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SX-636 Transistor Substitution

mustang1102

mustang1102

AK Subscriber
Subscriber
Working on restoring a sx-636.....need to replace the 2SC1451 transistors. Common replacement cited here on AK hundreds of time is the 512-KSC3503dstu. However, neither Mouser or Digikey has them in stock. Does anyone know of a suitable replacement, for the replacement.....?

Or, do I wait 6 weeks for stock to be replenished....?
 
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A KSC2316Y should get the job done, albeit with slightly higher Ft, so be sure the feedback caps are in working order.

A KSC2690 is a bit of overkill, but specs in Hfe and Ft are similar enough to work. Although it is not classified as a "low noise" device, noise figures are not bad, and current/voltage ratings are more than adequate. The mounting holes may need to be enlarged slightly to fit the leads, however.
 
Dang, Digikey just ran out so I ordered from Mouser two days ago and now they're out. Crazy. If you really need em' DM me.
 
ivandezande said:
Dang, Digikey just ran out so I ordered from Mouser two days ago and now they're out. Crazy. If you really need em' DM me.
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Thank you for the offer.....you guys on AK are great. As long as I have an order going in to Digikey, I'll try a couple of the suggestions offered by Watthour above. If they don't work out, I'll let you know.
 
Watthour said:
A KSC2316Y should get the job done, albeit with slightly higher Ft, so be sure the feedback caps are in working order.

A KSC2690 is a bit of overkill, but specs in Hfe and Ft are similar enough to work. Although it is not classified as a "low noise" device, noise figures are not bad, and current/voltage ratings are more than adequate. The mounting holes may need to be enlarged slightly to fit the leads, however.
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Thank you, again !! I'll give them a try, really don't want to have to wait for 6 weeks.
 
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