DI124 Zener diodes

Posted by: npatel on 08/17/2012

Hello,

The Di124.pdf page 2 says that "Zener Diodes VR1-VR3 can be replaced by a singleP6KE540", is that correct or is it P6KE440? VR1-VR3 on DI124 is 150V zener diodes, which makes 450V to limit drain voltage (it is mentioned on page 1), then how to use 540V diode? Plese clarify.

Thanks.

Comments

Datasheet of P6KE440 claims that the normal break down voltage is 440V, very close to 450V. As you know, LNK304 can handle 700V, so it should be no problem at all for P6KE440.

thanks for using PI part .

But I can not use P6KE540 as written in your Di124.pdf (Design Idea, page 2), right?

Thanks a lot for pointing it out.