29 Apr
2012
29 Apr
'12
10:09 a.m.
For your description, any 1n400x diode would fit the bill...
---
Enviado do meu Motorola PT550
Meu site: http://www.tabalabs.com.br
----- Original Message -----
From: "Rob Jarratt" <robert.jarratt at ntlworld.com>
To: "'General Discussion: On-Topic and Off-Topic Posts'"
<cctalk at classiccmp.org>; "'General Discussion: On-Topic Posts
Only'"
<cctech at classiccmp.org>
Sent: Sunday, April 29, 2012 11:34 AM
Subject: RE: Replacement Diode
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of cctech at vax-11.org
Sent: 29 April 2012 14:06
To: General Discussion: On-Topic Posts Only
Subject: Re: Replacement Diode
According to http://so-much-stuff.com/pdp8/repair/subst.php a D672
crosses to a 1N3656 diode, which you can (theoretically) get from
amazon.com (or your local flavor thereof)
I would resist the urge to plug something that looks similiar in to see
what
happens. You run the risk of damaging something
else.
Clint
Thanks for the link, that is really useful, I had not come across it
before.
Actually, it shows the 672 to be either a 1N3653 or a 1N3656. I can find
more info on the 3653 than the 3656. The 3653 appears to have a spec
equivalent to or better than what it lists in the parts list.
Now it seems I have to find the modern equivalent of those diodes. A
1N4149
seems to fit the bill, does that seem reasonable? Here is Farnell's
description:
http://uk.farnell.com/fairchild-semiconductor/1n4149/small-signal-diode-0-5a
-do35/dp/1651147
Thanks
Rob