SFM 40 Diode?

[Embryp]

Click here: EDI, high voltage rectifiers and full wave bridges, high voltage assemblies, night vision arrays, high voltage 
or
http://www.edidiodes.com/

You will find the HTD3 EDI under Special Devices. It's probably measuring correctly. It's a 3KV PRV 50 ma 200 degree Centigrade operation diode.
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I have a schematic that shows a device drawn as a conventional diode and
labeled SFM 40.� I have two of the boards and one has a device in said
location marked ED6343 EDI, the other HT03 EDI.� Could EDI be the
manufacturer?� These devices have a cathode band on the case, but do not
seem to have a junction when tested.� The exhibit very high resistance in
one direction (3 megohm or so) and infinite resistance in the other.� They
are in an epoxy case that is about the length of a 1/2 watt resistor, but
smaller in diameter than a IN4007.� They are also multisided and not round.
Anybody have an idea what these lil buggers might be?

Syd H. Levine
AnaLog Services, Inc.
Phone:� 270-276-5671
Telefax: 270-276-5588
E-mail:� [EMAIL PROTECTED]
URL:� www.logwell.com