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transistor equivalent

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colinmarais

New Member
I am building a small radio and need a MPF 102 FET transistor. Can anyone please indicate which of the following might work:
1. C945P1960
2. BC557A
3. TL 431 CLP 8343
4. E2 N2222 470
5. BF 199 CEB
6. 2N 3819
7. BC 547B V7 E
8. 2N 3904 H32
:confused:
 

Hero999

Banned
You tell us.

Look at the datasheets (these can be found using Google) and compare them to the MPF102.

Hint: you need an n-channel jugfet ,nothing elese will do, an NPN transistor won't work and neither will a voltage reference.
 

colinmarais

New Member
tried it. the radio is as dead as a doornail. Then again, I am terrible in this. wil update if managed to get it right. Thanks everyone!
 

audioguru

Well-Known Member
Most Helpful Member
The schematic for the Radio Shack Special regenerative "radio" that you are building shows that either an MPF102 or a 2N3819 FET can be used. An error in the parts list does not list the FET.

If you compare their datasheets then you will see that the pins are in a different sequence.
 

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