# Diode Question

Discussion in 'Electronic Basics' started by Brian Molnar, Apr 10, 2004.

1. ### Brian MolnarGuest

I have an old diode, I'm pretty sure it's a diode, from the late sixties
that's labelled 1449 GE, I looked all over the internet and can't find any
info on this diode. I have to replace this in an old piece of equipment, so
I was gonna buy a substitute for it and I just want to make sure I can find
one with the same or very similar specs. If anyone has any specs on this
diode, or knows of a good substitute, or even where I could buy some of
these original diodes, I'd be greatly appreciative.

- Brian Molnar

2. ### Chaos MasterGuest

Qu0t1n a 31337 h4ck3r 14b3113d Brian Molnar []:
In what application is it used (e.g. power supply)? This may give a guess.

[]s

3. ### Brian MolnarGuest

Yeah, you got it right on the nose. It's used in a combined power supply /
amplifier for an organ. The diodes themselves are presumable being used for
rectification, since they are attatched to one of the secondary windings of
the main transformer. I treid to reference the transformer on a couple
sites to find out what the voltage ratios of the windings are, but no luck.
So I don't know how much voltage we're dealing with. Also, I looked at a
couple of the caps, and the largest ones are rated for 60 V and the smaller
ones are rated for 25 V, so I'd imagine the diodes should be able to handle
up to 25 V.

4. ### CFoley1064Guest

Subject: Re: Diode Question
Hi, Brian. I believe you've got a 1N1449, which was made by GE back when the
earth's crust was cooling. The 1N1449 is a silicon rectifier diode with a PIV
of 400V and an I(f) of 1.5A max. You should do fine with a 1N5404 as a
replacement
(PIV = 400V, I(f) = 3A.)

Good luck
Chris

5. ### Brian MolnarGuest

Looks like I'll be takin a trip down to The Shack today. Thanks a lot for
the info.

- Brian