All it has written on it is:
- FC (this I think is the manufacturer,
- 9501
- K3303
Using datasheetcatalogue.com and K330, it returns a number of FETs (K3301, 02, 04, 05), but I do not want to assume that this is what the chip is for.
It was pulled out of an old ATX PSU and had a heat sink of 4"x5" steal plate all to itself.
I have tried google, but it has only return street addresses, phone numbers, and other unrelated links.
On Tue, 28 Apr 2009 16:14:51 +1000, "Wayne." put finger to keyboard and composed:
Could it be a 2SK3303 MOSFET? Its manufacturer is identified as "Fuji" by usbid.com.
"9501" could be a YYWW date code.
I'm assuming it has 3 pins.
- Franc Zabkar
Why not ?
geoff
Thanks for that.
K330 is also a prefix for other 3 pin chips that are not FETs.
Big give-away. 2SK3303 presumably. The Japs regularly don't print the "2S" part of the device number.
Looks to be obsolete but stock is available.
Graham
In which case they would have last numbers other than "3" !
Unless they printed K3303 on it just to trick people....
geoff
It's clearly a power mosfet.
Graham
"Wayne."
** Makers nearly always put their logos on devices - if there is room.Very useful to know the various logos, to narrow down your search.
The K prefix ( abbreviation of 2SK...) in the number indicates it can logically only be a power FET.
All power FETs have a diode between source and drain pins - so you can tests for this, and the gate pin should be open with respect to the other pins.
...... Phil
Nice little test for mosfets to see if they might still be working. Assuming N-channel as in this case charge the gate positive w.r.t. source with your meter ( it's an enhancement mode Mosfet ) and the device should conduct. Charge the gate negative and it should not conduct ( except for the inverse diode of course ).
Graham
Or stick it on a PEAK 3-terminal semiconductor tester and it will check the component type, all the vital signs, pin identification, and characteristics .
.... if for some reason you disbelieve the printed legending.
geoff
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