Parts · Transistors

BC548A

Si NPN BJT TO-92 TH.2 circuits use this part. Listed as: BJT transistor, NPN TO-92.

Datasheet · from onsemi.com

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
BC548A	110	30 V	100 mA	0.5 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC549	110	30 V	100 mA	0.5 W	200 MHz	40
BC547A	110	45 V	100 mA	0.5 W	200 MHz	4
2N2222	100	30 V	800 mA	0.5 W	250 MHz	129
BC547	110	50 V	100 mA	0.5 W	300 MHz	34
ZTX384	100	30 V	100 mA	0.45 W	150 MHz	1
TIS92	100	40 V	400 mA	0.625 W		4
PN4124	120	25 V	200 mA	0.625 W	170 MHz	2
BC546A	110	65 V	100 mA	0.5 W	150 MHz	5

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC549A	110	30 V	100 mA	0.5 W	200 MHz
BC849BF	110	30 V	100 mA	0.33 W	250 MHz
BSW83	100	25 V	500 mA	0.5 W
BC847A-AU	110	45 V	100 mA	0.33 W
2N2540	100	30 V	500 mA	0.5 W	250 MHz
BFV63	100	30 V	800 mA	0.5 W	250 MHz
BFX95	100	30 V	800 mA	0.5 W	250 MHz
2N5107	100	30 V	500 mA	0.36 W	200 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	JHS 3 Series Fuzz Vero16×11 Verified BC548A JHS 3 Series Distortion	JHS 3 Series Distortion	Fuzz	Dirtbox Layouts	—	3	—	23
	Triad Fuzz BC548A JHS 3 Series Distortion · 125B	JHS 3 Series Distortion	Fuzz	PedalPCB	125B	4	$10.00	27