Parts · Transistors

BC548

4 circuits use 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
BC548	110	30 V	100 mA	0.5 W	300 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC547	110	50 V	100 mA	0.5 W	300 MHz	2
BC549	110	30 V	100 mA	0.5 W	200 MHz	6
2N2222	100	30 V	800 mA	0.5 W	250 MHz	51
BC546	110	80 V	100 mA	0.5 W	300 MHz	1
2N2219A	100	50 V	800 mA	0.8 W	300 MHz	2
2N4401	100	40 V	600 mA	0.31 W	250 MHz	24
MPS4124	120	25 V	200 mA	0.625 W	170 MHz	1
BC546A	110	65 V	100 mA	0.5 W	150 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC849AR	110	30 V	100 mA	0.31 W	300 MHz
BC549A	110	30 V	100 mA	0.5 W	200 MHz
2SC5730	120	30 V	1000 mA	0.5 W	270 MHz
BSW83	100	25 V	500 mA	0.5 W
BCW71	110	45 V	100 mA	0.35 W	300 MHz
BCW71R	110	45 V	100 mA	0.35 W	300 MHz
BC847A-AU	110	45 V	100 mA	0.33 W
2N2540	100	30 V	500 mA	0.5 W	250 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Milky Fuzz 2N3906 · BC548	JT White Pedal	Fuzz	Fuzz Dog	1590B	4	£43.20	49
Whiteboard 2N4125 · BC548	Jext Telez White Pedal	Fuzz	PCB Guitar Mania	125B	4	€11.90 out	51
Conqueror Fuzz 2N4125 · BC548	Jext Telez White Pedal	Fuzz	PedalPCB	125B	5	$12.00	51
ShamWah! BC548	Vertex Axis Wah	EQ / Filter	PedalPCB	—	2	$15.00	32