine other than a bit of gunk on the side from that other thing.
$endgroup$
– brhans
4 hours ago
add a comment |
6
$begingroup$
Looks like a 100 µF 35V electrolytic capacitor.
$endgroup$
– evildemonic
6 hours ago
1
$begingroup$
Measure the diameter (and height if there is a height restriction) with calipers. It tells you the specific package required for the replacement otherwise it may not fit onto the PCB.
$endgroup$
– Toor
4 hours ago
1
$begingroup$
Looks to me as though whatever is to the left of that capacitor is possibly the real cause of the problem. The cap itself looks fine other than a bit of gunk on the side from that other thing.
$endgroup$
– brhans
4 hours ago
6
6
$begingroup$
Looks like a 100 µF 35V electrolytic capacitor.
$endgroup$
– evildemonic
6 hours ago
$begingroup$
Looks like a 100 µF 35V electrolytic capacitor.
$endgroup$
– evildemonic
6 hours ago
1
1
$begingroup$
Measure the diameter (and height if there is a height restriction) with calipers. It tells you the specific package required for the replacement otherwise it may not fit onto the PCB.
$endgroup$
– Toor
4 hours ago
$begingroup$
Measure the diameter (and height if there is a height restriction) with calipers. It tells you the specific package required for the replacement otherwise it may not fit onto the PCB.
$endgroup$
– Toor
4 hours ago
1
1
$begingroup$
Looks to me as though whatever is to the left of that capacitor is possibly the real cause of the problem. The cap itself looks fine other than a bit of gunk on the side from that other thing.
$endgroup$
– brhans
4 hours ago
$begingroup$
Looks to me as though whatever is to the left of that capacitor is possibly the real cause of the problem. The cap itself looks fine other than a bit of gunk on the side from that other thing.
$endgroup$
– brhans
4 hours ago
add a comment |
3 Answers
3
active
oldest
votes
$begingroup$
It's a 100uF/35V aluminum electrolytic capacitor. Aluminum electrolytic capacitors do not, in my experience, use the 3-digit system. From this datasheet:

I see what appears to be flux on the PCB, but often caps will bulge up if they are dying. If it has actually leaked from the cap, then it should be replaced.
$endgroup$
2
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
add a comment |
$begingroup$
That is an aluminum electrolytic capacitor.
100 microfarad, rated for 35V.
I'm not sure there's anything wrong with it, though. It has score marks across the top. If it had gone bad, then it would have burst along those lines.
It looks like there's some glue on one side, but that's about it.
The trace to the left of it looks burned.
$endgroup$
add a comment |
$begingroup$
The capacitance value I state is based on the assumption that the "100" marked on the capacitor is a three digit code as apposed to the literal capacitance of the capacitor. This may not be the case, I am leaving my "answer" in the hope that someone can clear this up. -Edit
Second Edit. I did more digging and it looks like indeed this cap is 100uF, and what really sealed it for me is as Sphero Pefhany pointed out, a 10uF rating would only need a two digit marking as would any value up too 99uF. So it must be 100uF -Edit
That is a surface mount aluminum electrolytic capacitor It is rated for 35V with a capacity of 10.0 uF.
The "100" is a code that translates as first digit followed by a second digit finished by a power of ten digit. The scale starts at uF, for example to get 47uF the code is: 470, or if you have a code of 331 that's 33 * 10^1 uF or 330uF capacitance.
A chart with capacitor codes can be found in this document. link
$endgroup$
4
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
3
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
add a comment |
Your Answer
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
It's a 100uF/35V aluminum electrolytic capacitor. Aluminum electrolytic capacitors do not, in my experience, use the 3-digit system. From this datasheet:

I see what appears to be flux on the PCB, but often caps will bulge up if they are dying. If it has actually leaked from the cap, then it should be replaced.
$endgroup$
2
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
add a comment |
$begingroup$
It's a 100uF/35V aluminum electrolytic capacitor. Aluminum electrolytic capacitors do not, in my experience, use the 3-digit system. From this datasheet:

