Parts · Transistors

BC559

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
BC559	125	25 V	200 mA	0.3 W	75 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2SA1015Y	120	50 V	150 mA	0.4 W	80 MHz	2
BC560	110	45 V	100 mA	0.5 W	150 MHz	1
2N4403	100	40 V	600 mA	0.31 W	200 MHz	4
PN2907	100	40 V	600 mA	0.4 W	200 MHz	4
2N3906	100	40 V	200 mA	0.31 W	250 MHz	113
BC558	75	25 V	100 mA	0.5 W	75 MHz	1
BC557B	200	45 V	100 mA	0.5 W	75 MHz	1
2SA1048GR	200	50 V	150 mA	0.2 W	80 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC418A	125	25 V	100 mA	0.25 W	75 MHz
BC275A	125	25 V	100 mA	0.3 W	65 MHz
BC252	125	20 V	100 mA	0.3 W	80 MHz
BC253	125	20 V	100 mA	0.3 W	80 MHz
BC252A	120	25 V	100 mA	0.3 W	80 MHz
BC253A	120	25 V	100 mA	0.3 W	80 MHz
BC262	125	25 V	100 mA	0.3 W	100 MHz
BC262A	125	25 V	100 mA	0.3 W	100 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Serge ring modulator BC559 · CA3080A · TL071	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	5