Looking for Power Mosfet

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news - 27 Feb 2005 06:03 GMT

I've got a gigabyte motherboard (GA-7BAXP) that has suffered a blow out due
to capacitor leakage. The power mosfet I'm looking for is marked 70N03S.
I've determined that it was made by Intersil/Fairchild and it's part number
is RF1S70N03SM. It is in a TO220AB casing i.e. the drain is soldered to the
motherboard. Anyone have an idea where I can source 4-5 of these here in
Australia, Sydney.

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Phil Allison - 27 Feb 2005 09:34 GMT

"news"

> I've got a gigabyte motherboard (GA-7BAXP) that has suffered a blow out
> due to capacitor leakage. The power mosfet I'm looking for is marked
> 70N03S. I've determined that it was made by Intersil/Fairchild and it's
> part number is RF1S70N03SM. It is in a TO220AB casing i.e. the drain is
> soldered to the motherboard. Anyone have an idea where I can source 4-5
> of these here in Australia, Sydney.

** If the device is really in a TO220 pack - then the number is RFP70N03

Farnell in One sell them - cat. # 291 - 584 for $11.34 +

The RF1S...... number refers to a TO 262 pack - where the tab has been
shaved off.

See:
http://www.datasheetcatalog.com/datasheets_pdf/R/F/1/S/RF1S70N03.shtml

................ Phil

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news - 27 Feb 2005 09:51 GMT

Great..
You are right it's in a TO263AB. I suppose I can use the TO220 and hack off
the tab.
Thanks

> "news"
>>
[quoted text clipped - 16 lines]
>
> ................ Phil

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Phil Allison - 27 Feb 2005 10:01 GMT

"news"

> Great..
> You are right it's in a TO263AB. I suppose I can use the TO220 and hack
> off the tab.
> Thanks

** With a delicate touch - pleeeeeasssse.

Put the tab in a vyce, very tightly, leaving just enough exposed for a
*new* hacksaw blade to access.

Clean up with a small file.

BTW

A TO263 is smaller and has mini version legs compared to a TO220.

........... Phil

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Ed () - 28 Feb 2005 10:20 GMT

try gigabyte in tiawan
they may offer you a job as well
as the service here is sh.t

: I've got a gigabyte motherboard (GA-7BAXP) that has suffered a blow out due
: to capacitor leakage. The power mosfet I'm looking for is marked 70N03S.
: I've determined that it was made by Intersil/Fairchild and it's part number
: is RF1S70N03SM. It is in a TO220AB casing i.e. the drain is soldered to the
: motherboard. Anyone have an idea where I can source 4-5 of these here in
: Australia, Sydney.

Reply to this Message

Electronics Forum / Electronics / February 2005

Looking for Power Mosfet