I see what appears to be flux on the PCB, but often caps will bulge up if they are dying. If it has actually leaked from the cap, then it should be replaced.
$endgroup$
2
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
add a comment |
$begingroup$
It's a 100uF/35V aluminum electrolytic capacitor. Aluminum electrolytic capacitors do not, in my experience, use the 3-digit system. From this datasheet:

I see what appears to be flux on the PCB, but often caps will bulge up if they are dying. If it has actually leaked from the cap, then it should be replaced.
$endgroup$
It's a 100uF/35V aluminum electrolytic capacitor. Aluminum electrolytic capacitors do not, in my experience, use the 3-digit system. From this datasheet:

I see what appears to be flux on the PCB, but often caps will bulge up if they are dying. If it has actually leaked from the cap, then it should be replaced.
edited 5 hours ago
answered 6 hours ago
Spehro PefhanySpehro Pefhany
215k5164437
215k5164437
2
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
add a comment |
2
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
2
2
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
$begingroup$
You are right about the 3 digit capacitance code. A second look at the datasheet linked by Enginerd shows that the three digit code applies to the part number, not the marking.
$endgroup$
– JRE
6 hours ago
add a comment |
$begingroup$
That is an aluminum electrolytic capacitor.
100 microfarad, rated for 35V.
I'm not sure there's anything wrong with it, though. It has score marks across the top. If it had gone bad, then it would have burst along those lines.
It looks like there's some glue on one side, but that's about it.
The trace to the left of it looks burned.
$endgroup$
add a comment |
$begingroup$
That is an aluminum electrolytic capacitor.
100 microfarad, rated for 35V.
I'm not sure there's anything wrong with it, though. It has score marks across the top. If it had gone bad, then it would have burst along those lines.
It looks like there's some glue on one side, but that's about it.
The trace to the left of it looks burned.
$endgroup$
add a comment |
$begingroup$
That is an aluminum electrolytic capacitor.
100 microfarad, rated for 35V.
I'm not sure there's anything wrong with it, though. It has score marks across the top. If it had gone bad, then it would have burst along those lines.
It looks like there's some glue on one side, but that's about it.
The trace to the left of it looks burned.
$endgroup$
That is an aluminum electrolytic capacitor.
100 microfarad, rated for 35V.
I'm not sure there's anything wrong with it, though. It has score marks across the top. If it had gone bad, then it would have burst along those lines.
It looks like there's some glue on one side, but that's about it.
The trace to the left of it looks burned.
edited 6 hours ago
answered 6 hours ago
JREJRE
23.8k54379
23.8k54379
add a comment |
add a comment |
$begingroup$
The capacitance value I state is based on the assumption that the "100" marked on the capacitor is a three digit code as apposed to the literal capacitance of the capacitor. This may not be the case, I am leaving my "answer" in the hope that someone can clear this up. -Edit
Second Edit. I did more digging and it looks like indeed this cap is 100uF, and what really sealed it for me is as Sphero Pefhany pointed out, a 10uF rating would only need a two digit marking as would any value up too 99uF. So it must be 100uF -Edit
That is a surface mount aluminum electrolytic capacitor It is rated for 35V with a capacity of 10.0 uF.
The "100" is a code that translates as first digit followed by a second digit finished by a power of ten digit. The scale starts at uF, for example to get 47uF the code is: 470, or if you have a code of 331 that's 33 * 10^1 uF or 330uF capacitance.
A chart with capacitor codes can be found in this document. link
$endgroup$
4
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
3
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
add a comment |
$begingroup$
The capacitance value I state is based on the assumption that the "100" marked on the capacitor is a three digit code as apposed to the literal capacitance of the capacitor. This may not be the case, I am leaving my "answer" in the hope that someone can clear this up. -Edit
Second Edit. I did more digging and it looks like indeed this cap is 100uF, and what really sealed it for me is as Sphero Pefhany pointed out, a 10uF rating would only need a two digit marking as would any value up too 99uF. So it must be 100uF -Edit
That is a surface mount aluminum electrolytic capacitor It is rated for 35V with a capacity of 10.0 uF.
