In article . com,
gk wrote:

This is my first time posting, so I apologize ahead of time for any
breach in netiquette.

Can anyone please help me find out what this component is? It shorted
out (water spill) on a Dell Inspiron 5100 laptop motherboard. It is an
8-pin package and the markings a

2042A
36T
DCFR

Texas Instruments logo. A wildcard search (*2042a*) at
www.datasheetarchive.com turns up the TI TPS2042A, described as
"0.7A, 2.7-5.5V Dual (1In/2Out) Hi-Side MOSFET, Fault Report, Act-Low
Enable." The data sheet for that part, downloaded via the link
provided, describes it as a "current-limited power distribution
switch" and shows that it does come in an 8-pin package which
resembles the one in your picture. So, I sorta figure that's what you
have there. Must have made a nice BANG when the leg came off :-(

This is apparently an obsolete part - none of the usual distributors
such as DigiKey or Mouser have any in stock, and (apparently) neither
does TI.

TI lists it as having been superceded by an "exact replacement", the
TPS2042B. Digi-Key has the TPS2042BDR in stock for $1.68 each.

That's likely your best bet, I think.

--
Dave Platt AE6EO
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