Hi Jim
I looked at Digikey, Mouser, Newark, Allied...... They all list it but
they don't have any in stock, and they say it is obsolete or they have a
minimum order of several hundred. Newark has something that should work
but it has no information or a datasheet. I might just order this and
cross my fingers:
http://www.newark.com/nte-electronics/tip145/t-pnp-si-po-darlington/dp/33C6995
I looked at all the SG4501 info and the transistor datasheets on your
Neotek page it has been very helpful. I'm just not 100% sure how exact
this part needs to be.
Of course I'll replace the tip140 transistor with a NPN version of
whatever I find to serve as the PNP part.
Thanks for all your help,
Jared
On 5/24/11 5:20 PM, Jim wrote:
Hi Jared,
I'm about certain I got them from Mouser................not sure
about substitutions though. Check the Neotek web page, I may have put
up the application notes for them. BTW, if one goes, I replace the
other at the same time.
Regards, Jim
At 04:15 PM 5/24/2011, you wrote:
I have a TPS-05 power supply (the small one) that has gone down. It
appears that one of the power transistors has failed. It is a tip145.
I've done some looking and not finding this exact part available
anywhere. Can I replace it with a tip146 or 147? Or does anyone know
of a different transistor that would work.
I have a schematic and some data sheets if anyone cares to look at them.
Thanks,
Jared
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