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Author Topic: 822 or 951?  (Read 3674 times)

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Offline timelessbeingTopic starter

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822 or 951?
« on: July 03, 2012, 10:35:09 pm »
Hi guys. I need help identifying this transistor please. Also, what do the colour stripes signify?
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Offline muvideo

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Re: 822 or 951?
« Reply #1 on: July 03, 2012, 10:52:43 pm »
TO92 package, could be ZTX951,PNP transistor, but it doesnt seem a flat zetex package,
google also returns an obscure NTE951 15V 100mA regulator,
did you try to check the terminals with a multimeter in diode test mode?
Or using a transistor tester of you have one?

Fabio.
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Fabio Eboli.
 

Offline timelessbeingTopic starter

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Re: 822 or 951?
« Reply #2 on: July 03, 2012, 11:28:31 pm »
Yes I just tested it, and the multimeter thinks it's an NPN with gain of 260.
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Offline T4P

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Re: 822 or 951?
« Reply #3 on: July 04, 2012, 03:28:14 am »
It's a NatSemi(the old logo) part ...
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Offline codeboy2k

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Re: 822 or 951?
« Reply #4 on: July 04, 2012, 03:48:32 am »
Quote from: DaveXRT on July 04, 2012, 03:28:14 am
It's a NatSemi(the old logo) part ...
This is their new logo.



After the merger, TI seems hell bent on wiping the NatSemi brand off the planet.
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Offline T4P

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Re: 822 or 951?
« Reply #5 on: July 04, 2012, 09:01:02 am »
TI really is ...
First they did that 'TI Remembers Bob Pease' ... WTF

Anyway, i still go for TI for their parts because they are the first one to come up with an part reference android app
NXP came later then ST came only with opamps.
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Offline Rerouter

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Re: 822 or 951?
« Reply #6 on: July 04, 2012, 09:03:56 am »
i believe the stripes where from internal component testing when the item was made, 2 bits of my test gear have the same, (even some tanatlums re-dipped with another colour)
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Offline amyk

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Re: 822 or 951?
« Reply #7 on: July 04, 2012, 09:28:22 am »
2SC951? That matches being TO-92 and NPN.

Supposedly equivalent to NTE123AP.
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Offline timelessbeingTopic starter

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Re: 822 or 951?
« Reply #8 on: July 04, 2012, 08:19:30 pm »
National Semiconductor was a US company wasn't it? I thought 2SC is a Japanese naming convention.
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Offline T4P

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Re: 822 or 951?
« Reply #9 on: July 05, 2012, 02:04:32 am »
Must have been ZTX951 then, it's gain is also around 300hFE max but it's a PNP
Is it NPN or PNP?
But then again judging by the age ... probably isn't even similar to the ZTX951
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Offline timelessbeingTopic starter

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Re: 822 or 951?
« Reply #10 on: July 05, 2012, 08:51:47 pm »
Quote from: timelessbeing on July 03, 2012, 11:28:31 pm
Yes I just tested it, and the multimeter thinks it's an NPN with gain of 260.
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