[Premium-Rx] Help.... What The Heck Are These ?

[Karl-Arne Markström]

These are very old silicon diodes, 400 V PIV 600 mA about.
They were introduced in the early sixties. 
Four of these were used in my first solid-state rectifier ever, in 1964...

Ah, memories.

73/

Karl-Arne
SM0AOM


----- Original Message ----- 
From: "Michael Melland" <w9wis at yahoo.com>
To: <premium-rx at ml.skirrow.org>; <qrp-l at mailman.qth.net>
Sent: Thursday, June 16, 2005 1:03 AM
Subject: [Premium-Rx] Help.... What The Heck Are These ?


> Sorry for the off topic post but someone here "has" to
> know what these are.  I picked up a bunch from the
> physics department at the college I work at a  while
> back ... they were tossing them.  But... try as I
> might I can't determine just what they are.  I do know
> they came from test equipment or microwave gear.
> 
> They are 1 inch long, about .25" diameter on the ends
> with a slightly larger ceramic body.  There is a
> silver metal end and a gold colored end and they
> obviously plug sort of like a fuse.  There is a
> marking like a shotglass with S over T in it and a "+"
> on one end, the number 6846148 on one side of the
> ceramic body... the number M 150 is on the other.
> 
> What the heck are these ? Diode ? Fuse ? Tube of some
> sort ?
> 
> Links to poor photos here:
> 
> http://home.centurytel.net/w9wis/whatsit1.jpg
> http://home.centurytel.net/w9wis/whatsit2.jpg
> 
> Thanks,
> 
> Mike
> 
> 
> 
> 
> 
> --
> Michael Melland, W9WIS
> Redgranite, WI USA
> 
> 
> 
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