Threshold 800A and other old models: Mospec 2N5876/2N5878 or ON MJ21193/MJ21194 ?

[tiefbassuebertr]

I discover the follow websites from Mospec:
POWER TRANSISTORS
CONTACT US
and I note, that there offer the most old Motorola BjT power devices.
So I must ask, what is the better solution for replace:
to choice the Mospec with original type number or the ON successors from Motorola?
Because I haven't the possibility of analyzing the P-spice parameter, I can't find clearly the right answer

[Mark Allen]

It has been my experience that many times those semiconductor places require minimum orders of devices. I don't know this place but I buy high power obsolete MOSFETS used for xenon switching power supplies from one place in China and I have to buy at least 24 pieces each time.

Mark

[tiefbassuebertr]

A curve tracer about
DIY Curve Tracer for PC
and a additional CAD supported P-Spice analysing certainly would be find out this

In this case the last posts of
bipolar (bjt) transistor families for audio power output stages
could be of interest

[Nelson Pass]

Originally Posted by tiefbassuebertr

So I must ask, what is the better solution for replace:
to choice the Mospec with original type number or the ON successors from Motorola?

It looks like the On Semi parts will drop right in, and they
have more current and dissipation. I would go for them.

[BANANABRAIN]

Originally Posted by Nelson Pass

It looks like the On Semi parts will drop right in, and they
have more current and dissipation. I would go for them.

HELLO MR. PASS, IS THERE ANYPLACE I CAN GET A COPY OF THE FET-9 MAUAL. I SEEM TO HAVE LOST MINE OVER THE YEARS,. BUT I AM EXTREMELY HAPPY WITH MY STASIS S/500 POWER AMP AND MY FET-9 PRE-AMP. THANK YOU ,ALLAN ROTHMAN

[Nelson Pass]

I'm sorry, but I don't seem to have a copy.

[BANANABRAIN]

Originally Posted by Nelson Pass

I'm sorry, but I don't seem to have a copy.

OK THANKS ANYWAY, APPRECEATE YOUR AT LEAST ANANSWERING. THANK YOU, ALLAN ROTHMAN