Replacing old Motorola Zeners

[tryppyr]

I have two types of zeners I need to replace.
Motorola 02 02 43
Motorola 02 00 41

I'm pretty sure the Motorola 02 00 25 is a 10V 1/2w Zener. What are the other two?

 

[shrtrnd]

Sounds like proprietary (in-house) numbering system to me.

 

[tryppyr]

Probably so. I think I've come up with a plan, though. I'll check the zeners on other boards and see if I can find one matching the number on the mystery zener, then look it up on the parts list. That ought to give me a clue.

 

[shrtrnd]

Or, if you find a good diode, you can set-up a test circuit, and determine the zener
voltage from that one for each of your unknown diodes.