The "100" is a code that translates as first digit followed by a second digit finished by a power of ten digit. The scale starts at uF, for example to get 47uF the code is: 470, or if you have a code of 331 that's 33 * 10^1 uF or 330uF capacitance.
A chart with capacitor codes can be found in this document. link
$endgroup$
4
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
3
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
add a comment |
$begingroup$
The capacitance value I state is based on the assumption that the "100" marked on the capacitor is a three digit code as apposed to the literal capacitance of the capacitor. This may not be the case, I am leaving my "answer" in the hope that someone can clear this up. -Edit
Second Edit. I did more digging and it looks like indeed this cap is 100uF, and what really sealed it for me is as Sphero Pefhany pointed out, a 10uF rating would only need a two digit marking as would any value up too 99uF. So it must be 100uF -Edit
That is a surface mount aluminum electrolytic capacitor It is rated for 35V with a capacity of 10.0 uF.
The "100" is a code that translates as first digit followed by a second digit finished by a power of ten digit. The scale starts at uF, for example to get 47uF the code is: 470, or if you have a code of 331 that's 33 * 10^1 uF or 330uF capacitance.
A chart with capacitor codes can be found in this document. link
$endgroup$
The capacitance value I state is based on the assumption that the "100" marked on the capacitor is a three digit code as apposed to the literal capacitance of the capacitor. This may not be the case, I am leaving my "answer" in the hope that someone can clear this up. -Edit
Second Edit. I did more digging and it looks like indeed this cap is 100uF, and what really sealed it for me is as Sphero Pefhany pointed out, a 10uF rating would only need a two digit marking as would any value up too 99uF. So it must be 100uF -Edit
That is a surface mount aluminum electrolytic capacitor It is rated for 35V with a capacity of 10.0 uF.
The "100" is a code that translates as first digit followed by a second digit finished by a power of ten digit. The scale starts at uF, for example to get 47uF the code is: 470, or if you have a code of 331 that's 33 * 10^1 uF or 330uF capacitance.
A chart with capacitor codes can be found in this document. link
edited 4 hours ago
answered 6 hours ago
Clipboard_Waving_EnginerdClipboard_Waving_Enginerd
16216
16216
4
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
3
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
add a comment |
4
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
3
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
4
4
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
$begingroup$
No, it is 100uF. In fact the photo in your link shows how 10uF capacitors are marked, which is different from the part number.
$endgroup$
– Spehro Pefhany
6 hours ago
3
3
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
I Agree with Sphero Pefhany.
$endgroup$
– MikeTeX
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
$begingroup$
@SpehroPefhany You are right that the chart (STANDARD VALUES AND CASE SIZES) data sheet I posted is explicitly for a part number breakdown and not necessary related to the actual markings on the cap. However I have seen this convention used for many capacitors with this type of form factor which is how my answer came about. I can't cite any actual standard nor can I find a source that states when the actual value or an abbreviated value is used. I'll update my answer to highlight this ambiguity.
$endgroup$
– Clipboard_Waving_Enginerd
5 hours ago
add a comment |
tobiias is a new contributor. Be nice, and check out our Code of Conduct.
tobiias is a new contributor. Be nice, and check out our Code of Conduct.
tobiias is a new contributor. Be nice, and check out our Code of Conduct.
tobiias is a new contributor. Be nice, and check out our Code of Conduct.
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6
$begingroup$
Looks like a 100 µF 35V electrolytic capacitor.
$endgroup$
– evildemonic
6 hours ago
1
$begingroup$
Measure the diameter (and height if there is a height restriction) with calipers. It tells you the specific package required for the replacement otherwise it may not fit onto the PCB.
$endgroup$
– Toor
4 hours ago
1
$begingroup$
Looks to me as though whatever is to the left of that capacitor is possibly the real cause of the problem. The cap itself looks fine other than a bit of gunk on the side from that other thing.
$endgroup$
– brhans
4 hours ago