Parts · Transistors

BC550

10 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
BC550	240	45 V	100 mA	0.5 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC547B	200	45 V	100 mA	0.5 W	200 MHz	11
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
2N6428	200	50 V	200 mA	0.625 W	100 MHz	2
2SC1815-GR	200	50 V	150 mA	0.4 W	80 MHz	5
2N5210	250	50 V	50 mA	0.31 W	30 MHz	5
2N6429	400	45 V	200 mA	0.625 W	100 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC524	240	45 V	100 mA	0.625 W
BC524B	240	45 V	100 mA	0.625 W
BCW66KH	250	45 V	800 mA	0.5 W	170 MHz
2N6016	240	60 V	800 mA	0.5 W	240 MHz
2SC6033	250	50 V	2500 mA	0.625 W
2N6539	250	40 V	200 mA	0.625 W	200 MHz
KSP8097	250	40 V	200 mA	0.625 W
BSX79B	250	45 V	100 mA	0.345 W	200 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
7 of Dwarves Auto Wah 2N5457 · 78L05 · BC550 · LM13700	Snow White Autowah	Wah / Envelope	Fuzz Dog	1590B	4	£37.20	58
Ultra-Fk Fuzz 2N5088 · BC550	Megalith	Fuzz	Fuzz Dog	1590BB	2	£45.60	32
Sabotage Drive BC550	Best PCB for Sabbath	Overdrive	GuitarPCB	—	3	$9.95 out	52
Swah v5 2N5457 · 78L05 · BC550 · LM13700	—	Wah / Envelope	GuitarPCB	—	3	$9.95 out	57
Scuba Muff BC550	EHX Big Muff	Fuzz	JMK PCBs	—	3	$6.00	59
Cosmos Delay SMD 2N5457 · BC550 · PT2399 · TL072	Sagan Delay	Delay	PCB Guitar Mania	—	1	€24.90 out	34
Love Cheese BC549C · BC550 · TL072	Lovetone Big Cheese	Fuzz	PCB Guitar Mania	125B	4	€11.90 out	48
Zephyr Stereo Chorus BC550 · MN3102 · MN3207 · TL072	Arion SCH-1 Stereo Chorus	Vibrato / Chorus	PCB Guitar Mania	—	4	€14.90 out	109
Poison Apple Auto-Wah 2N5457 · BC550 · L78L05 · LM13700	Mad Professor Snow White AutoWah	EQ / Filter	PedalPCB	125B	4	$12.00	58
XB-MB Preamp BC550 · JRC4558	Xotic BB Preamp Mid Boost	Fuzz	PedalPCB	125B	5	$12.00	53