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Family Computer => Technical & Repair Assistance => Topic started by: ericj on September 17, 2011, 08:58:47 pm

Title: Help ID this SMD component
Post by: ericj on September 17, 2011, 08:58:47 pm
I'm hoping someone can help identify this SMD component (marked as C3 2G). It's marked as D12 & D13 on the PCB. Thanks!   :)

(http://i275.photobucket.com/albums/jj287/pingaloquita/IMG_4839.jpg)
Title: Re: Help ID this SMD component
Post by: Drakon on October 02, 2011, 08:22:13 am
look like transistors to me since they have 3 pins...I could be wrong though
Title: Re: Help ID this SMD component
Post by: cmv2 on October 07, 2011, 03:03:20 pm
R resistors?
D Darlington component?
Title: Re: Help ID this SMD component
Post by: jpx72 on October 12, 2011, 05:21:52 am
C3 2G - those are RF Schottky Barrier Diodes type HSMS-2823 :D
Search for datasheet on "HSMS-2823"
Title: Re: Help ID this SMD component
Post by: ericj on October 12, 2011, 06:57:49 am
Thanks jpx72! I figured they were diodes based on how the PCB was marked, but how the hell did you figure that out?  :question:
Title: Re: Help ID this SMD component
Post by: jpx72 on October 12, 2011, 12:42:36 pm
Well as you said, it's marked as Dxx so that was my first clue on diode, and secondly check SMD codebook:
http://elektronik.googlecode.com/files/SMD_Catalog222.pdf (3MB !)
on page 37 are four "C3" components and only one of them is diode - dual HP2835 schottky :)
(yep I got some clues from my father, he's an old electrician :D Thanks Dad! )
Title: Re: Help ID this SMD component
Post by: ericj on October 12, 2011, 12:51:01 pm
Nice detective work!  :fire:

I hate SMD stuff--not only because it is incredibly frustrating to solder with a conventional iron, but because figuring out what some of the components are is very difficult.
Title: Re: Help ID this SMD component
Post by: Xious on October 27, 2011, 06:44:18 pm
If you're going to do SMD work, you really should consider buying a basic reflow station. These are very affordable today, and make SMD repairs (or construction) very simple. :bomb: