RE: seemingly non-existant diode

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Philip Chalk" <phil-at-apsecurity-dot-com.au> 

H18, Jim, all,

Sounds about right to me, Jim.  My first thought was that the 2264 was a
date-code, but not in that package. 1200V, 10A seems about right.

If the part pictured is 'good' (still working), it's fairly easy to
determine if it's a rectifier or a zener, then guess at likely ratings
etc.

Btw, I recently needed an obscure old Motorola transistor for the
electronic ignition in an old Ferrari. (I get all the weird
'love-jobs'). It was an Aus$4000 box to replace, needed a $13
transistor..  Motorola were no help, & don't make it any more, On Semi
did (Same no. different suffix, different package, but good enough)

They were around US$13 ea. But I only had to tell a small white lie
about this new development project I was looking into & they sent me 10
samples - FREE - drop-shipped from Taiwan, & in my mailbox about 1 week
after my email enquiry.  Very Nice Guys, On Semi.

Cheers,

Phil Chalk.


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Thursday, 26 February 2004 1:24 AM
To: tesla-at-pupman-dot-com
Subject: Re: seemingly non-existant diode

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>

If the T8436 is a date code (which seems likely), then that part was
made 20
years ago.  Not surprising that they don't have a current data sheet for
it.
You need to hunt down some old Motorola Power Semi databooks from the
80's.
I don't think Moto-SPS or even On-Semi makes power diodes anymore.


however, assuming that it's a 1N2264 (seems reasonable?)  I came up
with:
http://www.chipdocs-dot-com/pndecoder/datasheets/MSEMI/1N2264.html
which shows it's in a DO-4 package (which looks like your picture)

I found a datasheet at Microsemi:
http://www.microsemi-dot-com/catalog/part.asp?id=1563
It's a 1200V, 10A part. Here's the pdf datasheet:
http://www.microsemi-dot-com/datasheets/COE-9.PDF

It's a pretty old part (considering that it's lower numbered than, say,
1n400x or 1n540x, which are, in themselves, pretty old parts).

I'm surprised that someone still makes it.  There are lots of better
parts
that would be a drop-in replacement (unless you were depending on some
peculiarity in the diode.. maybe it's hideously slow recovery time or
fairly
high Vf?)

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, February 24, 2004 8:25 PM
Subject: Re: seemingly non-existant diode


  > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
  >
  > it doesnt suprise me. Motorola doesnt seem to care about supporting
  > products. I once received a well formed sentence(in correct Chinese
grammar,
  > utilizing English words)about how they could not give me the info on
a
  > transistor because it was obsolete. Has it ever occured to them a
transistor
  > isnt like a CPU, that quickly becomes obsolete in a few years? That
looks
  > like some diodes I have, and I have Philiips cross reference book and
it
  > doesnt mention that diode.
  > ----- Original Message -----
  > From: "Tesla list" <tesla-at-pupman-dot-com>
  > To: <tesla-at-pupman-dot-com>
  > Sent: Tuesday, February 24, 2004 5:50 PM
  > Subject: seemingly non-existant diode
  >
  >
  >  > Original poster: "Christopher 'CajunCoiler' Mayeux"
<cajuncoiler-at-cox-dot-net>
  >  >
  >  > I was hoping that someone on this list could cross-reference
  >  > a diode I have, which bears a Motorola logo, yet Motorola
  >  > swears it doesn't exist.
  >  >
  >  > Markings: (motorola logo) 2264 (diode symbol) T8436
  >  >
  >  > Picture: http://www.msbdatasystems-dot-com/diode.jpg
  >  > --
  >  > Christopher 'CajunCoiler' Mayeux
  >  > cajuncoiler-at-msbdatasystems-dot-com
  >  > http://tesla.msbdatasystems-dot-com
  >  >
  >  >
  >  >