Am about ready to order my fets and found this on Fairchild's site...
http://www.fairchildsemi.com/pf/IR/IRFP244B.html
Would these be better or worse than standard IRFP244's? Anyone know what the difference is in the "B" model?
Also, does anyone know of a reasonable source for IRF244's in TO3 cases? The vendors that I've tried all want ~$7.50 each for these. I'm figuring that I'll have to buy ~300 to end up with 4 sets of 16 and 4 sets of 12 that are matched...
I really wanted to use the TO3 style devices because the "scrap" metal that I have is already drilled for them but the pricing is just brutal!!!
Any chance Pass Labs would consider selling 112 devices that are matched?
Help!
Thanks
http://www.fairchildsemi.com/pf/IR/IRFP244B.html
Would these be better or worse than standard IRFP244's? Anyone know what the difference is in the "B" model?
Also, does anyone know of a reasonable source for IRF244's in TO3 cases? The vendors that I've tried all want ~$7.50 each for these. I'm figuring that I'll have to buy ~300 to end up with 4 sets of 16 and 4 sets of 12 that are matched...
I really wanted to use the TO3 style devices because the "scrap" metal that I have is already drilled for them but the pricing is just brutal!!!
Any chance Pass Labs would consider selling 112 devices that are matched?
Help!
Thanks
BrianGT said:TO-3P is a good deal bigger then the TO-247AC
Brian
I fear that is not quite correct:
TO3P:
15,6 x 19,9 x 4,8 mm
TO247:
15,9 x 20,3 x 4,7-5,1 mm
Uli
uli said:
I fear that is not quite correct:
TO3P:
15,6 x 19,9 x 4,8 mm
TO247:
15,9 x 20,3 x 4,7-5,1 mm
Uli
Well, I guess it depends on the part. I have some MJL1302A/3281 devices, which were classified as TO-3P, and they are a good deal larger then my IRFP240 TO-247AC devices.
--
Brian
cases
Hi Brian,
there are some different versions of TO3P(+suffix) on the
market but the above dimension data is true for IRFP250
by IR and IRF250B by Fairchild.
You can consider them to be nearly identical except the
mounting hole which is isolated from drain at TO247!
Uli
Hi Brian,
there are some different versions of TO3P(+suffix) on the
market but the above dimension data is true for IRFP250
by IR and IRF250B by Fairchild.
You can consider them to be nearly identical except the
mounting hole which is isolated from drain at TO247!
Uli
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