Amp fixing question

MitchZ
10+ year member

Senior VIP Member
I bought my amp to a local repair shop, the guy tested all the transistors and told me which ones I need to order. (because his supplier doesn't carry these certain transistors)

I need these:

fb31n20d x 6

irf3205 x 4

I've been looking around and seeing lots of IRF3205PBF and IRFB31N20DPBF or other letter combinations after the actual one I need.

Will any of them work or do I need the exact part number?

I haven't looked very long, I just came across this.

 
irf3205 is obsolete. nte2991 is a replacement according to mouser.com theres a cheaper STMicro chip available too just search for "irf3205".

quick search didn't pull up anything for the other one. what kind of amp is it?

 
irf3205 is obsolete. nte2991 is a replacement according to mouser.com theres a cheaper STMicro chip available too just search for "irf3205".
quick search didn't pull up anything for the other one. what kind of amp is it?
Its a Viper 2500D

Im looking at these:

http://cgi.ebay.com/IRFB31N20DPBF-FB31N20D_W0QQitemZ300201586843QQcmdZViewItem?_trksid=p3286.m20.l1116

It says the correct part number and the correct part number with PBF on the end.

Will it be okay?//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 
Yes it "should" work. Don't know if they ship to canada but

"http://www.newark.com/57J2554/semiconductors-prototyping/product.us0?sku=INTERNATIONAL-RECTIFIER-IRFB31N20DPBF"

is cheaper. I believe the PBF on the end means lead free so that it is RoHS compliant.

 
on a side note. I'm not sure how much you are paying for this repair but unless it is really cheap. I would take my business elsewhere. IMO finding and ordering parts should NOT be the customers responsibility.

 
on a side note. I'm not sure how much you are paying for this repair but unless it is really cheap. I would take my business elsewhere. IMO finding and ordering parts should NOT be the customers responsibility.
Yeah, hes just charging me 60$ for labour. (To test everything and solder transistors)

I don't think its that bad...

I was quoted 300$ somewhere else.

So this way it will only be 100$ to 120$

 
Ok so I ordered the transistors.

Turns out to be 62$ shipped for all of them.

Thanks to everyone who helped in this thread. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 
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