Zener diode colour code please - UK Vintage Radio Repair and Restoration Discussion Forum

RogerWalker · 20th Aug 2012, 2:50 pm

I have a quantity of diodes that have a grey body and a wide blue first band and a narrow red second band.
Short of setting up a PSU and test rig, can anyone please confirm what voltage zeners these are please? Logic says it is 6.2V but there doesn't seem to be a standard code. I have others that I can't identify - orange body with two yellow rings, some with an additional white band. A link to a definitive listing would be great!
Regards
Roger

julie_m · 20th Aug 2012, 3:26 pm

The colour codes on Zener diodes simply give a part number, which may or may not have the PIV embedded within it.

20th Aug 2012, 2:50 pm	#1
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Zener diode colour code please I have a quantity of diodes that have a grey body and a wide blue first band and a narrow red second band. Short of setting up a PSU and test rig, can anyone please confirm what voltage zeners these are please? Logic says it is 6.2V but there doesn't seem to be a standard code. I have others that I can't identify - orange body with two yellow rings, some with an additional white band. A link to a definitive listing would be great! Regards Roger

20th Aug 2012, 3:26 pm	#2
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Zener diode colour code please The colour codes on Zener diodes simply give a part number, which may or may not have the PIV embedded within it. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.