Anybody able to point me towards some alternative replacement driver transistors for this pair? (MPSU07 & MPSU57) Those 2 are a little pricey, and apparently arent made anymore, so i was hoping to find an alternative that was a bit more cost effective. Thank you, I appreciate it very much.
Well I'm not ignoring you but I don't have an answer either. I haven't come up with anything suitable in a compatible package, or even a SM package for that matter. Can you relax the specs e.g do you really need 10W @ Tc=25C?
where are you going to use them?
without that information it will be hard to find a substitute..
Any reason a TIP31C and TIP32C wouldn't work? The legs are in different order, so you turn the part sideways and bend the legs to suit the holes.
I might also try MJE243 and MJE253, again, the legs are in different order, but that should not be a problem.
OK, where are you located? And how many do you need?
I just did inventory on my transistor stock, and the "case 152" series I have a few.
I have ONE MPSU57 equivalent in the Motorola HEP series NOS.
I have TWO MPSU07 NOS, and one equivalent NSDU07 also NOS.
If those few will help you, I will let them go cheap.
And the others I have with amounts:
MPSU06 - 17
MPSU10 - 7
MPSU45 - 3
MPSU60 - 2
Those are not rally related to the 07/57 pair, but I have no idea what you are working on.
Quote from: Vitrolin on September 04, 2016, 01:57:06 PM
where are you going to use them?
without that information it will be hard to find a substitute..
Lets play the guessing game??? Polytone?? :duh :duh
IF they are to be used in a Polytone, most any transistor same case and standing some 80Vce will be fine, because 2X rail voltage does not reach that.
Meaning many of Enzo´s will work fine, just doublecheck datasheets.
Wouldn´t trust EBay purchases.
I am repairing a pignose 30/60, i have replaced the output transistors and next on my list is to replace the drivers. Sorry it took a little while to reply, ive been away from home.
Enzo, I am located in california, and unless i mess something up (fingers crossed) i only should need 1 pair.. thanks for the offer, i would be extremely pleased if you would sell them to me for a good price!
Then if you haven't already, send me a PM about this.
I was laid up for a couple days, but I did get your parts mailed out Friday. You should see them soon.
Thanks, Enzo. I really appreciate it!