Can BC548 be replaced by 2N3906 and 2N3904?

[James W]

I'm designing a circuit that requires BC548, and the circuit is for amplification purpose. Can I replace it with 2N3906 and 2N3904?

 

[Bluejets]

I'm designing a circuit that requires BC548, and the circuit is for amplification purpose. Can I replace it with 2N3906 and 2N3904?

Best show the circuit.

 

[Martaine2005]

The 548, 3904 are general purpose NPN transistors. The 3906 is PNP.The first two can be inter changed.
I think the BC series are common across the pond and 2N are Europe. I could be wrong though.

EDIT: The 548 is 100mA, 30V. The 3904 is 200mA, 40V. So compatible within the specs.

Martin

 

[Hunter64]

AC, BC, BF is european. 2N is US, 2SA,SB,SC,SD is Japanese.

 

[bertus]

Hello,

Here is an extended list of semiconductor coding as @Hunter64 shortly explained:
https://www.qsl.net/yo5ofh/doc/transistor_codes.htm

Bertus

 

[James W]

Hello,

Here is an extended list of semiconductor coding as @Hunter64 shortly explained:
https://www.qsl.net/yo5ofh/doc/transistor_codes.htm

Bertus

Thanks for the information

 

[James W]

The 548, 3904 are general purpose NPN transistors. The 3906 is PNP.The first two can be inter changed.
I think the BC series are common across the pond and 2N are Europe. I could be wrong though.

EDIT: The 548 is 100mA, 30V. The 3904 is 200mA, 40V. So compatible within the specs.

Martin

Thank you!! So BC548 can be replaced by 2N3904 but not 3906

 

[bertus]

Hello,

Here is a transistor table with some basic values.

Bertus

 

[Martaine2005]

So BC548 can be replaced by 2N3904 but not 3906

Yes, that is correct.

Martin

 

[bertus]

Hello,

The BC558 (PNP) is complementairy with the BC548 (NPN).
The 2N3906 (PNP) is complamentairy with the 2N3904 (NPN).
The BC558 could be replaced with a 2N3906 as both are PNP.

Bertus

 

[WHONOES]

I think the BC prefix was initiated by Mullard.

 

[Martaine2005]

I think the BC prefix was initiated by Mullard.

I think that BC came before AD

 

[Audioguru]

The sequence of pins in a BC548 is CBE but the pins of a 2N3904 are EBC.

 

[bertus]

Hello,

Before the BC there was the AC.
The B = Silicium
The A = Germanium.
See also the link I posted before.

Bertus

 

[Martaine2005]

The sequence of pins in a BC548 is CBE but the pins of a 2N3904 are EBC

That's simple enough to put them in backwards. Then it's correct.

Martin