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Identify these parts?
Hi,
I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. If you Google these, you come up with all those companies that can sell you 1000 at a time, but I can't find any data to tell me what they are or an equivalent. Any help appreciated., thanks, Gareth. |
Identify these parts?
"Gareth Magennis" wrote in
: Hi, I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. If you Google these, you come up with all those companies that can sell you 1000 at a time, but I can't find any data to tell me what they are or an equivalent. http://www.galco.com/scripts/cgiip.e...t=cat&line=PAS SIVE&cat=MOV&mfg=&source=ADWORDS&gclid=CPyUkqrYxpM CFQKaFQodjRz0Cg metal oxide varistor. MOV http://www.galco.com/circuit/TechTips-MOV.htm Acts like a short circuit to voltage spikes. -- bz please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
Identify these parts?
"bz" wrote in message 98.139... "Gareth Magennis" wrote in : Hi, I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. If you Google these, you come up with all those companies that can sell you 1000 at a time, but I can't find any data to tell me what they are or an equivalent. http://www.galco.com/scripts/cgiip.e...t=cat&line=PAS SIVE&cat=MOV&mfg=&source=ADWORDS&gclid=CPyUkqrYxpM CFQKaFQodjRz0Cg metal oxide varistor. MOV http://www.galco.com/circuit/TechTips-MOV.htm Acts like a short circuit to voltage spikes. Makes sense now of course. Thanks. Gareth. |
Identify these parts?
On Tue, 27 May 2008 11:12:51 +0100, "Gareth Magennis"
put finger to keyboard and composed: I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. This site ... http://www.sourceesb.com/PartNumber....e=W&search=KC1 .... suggests that the KC103P is manufactured by Murata Electronics North America. This site ... http://www.usbid.com .... lists the KC103M as a capacitor made by "S/M". I suspect the part may be a high voltage 10nF ceramic cap. It would help to know to which other parts these devices connect. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
Identify these parts?
On Tuesday, May 27, 2008 at 5:12:51 AM UTC-5, Gareth Magennis wrote:
Hi, I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. If you Google these, you come up with all those companies that can sell you 1000 at a time, but I can't find any data to tell me what they are or an equivalent. Any help appreciated., thanks, Gareth. I think what your looking at is a MOV.. |
Identify these parts?
Jon Elson wrote:
The PTC thermistors are from Keystone Carbon Corp., I used these some years ago. Not sure they are in business anymore, but the line may have been picked up by one of the components manufacturers. I did find this : https://www.galco.com/buy/Keystone-C...Company/KC010L ** That pic looks exactly like a regular NTC thermistor. Mains voltage rated PTCs are used in the AC supply to PSUs, both transformer and switchmode to provide anti-surge PLUS overload protection. Impressive to see one doing its job, running stinking hot while allowing only 25mA or so into the faulty PSU. ..... Phil |
Identify these parts?
Phil Allison wrote:
Jon Elson wrote: The PTC thermistors are from Keystone Carbon Corp., I used these some years ago. Not sure they are in business anymore, but the line may have been picked up by one of the components manufacturers. I did find this : https://www.galco.com/buy/Keystone-C...Company/KC010L ** That pic looks exactly like a regular NTC thermistor. OOPs, that is indeed what I was thinking of, was NTC, not PTC, for inrush surge limiting. Jon |
Identify these parts?
wrote: On Tuesday, May 27, 2008 at 5:12:51 AM UTC-5, Gareth Magennis wrote: Hi, I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. If you Google these, you come up with all those companies that can sell you 1000 at a time, but I can't find any data to tell me what they are or an equivalent. I think what your looking at is a MOV.. You replied to a 17 year old message. |
Identify these parts?
On Tue, 21 Jul 2015, Michael A. Terrell wrote:
wrote: On Tuesday, May 27, 2008 at 5:12:51 AM UTC-5, Gareth Magennis wrote: Hi, I have 2 parts in a SMPS that I think are PTC thermistors. One is marked KC103P, the other KC221K, the first a blue disk looking just like this: http://uk.farnell.com/jsp/level5/mod...=en/207356.xml The second actually looks more like a huge blue tantalum cap, smaller than the first but fatter, not a disc. If you Google these, you come up with all those companies that can sell you 1000 at a time, but I can't find any data to tell me what they are or an equivalent. I think what your looking at is a MOV.. You replied to a 17 year old message. I've seen replies to older messages, but in this case, it's only been 7 years. 17 would have the original post in 1998. And in this case, I seem to have missed the original post, so yes, it's amusing to see the other replies, which clearly came because of the first post. It's often interesting to look at the original thread, because these old post resurrectors often don't. They think they have something to add, yet the original thread often covers the whole thing. Michael |
Identify these parts?
Michael Black wrote: On Tue, 21 Jul 2015, Michael A. Terrell wrote: You replied to a 17 year old message. I've seen replies to older messages, but in this case, it's only been 7 years. 17 would have the original post in 1998. You're right. I had seen a 16 year old message replied to on another group a few minutes earlier, and wasn't paying close attention. And in this case, I seem to have missed the original post, so yes, it's amusing to see the other replies, which clearly came because of the first post. It's often interesting to look at the original thread, because these old post resurrectors often don't. They think they have something to add, yet the original thread often covers the whole thing. Michael |
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