Page 1 of 1

SF302 Replacement!!

Posted: Thu Sep 05, 2013 11:17 pm
by mndevil
Hi,

New member from Indonesia.
I am looking for SF302 replacement for my MPS2240.
If anybody know the replacement part, please let me know.

Here is the pic

Image


Thanks before

Cheers

Re: SF302 Replacement!!

Posted: Sat Sep 07, 2013 2:51 pm
by trickyricky
Could you post a pic of the component you need help with? Am looking at my MS275 (which are similar/same) and can't find any component labeled "SF".

Re: SF302 Replacement!!

Posted: Sun Sep 08, 2013 1:12 am
by zeropoint0.5
trickyricky wrote:Could you post a pic of the component you need help with? Am looking at my MS275 (which are similar/same) and can't find any component labeled "SF".
it is one of the big transistors at the side mounted on the heatsink.....

Re: SF302 Replacement!!

Posted: Sun Sep 08, 2013 4:35 am
by Mr. Wild
SF302 and SF302A are rectifiers in the power supply section, not transistors.

Re: SF302 Replacement!!

Posted: Sun Sep 08, 2013 7:54 am
by trickyricky
On the MS275 they are the TO-247 package and are 16CPF10 & 16JPF10. On mine they are labeled as "D8" & "D9".

The only problem is that mine is a MS275 so its not a "HIGH CURRENT" amp like the MPS. The MPS have rectifiers that handle double the current...so be sure to check the datasheets before ordering. If anything order the same exact components.

Re: SF302 Replacement!!

Posted: Sun Sep 08, 2013 9:34 am
by zeropoint0.5
Mr. Wild wrote:SF302 and SF302A are rectifiers in the power supply section, not transistors.
yes you are right. thank you for correcting me........ :oops: :oops: :oops: :oops: :oops:

Re: SF302 Replacement!!

Posted: Fri Sep 13, 2013 6:51 am
by mndevil
Thanks trickyricky for the tips!! :) :) :)

Re: SF302 Replacement!!

Posted: Sat Sep 14, 2013 6:45 am
by Eric D
I know this does not answer the question, but are you sure the SF302 and SF302A are actually bad? I have not found these to go bad very often. They are very powerful diodes.

Yes, they can and do go bad, they just seem to be one of the last parts to go bad.

Re: SF302 Replacement!!

Posted: Sat Sep 14, 2013 7:00 am
by mndevil
Actually it's not bad at first, but when I bought the amp locally, the seller promised me to change the caps to a new one, but do not know what happen, the seller repairman break one pin, so I immediately asked him to send the amp to me before anything else happen