Parts · Transistors

2N4250

Si PNP BJT.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
2N4250	250	40 V	100 mA	0.2 W	100 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC307B	240	45 V	100 mA	0.3 W	130 MHz	6
2SA493	200	40 V	50 mA	0.2 W	100 MHz	3
BC560B	240	45 V	100 mA	0.5 W	150 MHz	4
2SA1048GR	200	50 V	150 mA	0.2 W	80 MHz	2
2SA798	250	50 V	100 mA	0.4 W	50 MHz	1
2N5087	250	50 V	50 mA	0.31 W	40 MHz	171
2N3965	250	60 V	200 mA	0.36 W	50 MHz	3
2SA1335	200	120 V	100 mA	0.2 W	100 MHz	4

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SA901	250	40 V	100 mA	0.2 W	100 MHz
2SA906	250	40 V	100 mA	0.2 W	100 MHz
BCW61C	250	32 V	100 mA	0.25 W	100 MHz
2SA564A	250	45 V	50 mA	0.25 W	80 MHz
BCW68H	250	45 V	800 mA	0.35 W	100 MHz
BCW68RH	250	45 V	800 mA	0.35 W	100 MHz
BC204B	240	45 V	100 mA	0.3 W	100 MHz
BC261B	240	45 V	100 mA	0.3 W	100 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	SCI Prophet 600 082 · 2764 · 2N4250 · 311	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	312