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parallel high current diodes

J

Jamie Morken

Jan 1, 1970
0
Hi,

For a rectifier rated at 200V and 70Amps RMS current, is it possible to
parallel multiple diodes (ie two 200V 35Amp diodes) if small series
resistors are used on each diode to help balance the current as well as
mounting to the same heatsink to have close temperatures?

Also some TO-220 and TO-247 packages have two diodes, is it safer to
parallel these since they will be similar in structure and have very
close temperatures?

I would like to be able to use standard throughhole parts rather than
stud mount diodes, but 200V and 70Amps seems to be pushing it for
TO-220 and TO-247 package diodes.

cheers,
Jamie
 
J

Jamie Morken

Jan 1, 1970
0
Terry said:
I just sent you a couple of ST app notes :)

Thanks Terry :) AN599 makes it look like not such a bad idea to
parallel diodes, especially if they are in the same package.

cheers,
Jamie
 
J

Jamie Morken

Jan 1, 1970
0
sycochkn said:
RURG series doides from Fairchild Semiconductor up to 120 amps. TO247 case.

Thanks, digikey has the RURG80600 (80Amps 600V) and several others but
wasn't able to find the 120Amp one at digikey or fairchildsemi.com

cheers,
Jamie
 
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