G9700 outputs

Willy6

AK Subscriber
Subscriber
Does anyone know of a suitable replacement for the 2SC2607 and 2SA1116 outputs?
 
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2SC2607 - NPN = MJ21196G - http://www.mouser.co.uk/ProductDetail/ON-Semiconductor/MJ21196G/?qs=sGAEpiMZZMshyDBzk1/Wi/PUgtclNldlzlFQOXdLBkg=
2SA1116 - PNP = MJ21195G - http://www.mouser.co.uk/ProductDetail/ON-Semiconductor/MJ21195G/?qs=sGAEpiMZZMshyDBzk1/Wi/PUgtclNldly3XRm7%2bzEL0=

I noticed someone using the above transistors for a rebuild the other day - and wondered why they didn't use the normally preferred MJ21193G/94G - now I know why..... they've been marked OBSOLETE!
I noticed on ebay that little diode from the UK has the original SanKen 2SC2607,2SA1116 transistors I wonder if they are counterfeit or the real deal?
 
I noticed on ebay that little diode from the UK has the original SanKen 2SC2607,2SA1116 transistors I wonder if they are counterfeit or the real deal?

I've had fake devices from Little Diode before so I don't use them any more.
New On-Semi devices are far superior to any transistor made in the 1970's....
 
2SC2607 - NPN = MJ21196G - http://www.mouser.co.uk/ProductDetail/ON-Semiconductor/MJ21196G/?qs=sGAEpiMZZMshyDBzk1/Wi/PUgtclNldlzlFQOXdLBkg=
2SA1116 - PNP = MJ21195G - http://www.mouser.co.uk/ProductDetail/ON-Semiconductor/MJ21195G/?qs=sGAEpiMZZMshyDBzk1/Wi/PUgtclNldly3XRm7%2bzEL0=

I noticed someone using the above transistors for a rebuild the other day - and wondered why they didn't use the normally preferred MJ21193G/94G - now I know why..... they've been marked OBSOLETE!

What are the rail voltages on the 9700? Probably can use something a little closer to the originals, but really its splitting hairs at the end of the day....
MJ15003/15004 are probably closer.....
 
Nice pictures but old I think, the quantities pictured are not available today. If you want to pay between $10 and $35 for ones and two's of potentially counterfeit transistors that's fine.

The notable exception is anything advertised there (on ebay) from AK member Kale, (ebay = kale1_1) when he says something is genuine - it is.
@Kale
 
I noticed on ebay that little diode from the UK has the original SanKen 2SC2607,2SA1116 transistors I wonder if they are counterfeit or the real deal?

I won't buy from Little Diode any more, I have got fakes off them before, I'm done with the whole "gotta be genuine" thing, modern TO-3's are superior in construction, manufacturing has come a long way since the '70s.

2SC2607 - NPN = MJ21196G - http://www.mouser.co.uk/ProductDetail/ON-Semiconductor/MJ21196G/?qs=sGAEpiMZZMshyDBzk1/Wi/PUgtclNldlzlFQOXdLBkg=
2SA1116 - PNP = MJ21195G - http://www.mouser.co.uk/ProductDetail/ON-Semiconductor/MJ21195G/?qs=sGAEpiMZZMshyDBzk1/Wi/PUgtclNldly3XRm7%2bzEL0=

I noticed someone using the above transistors for a rebuild the other day - and wondered why they didn't use the normally preferred MJ21193G/94G - now I know why..... they've been marked OBSOLETE!

I just looked them up and they are both available, but I can't see any difference between them....

See I would be using MJ15003/15004, they are 140V instead of 250v but they are 20 amp rather than 16 amp the other ones are, but they are 2mhz instead of the 4mhz, not sure if that is a factor......probably not I'd say...
 
Those MJ15003/4's have caught my eye too lately as McIntosh is quite fond of them.
However have had nothing but good luck with the 93/4's and never seen one fail.
 
Those MJ15003/4's have caught my eye too lately as McIntosh is quite fond of them.
However have had nothing but good luck with the 93/4's and never seen one fail.

I think McIntosh not only use them because of the lower ft and voltage, but they are higher current, and since the McIntosh Autotransformer amps run at 2.1Ω on the other side of the Xfrmr, I'd say the those devices are probably better in that respect...
 
The 95/96 have a wider SOA, but not really necessary in most anything out there that uses a TO-3 that I am aware of.
 
Hyperion,

You made my heart stop when you stated the 93/94s are obsolete. I just checked Mouser and I don't see anything about being obsolete. The non G (lead) version is obsolete though, more info please.

Craig
 
The MJ21193 and MJ21194 are and always have been available, they also still go under the original Motorola part number which is MJ15024/15025.
There's only 4,000 in stock ready for delivery......

Not sure why John thought they weren't available.....
 
Hyperion,
You made my heart stop when you stated the 93/94s are obsolete. I just checked Mouser and I don't see anything about being obsolete. The non G (lead) version is obsolete though, more info please.
Craig
Sorry Craig - that was totally incorrect information.
Not sure why John thought they weren't available.....
It seems I was being and idiot - I think I must have been seaching on the non-G type number :rolleyes: (this heat must be getting to me :)).

I'll edit the incorrect info earlier in this thread. :oops: - done.

(I'd be grateful if those that quoted me would edit the quote)
 
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Just don't let it happen again! LOL The good stuff is going away fast enough already!!!!

Craig
 
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