Author Topic: Semiconductor codes (Read 9945 times)

Turnip · « **on:** October 17, 2011,09:37:37 »

Hi folks,

Got what looks like a standard NPN SM transistor coded W1A - any idea what it is ? Thanks - Chris.

Mulja tv repair portal · « **on:** October 17, 2011,09:37:37 »

AGC · « **Reply #1 on:** October 17, 2011,11:03:50 »

Hi
You no show type case.It is very significant.
Usually index W- made in China.

Turnip · « **Reply #2 on:** October 17, 2011,11:31:18 »

Hi AGC and thanks,

What you suggest accounts for my problem - will attach a picture - Semi in question Q28

Many thanks - Chris.

Mulja tv repair portal · « **Reply #2 on:** October 17, 2011,11:31:18 »

Keith · « **Reply #3 on:** October 18, 2011,04:44:30 »

Hi Chris,

If the one next to it measures like an NPN you could try a general purpose BC846 or BC847.

Keith

Turnip · « **Reply #4 on:** October 18, 2011,07:49:36 »

Hi Keith and thanks,

Gather it's equivalent to 2N3904 - thanks again - Chris.

AGC · « **Reply #5 on:** October 18, 2011,11:23:19 »

Look this site, it convenient for search.
http://www.ecadata.de/suchneu/such.php?F_SPRACHE=2&DATASHEET=casenorm&F_JEDEC=all&F_SEARCHFOR=JEDEC&PATH=/ddv/jedeccreatelist.php
Example for you transistor with marking W1A:
http://www.ecadata.de/suchneu/such.php?F_SPRACHE=2&DATASHEET=casenorm&F_JEDEC=all&F_SEARCHFOR=JEDEC&PATH=/ddv/jedeccreatelist.php

Mulja tv repair portal · « **Reply #5 on:** October 18, 2011,11:23:19 »

AGC · « **Reply #6 on:** October 18, 2011,11:34:01 »

Not correct second address.
Need mark in sector "SMD-Code".

Keith · « **Reply #7 on:** October 20, 2011,03:50:33 »

Hi Chris

2N3904 isn't smd, I'd try a BC846, and stand back :)

Keith

Turnip · « **Reply #8 on:** October 22, 2011,12:58:59 »

Hi Keith,

You're right of course, could have been a 2N3904U (SMD) admit wasn't my problem transistor but for a Quuq chap with Megmeet MLT668 troubles - now well sorted - we hope - Chris

Mulja tv repair portal · « **Reply #8 on:** October 22, 2011,12:58:59 »

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