Posted by: Harm2k17
« on: September 08, 2017, 11:07:27 pm »The 2SC1970, 2SC1971 are obsolete for some years now, Mitsubishi doesn't make them anymore. The replacement is an RD06HVF1, however this is an n-mos rf transistor not an npn transistor, you can't simple swap them out.
For the 2sc1971 watch out for fakes and counterfeits, they're all over the place.
You'll have to change the circuit to use an RD05 or an RD15.
P.S.: See schematic below for clearance. I've remove my email from the drawing to avoid excessive emails. I also have a prototype pcb in Sprint Layout 6.0 if you need it.
For the 2sc1971 watch out for fakes and counterfeits, they're all over the place.
You'll have to change the circuit to use an RD05 or an RD15.
P.S.: See schematic below for clearance. I've remove my email from the drawing to avoid excessive emails. I also have a prototype pcb in Sprint Layout 6.0 if you need it.