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Author Topic: Help in identifying the component  (Read 1308 times)
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sam_des
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« on: August 05, 2021, 06:14:14 18:14 »

Hi,

Can anyone identify the component? Local vendor is saying that this is TL431. But I can't find any reference to it so far.

Thanks in advance,
sam_des
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pickit2
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« Reply #1 on: August 05, 2021, 06:43:28 18:43 »

Question what is the history?
part taken of a pcb?
or what?
Marking don't look like a Texas TLxxx  device would expect image to be sharper.
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sam_des
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« Reply #2 on: August 05, 2021, 08:05:51 20:05 »

Its from a cut-reel of 2000, but Unfortunately no original manufacturer labels. Vendor says its Lite-On Semiconductor which is actually Diodes Inc. But again TL431s from Diodes Inc has different markings.
I tried ST, NXP, Texas, On Semi, but no luck.
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« Reply #3 on: August 05, 2021, 08:14:46 20:14 »

what does a diode reading on your meter say?
would tell you if diode or transistor.

Best investment I made last year was this from E-Bay
search  lcr-tc1 transistor tester   
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« Reply #4 on: August 05, 2021, 08:20:02 20:20 »

Yes, have asked for samples and going to get a few tomorrow.
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Sideshow Bob
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« Reply #5 on: August 06, 2021, 08:43:42 08:43 »

I read the markings as OCA 6A. Could not find anything related to TL431. As you said if you test it and it works as Tl431 it should be OK.
Edit. The Markings could be off. Because if you place a large enough order. You can have your own codes printed on the components. Very often surplus from such a batch find their way into the more open marked via many different channels 
« Last Edit: August 06, 2021, 11:43:36 11:43 by Sideshow Bob » Logged

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BharatSujanani
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« Reply #6 on: August 14, 2021, 09:56:41 09:56 »


Please check this list if some is match with your device.
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Bharat Sujanani
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