Switching diodes are generally non-critical. After all, there are only two
states - on or off. Normally, substituting any other switching diode will
be
fine.

Colin K7FM

"COLIN LAMB" wrote in message
ink.net...
Switching diodes are generally non-critical. After all, there are only
two
states - on or off. Normally, substituting any other switching diode
will be
fine.

Colin K7FM




While I know this to be true - and agree with you 100% - I always try to get
a sub number as a matter of principle. Amazing - all the resources for parts
that I have online have "nothing found" - listed. I've got quite a few older
crosses also, and again - nada. Yes - a couple "surplus sellers" who
supposedly deal in obsolete parts and sell them for $100 each or more -
claim to have them.

I tried ECG (I know they were acquired), NTE, Fairchild - who I believe this
came from, and so many others who had "parts cross references" on their
sites. NADA......... There were some "almost" close hits - but no bulls eye.
I must now wonder if this number was a "misprint" OR an in house number. The
latter would be strange because the radio used other parts - very easily
crossed.

Yes, most definately - I've created more work than what it is worth - but
why - is because as we know - some ICs and Transistor numbers get changed
over time and if some sort of record can be kept - it makes life a lot
simpler. TOO often - I have seen people asking for crosses for parts - some
rescued by an answer - some not.
I - like others - have been able to take an old transistor number - no
longer used - part perhaps not even made - and been able to get the specs on
that part and acquire a part with similar enough characteristics to make it
work. So - as a matter of principle - I try to do that with any "off the
wall" number such as this part - that I find. Who knows, some day someone
else may need a number "I" have crossed and I can help them!
It sure makes life easier........

Funny though - in my haste to type a post for finding said cross, I
mentioned it to be a switching transistor - which brought question of my
knowing a transistor from a diode. I had meant to say the "diode" was a
"Switching Diode" - used to switch a transistor on/off.

I've got a drawer full of switching diodes here and when I get time, will
slap one in and the problem will be solved.

"Radiosrfun" wrote in message
...
"COLIN LAMB" wrote in message
ink.net...
Switching diodes are generally non-critical. After all, there are only
two
states - on or off. Normally, substituting any other switching diode
will be
fine.

Colin K7FM




While I know this to be true - and agree with you 100% - I always try to
get a sub number as a matter of principle. Amazing - all the resources for
parts that I have online have "nothing found" - listed. I've got quite a
few older crosses also, and again - nada. Yes - a couple "surplus sellers"
who supposedly deal in obsolete parts and sell them for $100 each or
more - claim to have them.

I tried ECG (I know they were acquired), NTE, Fairchild - who I believe
this came from, and so many others who had "parts cross references" on
their sites. NADA......... There were some "almost" close hits - but no
bulls eye. I must now wonder if this number was a "misprint" OR an in
house number. The latter would be strange because the radio used other
parts - very easily crossed.

Yes, most definately - I've created more work than what it is worth - but
why - is because as we know - some ICs and Transistor numbers get changed
over time and if some sort of record can be kept - it makes life a lot
simpler. TOO often - I have seen people asking for crosses for parts -
some rescued by an answer - some not.
I - like others - have been able to take an old transistor number - no
longer used - part perhaps not even made - and been able to get the specs
on that part and acquire a part with similar enough characteristics to
make it work. So - as a matter of principle - I try to do that with any
"off the wall" number such as this part - that I find. Who knows, some day
someone else may need a number "I" have crossed and I can help them!
It sure makes life easier........

Funny though - in my haste to type a post for finding said cross, I
mentioned it to be a switching transistor - which brought question of my
knowing a transistor from a diode. I had meant to say the "diode" was a
"Switching Diode" - used to switch a transistor on/off.

I've got a drawer full of switching diodes here and when I get time, will
slap one in and the problem will be solved.

Again, in haste - I had forgotten to thank you for your input...........

THANKS!

Finding the cross referenced number and using that part is part of the fun -
so long as the part is not overpriced.

When i saw the original post, I thought perhaps a transistor was used as a
diode. That was not uncommon, using just two leads. It was sometimes used
where temperature detection was desired using that junction.

Of course, if you were really good, you could take the diode apart and make
an new junction, then make a new case and renumber the part. If you were
less scrupulous, you could simply find a cheap diode and remove the part
number and put on the old part number on the new diode. Special skill to
make writing that small look professional, though.

Colin