Parts · Transistors

BC548

Si NPN BJT TO-92 TH.13 circuits use this part.

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
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	34
BC549	110	30 V	100 mA	0.5 W	200 MHz	40
2N2222	100	30 V	800 mA	0.5 W	250 MHz	129
BC547A	110	45 V	100 mA	0.5 W	200 MHz	4
BC546	110	80 V	100 mA	0.5 W	300 MHz	4
TIS92	100	40 V	400 mA	0.625 W		4
2N4124	120	25 V	200 mA	0.31 W	300 MHz	14
2N2219	100	30 V	800 mA	0.8 W	250 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
Jext Telez White Pedal Vero21×21 Verified 2N4125 · BC548 Jext Telez White Pedal	Jext Telez White Pedal	Distortion	Dirtbox Layouts	—	4	—	34
T-Rex Mudhouny + Green Ringer Vero26×22 Verified 2N5087 · 2N5089 · 2N5458 · BC548 T-Rex Mudhouny + Green Ringer	T-Rex Mudhouny + Green Ringer	Distortion	Dirtbox Layouts	—	4	—	41
Jext Telez White Pedal Perfboard Verified 2N4125 · BC548 Jext Telez White Pedal · 125B	Jext Telez White Pedal	Fuzz	Effects Layouts (blog)	125B	4	—	39
MXR Flanger 4013 · 4558 · BC547 · BC548 MXR Flanger	MXR Flanger	Flanger	Experimentalists Anonymous	—	4	—	47
Milky Fuzz 2N3906 · BC548 JT White Pedal · 1590B	JT White Pedal	Fuzz	Fuzz Dog	1590B	4	£43.20	49
Whiteboard 2N4125 · BC548 Jext Telez White Pedal · 125B	Jext Telez White Pedal	Fuzz	PCB Guitar Mania	125B	4	€11.90 out	52
Conqueror Fuzz 2N4125 · BC548 Jext Telez White Pedal · 125B	Jext Telez White Pedal	Fuzz	PedalPCB	125B	5	$12.00	51
ShamWah! BC548 Vertex Axis Wah	Vertex Axis Wah	EQ / Filter	PedalPCB	—	2	$15.00	32
Fred Briggs Octave Ringmod Fuzzer (ORF) BC548 · BC557 · J201 · LF351 Fred Briggs Octave Ringmod Fuzzer	Fred Briggs Octave Ringmod Fuzzer	Fuzz	Revolution Deux	—	5	—	27
Kill Box Multi-Mode Kill Switch Box 78L05 · ATTINY84-20PU · BC548 125B	—	Utility	Scientific Guitarist	125B	—	—	52
Wobble Box The Accidental Chorus/Vibrato 7805 · BC548 · LM7805 · TL072	—	Vibrato / Chorus	Scientific Guitarist	—	3	—	44
Jext Telez White Pedal Vero28×17 Verified 2N4125 · BC548 Jext Telez White Pedal	Jext Telez White Pedal	Preamp / Amp-in-a-box	Tagboard Effects	—	4	—	35
Vertex Axis Wah / BBE Ben Wah Vero Verified BC548 Vertex Axis Wah	Vertex Axis Wah	Wah / Envelope	Tagboard Effects	—	2	—	24