Sansui G4700 output transistor replacement

[jefferylhenr]

The original output transistors 2SA1102 / 2SC2577 for the G4700 are essentially unavailable. Would the 2SA1693 / 2SC4466 or the 2SA1492 / 2SC3856 be good replacements? The 2SA1492 / 2SC3856 might be overkill, but could they be more resilient? Or would they not work at all?


Transister Combo PC(W) VCEO(V) IC(A) hFE(min) fT(MHz)

2SA1693 / 2SC4466 60 80 6 50 20

2SA1492 / 2SC3856 130 180 15 50 20

2SA1102 / 2SC2577 60 80 6 50 20

 

[Robisme]

You could use any of those you listed.

Rob

 

[jefferylhenr]

You could use any of those you listed.

Rob

Thanks Rob, have you used the 2SA1492 / 2SC3856 pair in a G 4700? It’s it just the hfe and ft that’s critical as long as the voltage and wattage is at least equal or higher?

 

[xrayspex77]

2SA1693 / 2SC4466

I used those in my G4700, only problem is I ended up selling it and regret it at times.