Author Topic: output transistor options for sj-954 transistors in a SUNN alpha slave head (Read 2876 times)

ampman · « **on:** February 10, 2011, 02:34:22 pm »

Is there a suitable substitute for the motorola # sj-954 pnp output transistor found in a SUNN alpha slave head?

mckinnon audio · « **Reply #1 on:** February 15, 2011, 08:41:43 am »

Hi there,the SJ prefix tells us that it is a Motorola device,I would try to get the orig.'s if possible.A sub from ECG,(now NTE) would be a NTE - 219 PNP,Si,audio amp or switch use.It's mate would be a NTE - 130 NPN. The Motorola's are a better trans.,in my opinion,if it was my amp,I would try to get the originals,or replace them all with the same make.Good luck,Mel.

george · « **Reply #2 on:** February 16, 2011, 09:59:12 pm »

Can you describe the package - epoxy TO-220 or hermetic metal can TO-3?? The "SJ" suffix is part of a custom or "special" part number. Motorola (now ON) still sells a MJE9780 (PNP 3A/150V TO-220).....

mckinnon audio · « **Reply #3 on:** February 17, 2011, 01:45:52 pm »

It's a TO-3 case.

george · « **Reply #4 on:** February 18, 2011, 12:49:46 am »

MJ15004G 20A/140V min $1.87 avg $2.7853 I like On Semi

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Are there any suitable subsititutes for the pnp motorola # sj-954 output transistors?

Author Topic: output transistor options for sj-954 transistors in a SUNN alpha slave head (Read 2876 times)

ampman

output transistor options for sj-954 transistors in a SUNN alpha slave head

mckinnon audio

Re: output transistor options for sj-954 transistors in a SUNN alpha slave head

george

Re: output transistor options for sj-954 transistors in a SUNN alpha slave head

mckinnon audio

Re: output transistor options for sj-954 transistors in a SUNN alpha slave head

george

Re: output transistor options for sj-954 transistors in a SUNN alpha slave head