Identify an SMD component

From: Charles H. Dickman <chd_1_at_nktelco.net>
Date: Sun Aug 29 16:39:18 2004

I have two identical 72pin memory SIMMS out of an HP workstation. One is
damaged by having a single 3pin SMD component physically destroyed, with
only the leads remaining. The second is complete and functional. The
damaged component's reference designation is CR5, so I am thinking it is
a rectifier and not a transistor. The black plastic SOT-23 package is
marked with 5A followed by a K rotated 90deg counter-clockwise.

Any suggestions on how to identify the part? Is there a pointer
somewhere to how SMD components are marked?

-chuck
Received on Sun Aug 29 2004 - 16:39:18 BST