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What's the difference c639 and bc639 Transistor

W

Web Master

Jan 1, 1970
0
Went to buy a bc639 transistor but was given a c639 is this the same thing ?
 
J

Joe McElvenney

Jan 1, 1970
0
Hi,
Went to buy a bc639 transistor but was given a c639 is this the same thing ?

Maybe NOT!

What is the can style of the C639? If it's TO-18 then it is probably
a 2SC639 which is quite different to the BC639 (TO-92). It has a lower
collector voltage and power rating but a much higher fT (375MHz).
The connections are in a different arrangement/order to boot.


Cheers - Joe
 
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