[Milsurplus] Re: When did they start Date Coding Parts?

[Hue Miller]

----- Original Message ----- 

> i am an old components engineer so i like stuff like this.
> What is the oldest part you have with a clear date code?
> i found some transistors:
> 2N128  6035
> 2N168  5941
> 1N538  6043
> 
> Paul  w0rw

German vacuum tubes have week + year date code.
Japanese vacuum tubes had month + year date code.
This in WW2.
Correct as far as i know.
-Hue Miller