Parts · Transistors

BC548B

4 circuits use 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
BC548B	200	30 V	100 mA	0.5 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC549B	200	30 V	100 mA	0.5 W	200 MHz	8
BC547B	200	45 V	100 mA	0.5 W	200 MHz	11
BC550B	200	45 V	100 mA	0.5 W	150 MHz	2
ECG123A	200	40 V	800 mA	0.5 W	300 MHz	1
BC546B	200	65 V	100 mA	0.5 W	150 MHz	2
BC107B	200	45 V	100 mA	0.3 W	150 MHz	4
BC550	240	45 V	100 mA	0.5 W	200 MHz	10
2N6428	200	50 V	200 mA	0.625 W	100 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SC1959GR	200	30 V	500 mA	0.5 W	150 MHz
2SC2982B	200	30 V	2000 mA	0.5 W	150 MHz
KSP6520	200	25 V	100 mA	0.625 W
BC848B-AU	200	30 V	100 mA	0.33 W
BC849B-AU	200	30 V	100 mA	0.33 W
BC510	200	25 V	200 mA	0.36 W	200 MHz
BC510B	200	25 V	200 mA	0.36 W	200 MHz
BC290	200	40 V	100 mA	0.36 W

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
HUGE Fuzz 2N5089 · BC548B	Massif	Fuzz	Fuzz Dog	1590B	2	£21.60	16
Humanoid BC548B · OPA2134	Shin’s Music Dumbloid	Overdrive	PCB Guitar Mania	125B	—	€9.90 out	36
Ginormous Fuzz 2N5089 · BC548B	Frost Giant Electronics Massif Fuzz	Fuzz	PedalPCB	125B	2	$8.00	18
Special Overdrive BC548B · OPA2134	Shin's Music Dumbloid	Fuzz	PedalPCB	125B	5	$8.00	42