Parts · Transistors

BC546B

Si NPN BJT TO-92 TH.7 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
BC546B	200	65 V	100 mA	0.5 W	150 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2N6428	200	50 V	200 mA	0.625 W	100 MHz	2
2SC1815Y	200	50 V	150 mA	0.4 W	80 MHz	3
BC182B	240	50 V	200 mA	0.3 W	120 MHz	3
2SC1852	160	50 V	1000 mA	0.625 W	100 MHz	1
2SC2240	200	120 V	100 mA	0.3 W	50 MHz	9
2SC2240GR	200	120 V	100 mA	0.3 W	50 MHz	3
2SD1616A	135	60 V	1000 mA	0.75 W	100 MHz	1
2SC2291	250	100 V	50 mA	0.4 W	50 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC846B-AU	200	65 V	100 mA	0.33 W
2SC945-GR	200	50 V	150 mA	0.4 W	150 MHz
2SC3381	200	80 V	100 mA	0.4 W	170 MHz
2SC5813	200	80 V	1500 mA	0.6 W	180 MHz
PN3417	180	50 V	500 mA	0.5 W
2SC2634	180	60 V	100 mA	0.4 W
PN3405	180	50 V	500 mA	0.56 W
BSW43B	180	60 V	200 mA	0.3 W	150 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Big Ear 2N3904 · 2N5087 · 4558 · BC546B Spaceman Effects WOW Signal · 1590BBS	Spaceman Effects WOW Signal	Fuzz	Dead End FX	1590BBS	5	$15.00	60
Black Effects Pedals Fuzzawe Vero15×13 Unverified BC546B · BC549B · MPSA13 Black Effects Pedals Fuzzawe	Black Effects Pedals Fuzzawe	Fuzz	Dirtbox Layouts	—	2	—	20
Moon LNDer Overdrive Vero19×17 Unverified BC546B · LND150 Moon LNDer Overdrive	Moon LNDer Overdrive	Overdrive	Dirtbox Layouts	—	4	—	24
Clay Jones OD BC546B · OPA2134	—	Overdrive	PCBWay: Glory to Ukraine	—	3	—	22
Clay Jones Overdrive / Black Market Overdrive BC546B · OPA2134 Clay Jones Overdrive	Clay Jones Overdrive	Overdrive	Revolution Deux	—	3	—	36
Clay Jones Overdrive Vero20×15 Verified BC546B · OPA2134 Clay Jones Overdrive	Clay Jones Overdrive	Overdrive	Tagboard Effects	—	3	—	23
T-Rex Mudhoney Vero21×12 Verified 2N5457 · BC546B · OP07CP T-Rex Mudhoney	T-Rex Mudhoney	Distortion	Tagboard Effects	—	3	—	29