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Old 15th Mar 2019, 8:39 pm   #1
poppydog
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Default JRC A612 transistor

Does anybody know what this transistor is used for? I have a few of these, they came in a job lot of components that I acquired recently, it appears to be silicon according to the tester result.

JRC A612 21X is whats written on it, JRC- radio company Japan? and has a green dot on top, some of the Japanese radios I have have coloured dots on the tops of the transistors but I don’t recall seeing a green dot on any of them.

Regards
Poppydog
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Old 15th Mar 2019, 8:48 pm   #2
G6Tanuki
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Default Re: JRC A612 transistor

2N612?

https://english.electronica-pt.com/c...ence?ref=2N612
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Old 15th Mar 2019, 8:50 pm   #3
ms660
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Default Re: JRC A612 transistor

2S....A612 (2SA612)

Lawrence.

Last edited by ms660; 15th Mar 2019 at 8:55 pm. Reason: clarification
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Old 15th Mar 2019, 8:51 pm   #4
poppydog
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Default Re: JRC A612 transistor

Quote:
Originally Posted by G6Tanuki View Post
Is the 2N612 not Ge?
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Old 15th Mar 2019, 8:54 pm   #5
paulsherwin
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Default Re: JRC A612 transistor

Quote:
Originally Posted by ms660 View Post
2S....A612.
That would be my guess too. Japanese transistors are often marked without the 2S prefix.

You can probably use them as general purpose PNP transistors, replacing things like BC158s.
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Old 15th Mar 2019, 8:56 pm   #6
Philips210
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Default Re: JRC A612 transistor

Hi

I think it may be a 2SA 612. As is often the case with Japanese transistors, the 2S is often omitted from the device markings.

Regards,
Symon

EDIT: post crossed with Paul's.
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Old 15th Mar 2019, 8:59 pm   #7
poppydog
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Default Re: JRC A612 transistor

Ignore my previous post That's the one, thanks very much.
Regards poppydog
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