Parts · Transistors

BC239C

1 circuit uses this part. Listed as: BJT transistor, NPN TO-92.

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
BC239C	420	20 V	100 mA	0.3 W	150 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC109C	420	20 V	100 mA	0.3 W	150 MHz	15
BC108C	420	20 V	100 mA	0.3 W	150 MHz	3
BC184C	450	30 V	200 mA	0.3 W	150 MHz	4
BC183C	450	30 V	200 mA	0.3 W	150 MHz	1
BC549C	420	30 V	100 mA	0.5 W	200 MHz	65
BC548C	420	30 V	100 mA	0.5 W	200 MHz	2
BC550C	420	45 V	100 mA	0.5 W	150 MHz	15
2N5089	400	25 V	50 mA	0.31 W	50 MHz	136

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC208C	420	20 V	100 mA	0.3 W	150 MHz
BC238C	420	20 V	100 mA	0.3 W	150 MHz
BC148C	420	20 V	200 mA	0.25 W	150 MHz
BC149C	420	20 V	200 mA	0.25 W	150 MHz
BC408C	420	20 V	100 mA	0.25 W	150 MHz
BC409C	420	20 V	100 mA	0.25 W	150 MHz
BCF29C	420	20 V	200 mA	0.25 W	165 MHz
BCF92C	420	20 V	200 mA	0.25 W	165 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Buffalo Hump Distortion BC239C	Buffalo FX RH-X '76	Distortion	PedalPCB	125B	4	$12.00	53