Parts · Transistors

2SB647C

Si PNP BJT.1 circuit uses this part.

Substitutes Si PNP transistor

Matched on material, polarity and the limits below from the transistor parameter database. Pinouts and packages are not in that data: check the datasheet before you drop one in, and expect gain to change the sound.

This part

Part	hFE min	Vce	Ic	Pc	fT
2SB647	60	80 V	1000 mA	0.9 W	70 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
MPS-U55	50	60 V	2000 mA	8 W	100 MHz	1
2N2904A	40	60 V	600 mA	0.6 W	200 MHz	1
2N2905A	100	60 V	600 mA	0.6 W	200 MHz	1
BD140	40	80 V	1000 mA	12 W	50 MHz	1
MPSA92	25	300 V	500 mA	0.625 W	50 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SA560	60	60 V	800 mA	0.8 W	75 MHz
BC364	60	80 V	1000 mA	1 W	50 MHz
MPSU57	60	100 V	2000 mA	1 W	50 MHz
BC490	60	80 V	1000 mA	0.625 W	100 MHz
BC363	60	60 V	1000 mA	1 W	50 MHz
2SA581	60	60 V	600 mA	0.8 W	50 MHz
2SA777	65	80 V	1000 mA	0.75 W	60 MHz
BSW40-10	63	80 V	1000 mA	0.79 W	50 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Roland TR-606 2SB586 · 2SB647C · 2SC2021/2SA937 · 2SC945/2SA733 Roland TR-606	Roland TR-606	Ring Mod / Synth	Experimentalists Anonymous	—	8	—	659