What is this chip?

W

Wayne.

Guest
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." <abuse@hotmail.com> put
finger to keyboard and composed:

All it has written on it is:
- FC (this I think is the manufacturer,
- 9501
- K3303
Click to expand...
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.

It was pulled out of an old ATX PSU and had a heat sink of 4"x5" steal
plate all to itself.
Click to expand...
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
 
Wayne. wrote:
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.
Click to expand...
Why not ?

geoff
 
Franc Zabkar wrote:
On Tue, 28 Apr 2009 16:14:51 +1000, "Wayne." <abuse@hotmail.com> put
finger to keyboard and composed:

All it has written on it is:
- FC (this I think is the manufacturer,
- 9501
- K3303

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.

It was pulled out of an old ATX PSU and had a heat sink of 4"x5" steal
plate all to itself.

- Franc Zabkar
Click to expand...
Thanks for that.
 
geoff wrote:
Wayne. wrote:
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.

Why not ?

geoff
Click to expand...
K330 is also a prefix for other 3 pin chips that are not FETs.
 
"Wayne." wrote:

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.
Click to expand...
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
 
Wayne. wrote:
geoff wrote:
Wayne. wrote:
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.

Why not ?

geoff



K330 is also a prefix for other 3 pin chips that are not FETs.
Click to expand...
In which case they would have last numbers other than "3" !

Unless they printed K3303 on it just to trick people....

geoff
 
"Wayne." wrote:

geoff wrote:
Wayne. wrote:
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.

K330 is also a prefix for other 3 pin chips that are not FETs.
Click to expand...
It's clearly a power mosfet.

Graham
 
"Wayne."
All it has written on it is:
- FC (this I think is the manufacturer,
- 9501
- K3303
Click to expand...

** Makers nearly always put their logos on devices - if there is room.

Very useful to know the various logos, to narrow down your search.

http://www.classiccmp.org/rtellason/logos/semiconductorlogos.html



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.
Click to expand...

** The heatsink proves the device is handling lots of power and the 3 legs
means it is a transistor or a FET.

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
 
Phil Allison wrote:

"Wayne."

All it has written on it is:
- FC (this I think is the manufacturer,
- 9501
- K3303

** Makers nearly always put their logos on devices - if there is room.

Very useful to know the various logos, to narrow down your search.

http://www.classiccmp.org/rtellason/logos/semiconductorlogos.html

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.

** The heatsink proves the device is handling lots of power and the 3 legs
means it is a transistor or a FET.

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.
Click to expand...
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
 
Eeyore wrote:
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
Click to expand...
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
 
Wayne. wrote:
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.
Click to expand...
 
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