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Who knows the part number and the vendor of this BJT? - RF Cafe
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Post subject: Who knows the part number and the vendor of
Unread postPosted: Tue Jan 18, 2005 6:58 pm
can anybody know the part number and the vendor of the following
1. SOT23 package, NPN type, with the characters "ADQ57"
on the back;
2. SOT23 package, PNP, with the characters "HB"
on the back;
Unread postPosted: Wed Jan 19, 2005 12:06 am
Joined: Sun Aug 03,
2003 2:02 pm
Location: Erie, PA
I can't be certain
without doing more research, but here is a good start for you.
2. Likely Siemens (noe Infineon) since marking is similar to this
1. The AD listing here has a BCY-58 SOT23 package by Philips:
You might be able to do a Google Search on "ic package markings"
or a similar string to find your part. Good luck.