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Old 19th October 2006, 04:12 AM   #1
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Default what is this semi

One of my friend's Sony stereo goes into output protection mode as DC offset is high.
He suspects N4112 is bad. He is not sure. Does anyone know what is this 3 lead device. More info, the better

Thanks in advance

Gajanan Phadte
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Old 19th October 2006, 12:29 PM   #2
kubeek is offline kubeek  Czech Republic
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http://www.alldatasheet.com/datashee...AB/2N4112.html
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Old 19th October 2006, 12:48 PM   #3
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Original was made by PPC, former Kerton.
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Old 19th October 2006, 01:24 PM   #4
Elvee is offline Elvee  Belgium
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Hi,

I doubt it could be a 2N4112: japanese makers very rarely use US or european components when they have a domestic alternative, which is certainly the case for the 2N4112.
What kind of case is it, plastic, metal? Is there a manufacturer logo or any other indication? Could also be a 12V voltage regulator.
LV
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Old 19th October 2006, 01:55 PM   #5
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12 volt Zener diodes do not seem to have 3 leads.
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Old 19th October 2006, 02:28 PM   #6
Elvee is offline Elvee  Belgium
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Quote:
Originally posted by jacco vermeulen
12 volt Zener diodes do not seem to have 3 leads.
http://www.national.com/ds/LM/LM340.pdf
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Old 20th October 2006, 03:51 AM   #7
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It is not a 2N4112. It's japanese in small plastic.

Gajanan Phadte
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Old 20th October 2006, 06:48 AM   #8
Chartal is offline Chartal  Canada
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Maybe this one.

Panasonic UN4112
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Old 20th October 2006, 07:08 AM   #9
Elvee is offline Elvee  Belgium
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Quote:
Originally posted by Chartal
Maybe this one.

Panasonic UN4112
Looks more like it.
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Old 20th October 2006, 08:37 AM   #10
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Quote:
Maybe this one.
Yes
Thanks Chartal and all others.
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