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Bf64c replacement?

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Doomguy42

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Hi I have some transistors-*
Bf64c that is like to replace,
I found one equivalent but it seems it's obsolete too (bdt64c).
Does anyone know of anything new I can use? I'd like to replace a whole row of them.
 
Are you sure you have the correct number?

BF series were high-frequency transistors as far as I know, not darlington power as the supposed equivalent?
The numbers appear to start at around 100

Could it be a B followed by a number rather than an F, eg. a B164 or B464?

What style case is it, and what is it used in?
 
Hi, I think it's the Darlington power transistors I'm looking for... here's a picture.
I'm just wondering if there's a modern alternative I can buy in bulk.
 

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I agree with rjenkinsgb, it sounds more like a 2SBxxx type transistor (the 2S part is left off) - google doesn't find anything for a BF64C.

Can you post a picture of the original transistor?, also what does it do, and what is it in?.

Finding replacement transistors is more a case of finding one for the application, and not just trying to find a replacement from the numbers.
 
Thanks, sure here's one attached.

It's a power transistor to the larger voltages of a lamp matrix. I think you'd call it a multiplexer row...?

I also just seen BDW94C used in place of it in the same positions on another board. Hopefully thats correct as that's available, I might have answered my own question :/
 

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Yes agree... they do use alot of custom ic's marked up as BFM****
Thanks for the replies

Yes, looks like an in-house number, so completely meaningless.

I'd be inclined to test a working one, to confirm that it's PNP and indeed a darlington. If you've got a cheap Chinese component tester (and you should :D) it will tell you pretty well all you need to know. But even a multimeter will tell you if it's darlington and PNP.
 
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