Parts · Transistors

BC559B

Si PNP BJT TO-92 TH.1 circuit uses this part.

Substitutes Si PNP 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
BC559B	240	25 V	100 mA	0.5 W	75 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC560B	240	45 V	100 mA	0.5 W	150 MHz	4
BC557B	200	45 V	100 mA	0.5 W	75 MHz	6
2SA798	250	50 V	100 mA	0.4 W	50 MHz	1
BC307B	240	45 V	100 mA	0.3 W	130 MHz	6
2N3965	250	60 V	200 mA	0.36 W	50 MHz	3
2N5087	250	50 V	50 mA	0.31 W	40 MHz	171
BC178B	180	25 V	200 mA	0.3 W	100 MHz	1
BC558C	420	25 V	100 mA	0.5 W	75 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC558B	240	25 V	100 mA	0.5 W	75 MHz
BC252B	240	25 V	100 mA	0.3 W	80 MHz
BC253B	240	25 V	100 mA	0.3 W	80 MHz
BC418B	240	25 V	100 mA	0.25 W	75 MHz
BC275B	240	25 V	100 mA	0.3 W	65 MHz
2SA550	250	25 V	100 mA	0.3 W	75 MHz
BC370B	240	20 V	1000 mA	0.375 W	90 MHz
BC406	250	30 V	150 mA	0.35 W	75 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Dunlop JHF-3 Band of Gypsies Fuzz Vero17×12 Verified 2N3904 · BC559B Dunlop JHF-3 Band of Gypsies Fuzz	Dunlop JHF-3 Band of Gypsies Fuzz	Fuzz	Dirtbox Layouts	—	2	—	27