Parts · Transistors

BC186

Si PNP BJT.2 circuits use 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
BC186	40	25 V	100 mA	0.3 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2N5139	40	20 V	100 mA	0.2 W	300 MHz	2
PN200	40	35 V	500 mA	0.625 W	150 MHz	1
2N4125	50	30 V	200 mA	0.31 W	200 MHz	18
2N2907	35	40 V	600 mA	0.4 W	200 MHz	38
2N2904A	40	60 V	600 mA	0.6 W	200 MHz	1
2SA733	40	40 V	300 mA	0.25 W	90 MHz	6
2N3905	50	40 V	200 mA	0.31 W	200 MHz	6
BC212L	50	50 V	200 mA	0.3 W	200 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BSS25	40	25 V	400 mA	0.35 W	200 MHz
KSA1150	40	20 V	500 mA	0.3 W
BSW72	40	25 V	500 mA	0.4 W
BC388	40	35 V	600 mA	0.31 W	200 MHz
2N3545	40	20 V	200 mA	0.36 W	200 MHz
PN4142	40	40 V	500 mA	0.3 W	200 MHz
2N5354	40	25 V	500 mA	0.36 W	250 MHz
BSW19	40	30 V	100 mA	0.3 W	150 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	WEM Project V Vero24×17 Verified BC108B · BC186 WEM Project V fuzz	WEM Project V fuzz	Fuzz	Dirtbox Layouts	—	2	—	41
	WEM (Watkins) Project V Fuzz Vero BC108B · BC186 WEM Watkins Project V Fuzz	WEM Watkins Project V Fuzz	Fuzz	Revolution Deux	—	4	—	53