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LucasJH  
#1 Posted : Wednesday, July 18, 2012 8:24:20 PM(UTC)
LucasJH

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Joined: 6/29/2012(UTC)
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United Kingdom
Location: Birmingham
Hi,

Is it possible to replace FJPF1943 with FJA4213? = which fairchild suggest as the replacement.
It is a package TO-3P which should just fit in the specified heatsinks and some careful pin bending.

http://www.fairchildsemi.com/ds/FJ/FJA4213.pdf.

Only ask because the FJPF1943 is difficult to get now/ outside US.
If not I will just wait until a big mouser order is required.


Best Regards,
Lucas, UK
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Russ White  
#2 Posted : Wednesday, July 18, 2012 11:21:01 PM(UTC)
Russ White

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Just about any good power transistor with the same pin-out will work fine. If it is an un-isolated type just be sure to use a proper isolator. Try to keep the HFE > ~80. The more the better.
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LucasJH  
#3 Posted : Thursday, July 19, 2012 9:44:14 AM(UTC)
LucasJH

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Location: Birmingham
OK fantastic.

Many Thanks
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