What is this unknown part?
Clash Royale CLAN TAG#URR8PPP
8
$begingroup$
I'm tracing a circuit. What is this part?
This is back of it.
identification
edited Jan 15 at 4:00
SamGibson
11k41537
asked Jan 15 at 3:52
JtlJtl
12619
$endgroup$
add a comment |
8
$begingroup$
I'm tracing a circuit. What is this part?
This is back of it.
identification
edited Jan 15 at 4:00
SamGibson
11k41537
asked Jan 15 at 3:52
JtlJtl
12619
$endgroup$
add a comment |
8
8
8
$begingroup$
I'm tracing a circuit. What is this part?
This is back of it.
identification
edited Jan 15 at 4:00
SamGibson
11k41537
asked Jan 15 at 3:52
JtlJtl
12619
$endgroup$
I'm tracing a circuit. What is this part?
This is back of it.
identification
identification
edited Jan 15 at 4:00
SamGibson
11k41537
asked Jan 15 at 3:52
JtlJtl
12619
edited Jan 15 at 4:00
SamGibson
11k41537
asked Jan 15 at 3:52
JtlJtl
12619
edited Jan 15 at 4:00
SamGibson
11k41537
edited Jan 15 at 4:00
SamGibson
11k41537
edited Jan 15 at 4:00
SamGibson
11k41537
11k41537
asked Jan 15 at 3:52
JtlJtl
12619
asked Jan 15 at 3:52
JtlJtl
12619
asked Jan 15 at 3:52
JtlJtl
12619
12619
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
23
$begingroup$
It's a 1A 125°C (nominal) thermal fuse, rated to fuse at 121°C +/-2°C
Operating temperature is up to 100°C.
Made by Xiamen SET Electronics Co., Ltd in Xiamen China.
It is not resettable. Needs to be replaced.
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
$endgroup$
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
5
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
1
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
15
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
1
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
|
show 1 more comment
8
$begingroup$
It is called Thermal cut-off (TCO) / Thermal fuse.
in the "SET F3" 3 indicates that it is rated to cut off at 121+/-2 ℃, 125 ℃(nominal temperature) rated for 100 ℃. where as F indicates rated for 1A load current.
answered Jan 15 at 6:16
ElectronElectron
1,694316
$endgroup$
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
add a comment |
5
$begingroup$
F1 indicates a fuse on the silk screen.
eg https://www.digikey.com/product-detail/en/littelfuse-inc/80812000440/WK6289-ND/2206338
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
$endgroup$
3
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
);
);
, "mathjax-editing");
StackExchange.ifUsing("editor", function ()
return StackExchange.using("schematics", function ()
StackExchange.schematics.init();
);
, "cicuitlab");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "135"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f417024%2fwhat-is-this-unknown-part%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
23
$begingroup$
It's a 1A 125°C (nominal) thermal fuse, rated to fuse at 121°C +/-2°C
Operating temperature is up to 100°C.
Made by Xiamen SET Electronics Co., Ltd in Xiamen China.
It is not resettable. Needs to be replaced.
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
$endgroup$
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
5
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
1
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
15
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
1
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
|
show 1 more comment
23
$begingroup$
It's a 1A 125°C (nominal) thermal fuse, rated to fuse at 121°C +/-2°C
Operating temperature is up to 100°C.
Made by Xiamen SET Electronics Co., Ltd in Xiamen China.
It is not resettable. Needs to be replaced.
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
$endgroup$
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
5
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
1
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
15
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
1
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
|
show 1 more comment
23
23
23
$begingroup$
It's a 1A 125°C (nominal) thermal fuse, rated to fuse at 121°C +/-2°C
Operating temperature is up to 100°C.
Made by Xiamen SET Electronics Co., Ltd in Xiamen China.
It is not resettable. Needs to be replaced.
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
$endgroup$
It's a 1A 125°C (nominal) thermal fuse, rated to fuse at 121°C +/-2°C
Operating temperature is up to 100°C.
Made by Xiamen SET Electronics Co., Ltd in Xiamen China.
It is not resettable. Needs to be replaced.
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
edited Jan 15 at 6:41
Ale..chenski
27.1k11865
27.1k11865
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
answered Jan 15 at 4:47
Spehro PefhanySpehro Pefhany
206k5156413
206k5156413
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
5
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
1
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
15
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
1
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
|
show 1 more comment
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
5
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
1
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
15
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
1
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
$begingroup$
Why can't I measure conduction in the two legs?
