Power Range(r) Master

[Sooner Boomer]

I just found these at one of my favorite sources. Power Ge transistor.

Maximum Collector Power Dissipation (Pc): 187 W
Maximum Collector-Base Voltage |Vcb|: 60 V
Maximum Collector-Emitter Voltage |Vce|: 50 V
Maximum Emitter-Base Voltage |Veb|: 28 V
Maximum Collector Current |Ic max|: 25 A
Max. Operating Junction Temperature (Tj): 100 °C
Transition Frequency (ft): 0.1 MHz
Forward Current Transfer Ratio (hFE), MIN: 10
Noise Figure, dB: -
Package: TO61

hFE of *10*

I don't even know the pinout for TO61.

https://www.goldmine-elec-products.com/prodinfo.asp?number=G25014

at $15 a piece, it's a bit pricey for me to play with, but someone here might want to build a rangemaster or fuzz for *real* power chords!

[iainpunk]

Hfe of 10 is a way on the low side for a range master IMO, i never go below 30.

i have some transistors in the TO61 package, and some diodes in the DO4, which is the single pin version.
there isn't a fixed pinout for the TO61, but the Si transistors i have are both BCE, where the hook is the base, the eyelets are collector and emitter. i guess that depends on the specific transistor.
that is a really steep price for a transistor tho.

cheers

[Gus]

With that low a Beta you might want to try a passive C R C before the amp no transistor.

.0047uF series input , 68k to ground and maybe a cap across the 68k as a transistor input capacitance sim.