I need help with another component ID

Thread Starter

Gdrumm

Joined Aug 29, 2008
684
The power board of a Dell 1504FP computer monitor will not power on.
The Caps look good, but this component had green and brown crud across 2 pins (middle and right side).

I looked in my 2 books, and believe it's a Motorola part.
Numbers are:
NL237
MTP
2955V

Board says 01, then below pins holes, S D G, with a broad line above that.

Things it might be (they all look alike to me)?
Schttky Diode
SCR
Triac
Mosfet
Zener Regulator
Fast Diode
Transistor
N and P Channel Hexfet

Once identified, how do I test it?
Center pin is ground (checking continuity)
It does not mount to a heat sink.

I have a Digi Key 2011 book, but man I sure don't know how to use it.

Thanks,
Gary
 

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shortbus

Joined Sep 30, 2009
8,051
To me, "S D G, with a broad line above that", means it's a Mosfet.

S = source
D = drain
G = gate
And the broad line shows where the tab goes.

But I have been known to be wrong.:)
 

Thread Starter

Gdrumm

Joined Aug 29, 2008
684
Happy to report I had a Mosfet in a box of salvaged components.
Soldered it in, put it back together, and it works great.

Thanks for your help.
Another lesson worth some money.

Gary
 
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