$endgroup$
– Jtl
Jan 15 at 4:58
5
5
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
$begingroup$
Maybe it's already burned out. Can't really tell from that photo- it should measure very low resistance. Or maybe you're not making good contact because the board is coated or whatever.
$endgroup$
– Spehro Pefhany
Jan 15 at 5:00
1
1
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
$begingroup$
That would explain what looks like a bubble in there.
$endgroup$
– Mazura
Jan 15 at 14:14
15
15
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
$begingroup$
Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C
$endgroup$
– rackandboneman
Jan 15 at 15:04
1
1
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
$begingroup$
Follow rackandboneman's advice "Before replacing it, consider looking for the reason why a device that is supposed never to go over 120°C, but needs costly measures to be really, really kept from going over 120°C, went over 120°C" Judging by that solder job it appears to have been replaced before.
$endgroup$
– cardstroker
Jan 15 at 16:37
|
show 1 more comment
8
$begingroup$
It is called Thermal cut-off (TCO) / Thermal fuse.
in the "SET F3" 3 indicates that it is rated to cut off at 121+/-2 ℃, 125 ℃(nominal temperature) rated for 100 ℃. where as F indicates rated for 1A load current.
answered Jan 15 at 6:16
ElectronElectron
1,694316
$endgroup$
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
add a comment |
8
$begingroup$
It is called Thermal cut-off (TCO) / Thermal fuse.
in the "SET F3" 3 indicates that it is rated to cut off at 121+/-2 ℃, 125 ℃(nominal temperature) rated for 100 ℃. where as F indicates rated for 1A load current.
answered Jan 15 at 6:16
ElectronElectron
1,694316
$endgroup$
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
add a comment |
8
8
8
$begingroup$
It is called Thermal cut-off (TCO) / Thermal fuse.
in the "SET F3" 3 indicates that it is rated to cut off at 121+/-2 ℃, 125 ℃(nominal temperature) rated for 100 ℃. where as F indicates rated for 1A load current.
answered Jan 15 at 6:16
ElectronElectron
1,694316
$endgroup$
It is called Thermal cut-off (TCO) / Thermal fuse.
in the "SET F3" 3 indicates that it is rated to cut off at 121+/-2 ℃, 125 ℃(nominal temperature) rated for 100 ℃. where as F indicates rated for 1A load current.
answered Jan 15 at 6:16
ElectronElectron
1,694316
answered Jan 15 at 6:16
ElectronElectron
1,694316
answered Jan 15 at 6:16
ElectronElectron
1,694316
answered Jan 15 at 6:16
ElectronElectron
1,694316
1,694316
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
add a comment |
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
If more than 1A passes through it. It can open too or only from temperature?
$endgroup$
– Jtl
Jan 15 at 6:21
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
In the original post and picture, the legs are no longer conducting and I checked inside. It has opened already. So this can occur without any obvious ambient rise in temperature. Isn't it.
$endgroup$
– Jtl
Jan 15 at 6:31
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
$begingroup$
Its already burned out. these are single time operation devices. yeh may be.
$endgroup$
– Electron
Jan 15 at 6:36
add a comment |
5
$begingroup$
F1 indicates a fuse on the silk screen.
eg https://www.digikey.com/product-detail/en/littelfuse-inc/80812000440/WK6289-ND/2206338
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
$endgroup$
3
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
add a comment |
5
$begingroup$
F1 indicates a fuse on the silk screen.
eg https://www.digikey.com/product-detail/en/littelfuse-inc/80812000440/WK6289-ND/2206338
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
$endgroup$
3
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
add a comment |
5
5
5
$begingroup$
F1 indicates a fuse on the silk screen.
eg https://www.digikey.com/product-detail/en/littelfuse-inc/80812000440/WK6289-ND/2206338
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
$endgroup$
F1 indicates a fuse on the silk screen.
eg https://www.digikey.com/product-detail/en/littelfuse-inc/80812000440/WK6289-ND/2206338
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
answered Jan 15 at 3:56
Sunnyskyguy EE75Sunnyskyguy EE75
65.4k22295
65.4k22295
3
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
add a comment |
3
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
3
3
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
$begingroup$
Seems to be a thermofuse to me. No current noted, but 125°C.
$endgroup$
– Janka
Jan 15 at 4:28
add a comment |
draft saved
draft discarded
Thanks for contributing an answer to Electrical Engineering Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f417024%2fwhat-is-this-unknown-part%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
