what is this semi

gmphadte · 19th October 2006, 04:12 AM

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

kubeek · 19th October 2006, 12:29 PM

http://www.alldatasheet.com/datashee...AB/2N4112.html

jacco vermeulen · 19th October 2006, 12:48 PM

Original was made by PPC, former Kerton.

Elvee · 19th October 2006, 01:24 PM

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

jacco vermeulen · 19th October 2006, 01:55 PM

12 volt Zener diodes do not seem to have 3 leads.

Elvee · 19th October 2006, 02:28 PM

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

gmphadte · 20th October 2006, 03:51 AM

It is not a 2N4112. It's japanese in small plastic.

Gajanan Phadte

Chartal · 20th October 2006, 06:48 AM

Maybe this one.

Panasonic UN4112

Elvee · 20th October 2006, 07:08 AM

Quote:

Originally posted by Chartal
Maybe this one.

Panasonic UN4112

Looks more like it.

gmphadte · 20th October 2006, 08:37 AM

Quote:

Maybe this one.

Yes
Thanks Chartal and all others.

19th October 2006, 04:12 AM	#1
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	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

19th October 2006, 12:48 PM	#3
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	Original was made by PPC, former Kerton. __________________ Looks like Sponge Bob has killed another thread.

19th October 2006, 01:55 PM	#5
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	12 volt Zener diodes do not seem to have 3 leads. __________________ Looks like Sponge Bob has killed another thread.

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19th October 2006, 12:29 PM	#2
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	http://www.alldatasheet.com/datashee...AB/2N4112.html

19th October 2006, 01:24 PM	#4
Elvee diyAudio Member Join Date: Sep 2006	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

20th October 2006, 03:51 AM	#7
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	It is not a 2N4112. It's japanese in small plastic. Gajanan Phadte

20th October 2006, 06:48 AM	#8
Chartal diyAudio Member Join Date: Nov 2004 Location: Montreal	Maybe this one. Panasonic UN4112

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