Parts · Transistors

BC170B

Si NPN BJT.1 circuit uses this part.

Substitutes Si NPN 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
BC170B	80	20 V	100 mA	0.3 W	60 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2N2712	75	18 V	100 mA	0.2 W		1
2N3416	75	50 V	500 mA	0.36 W		1
2N3393	90	25 V	100 mA	0.2 W	70 MHz	4
BC208	75	20 V	100 mA	0.3 W	150 MHz	1
PN3565	70	25 V	100 mA	0.36 W	40 MHz	2
2N3569	100	40 V	500 mA	0.3 W	60 MHz	3
BC338	100	20 V	800 mA	0.625 W	60 MHz	11
MPS6513	90	30 V	100 mA	0.31 W	125 MHz	6

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SC2069	80	17 V	50 mA	0.35 W
2N2716	80	18 V	50 mA	0.2 W
2SC1961	80	20 V	100 mA	0.15 W
BSX78	80	20 V	100 mA	0.3 W	100 MHz
2SC1918	80	20 V	100 mA	0.2 W	75 MHz
2SC1631	82	25 V	200 mA	0.25 W	70 MHz
2N3414	75	25 V	500 mA	0.36 W
BSW88	75	30 V	100 mA	0.3 W

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Fuzzwah face ? · BC170B	—	Fuzz	Experimentalists Anonymous	—	—	—	10