11 Apr
2012
11 Apr
'12
5:14 a.m.
On Apr 11, 2012, at 7:29 AM, Chris Elmquist wrote:
On Wednesday (04/11/2012 at 09:23AM +0100), Rob
Jarratt wrote:
OnSemi makes a lot of older transistors (they still have half the ones
needed to fix a Wurlitzer electric piano). Confusingly, the datasheet
title says "NPN", but everything else says "PNP"; it's probably
because the datasheet is for both the NPN devices (MPS?05) and the PNP
ones.
In any case, that should be a 100% correct replacement; they may be
hard to find in stock abroad. I could only reliably find them at
Arrow in the US when I was fixing my Wurlitzer.
- Dave
I need to replace a transistor in my H7140 PSU
for my PDP11/24. The
transistor is marked GPSA55J3 and the printset identifies it as "XA 55 PNP
500MW SI 60 50 P", it is in a TO-92 package. I have tried to find specs for
an A55 and can only find partial matches, so I am not sure what today's
equivalent would be. Can anyone help me work out what the equivalent today
would be?
MPSA55G?
http://www.onsemi.com/PowerSolutions/product.do?id=MPSA55