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about hFE multimeter test...

A

ArameFarpado

Jan 1, 1970
0
Hi all...

a transistor "BD435" is giving me 440 in hFE test on the multimeter, when
the tecnical data i've found tell me min=40 max=475...

does this mean the transistor is really in good shape?
can it be busted and still give a good hFE test result on the multimeter?

thanks
ArameFarpado
 
B

Baron

Jan 1, 1970
0
ArameFarpado said:
Hi all...

a transistor "BD435" is giving me 440 in hFE test on the multimeter,
when the tecnical data i've found tell me min=40 max=475...

does this mean the transistor is really in good shape?
can it be busted and still give a good hFE test result on the
multimeter?

thanks
ArameFarpado

It means it is within spec !
 
A

ArameFarpado

Jan 1, 1970
0
Em Sábado, 19 de Abril de 2008 20:18, Brian Gregory [UK] escreveu:
It depends how good the multimeter's Hfe function is. Agreed

Check that if you disconnect B and connect only C and E the meter shows
either a low number (ideally 0 or no more than 1 or 2) or an error of some
kind.
connecting just E and C in the socket, it reads the same value for hFE.
so, it got me thinking that hFE measure is not a transistor test for
working/burned transistor...

do you use hFE measure to see if a transistor is busted?

thanks
ArameFarpado
 
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