F1 questions

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eyoung

eyoung

Member
Joined 2007
AS I am lingering behind most of you, I am endevoring to build an F1. The questions are can I sub BC557 Or 2N5501 for ZTX550 and IRFP640 for non essential IRFP240????Or all of them for that matter Knowing that they do not dissapate heat as well as the IRFP240.

Thanks for your replies, Elwood
 
Gyuri

Gyuri

Member
Joined 2003
Dear my friend, I try to answer for you.
As if I would have read it many times, the ZTX550 not critic, its substitution is easy.
Nelson diverted a truckful of quantity presumably the ZTX, uses it because of that. A pleasant one is a transistor otherwise.
I can judge it, it irfp240 and it irfp640 only the package the difference. According to me if you do not exceed the 25 watt dissipation you may not have problem with it.

Gyuri
 
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