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Author Topic: Help with finding unknown driver transistor marked 4948 What is it?  (Read 1053 times)

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Offline tru3533Topic starter

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Help with finding unknown driver transistor marked 4948 What is it?
« on: October 25, 2018, 10:22:55 pm »
Hi,
I need help with finding an unknown driver transistor marked 4948 What is it?
Any idea?
Any help is highly appreciated, thank you.
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Offline JFJ

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Re: Help with finding unknown driver transistor marked 4948 What is it?
« Reply #1 on: October 25, 2018, 11:11:40 pm »
It might be a Vishay dual MOSFET: https://www.vishay.com/docs/72847/si4948be.pdf

The part markings are explained here: https://www.vishay.com/docs/72762/72762.pdf
« Last Edit: October 25, 2018, 11:19:09 pm by JFJ »
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Offline T3sl4co1l

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Re: Help with finding unknown driver transistor marked 4948 What is it?
« Reply #2 on: October 25, 2018, 11:14:16 pm »
Traces look like dual MOSFET.

Si4948 sounds like a winner.

Soldering on that connector is sketchy as hell...

Tim
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Offline tru3533Topic starter

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Re: Help with finding unknown driver transistor marked 4948 What is it?
« Reply #3 on: October 25, 2018, 11:40:41 pm »
Whow  :)
JFJ that was quick :)
For sure a winner. Thank you so much.

Tim
Luckily I had another board to compare, the FET was blown off the pcb.

PS soldering not by me :-)
« Last Edit: October 25, 2018, 11:47:19 pm by tru3533 »
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