[Boatanchors] Diode color coding

[J. Forster]

They were certainly in use when I was a student tech in 1962. Maybe not in
commercial gear, bet certainly in mil stuff. We used 1N457s everywhere.

-John


Duane Fischer, W8DBF wrote:

> John,
>
> I am not questioning your statements John, just wondering about the dates. I
> was blinded in October 1964 when I was shot, I do not remember seeing the
> color codes on diodes. Did I simply miss them or perhaps did they occur
> after I was blinded?
>
> DBF
>
> ----- Original Message -----
> From: "J. Forster" <jfor at quik.com>
> To: "Yong Surk Lee/HL1FB" <yonglee at yonsei.ac.kr>; "boatanchors @ qth.net"
> <boatanchors at mailman.qth.net>
> Sent: Saturday, March 04, 2006 12:16 PM
> Subject: Re: [Boatanchors] Diode color coding
>
> > Most likely yes. In the early days, diodes were not marked as consistently
> > as resistors. By the '60s, they were pretty good about it on the glass
> > ones anyway. IN457 were almost always
> > Yellow-Green-Violet. I remember 1N34s with white bodies  and two color
> > bands. By the '80s they were printing numbers on them.
> >
> > BUT, computer makers often 'house numbered' diodes, so it's not 100%.
> >
> > -John
> >
> >
> > Yong Surk Lee/HL1FB wrote:
> >
> >> Hello;
> >>  I have a bunch of glass diodes with 3 bands of colors. For example if
> >> the colors are red-white-green, then is it 1N295? Could someone answer
> >> this? What will be the coding for 1N34?
> >> de HL1FB/WW6N
> >
> >
> >
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