Parts · Transistors

2N4970

Si NPN BJT.1 circuit uses this part.

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
2N4970	100	30 V	500 mA	0.2 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2N4401	100	40 V	600 mA	0.31 W	250 MHz	52
2N2222	100	30 V	800 mA	0.5 W	250 MHz	129
TIS92	100	40 V	400 mA	0.625 W		4
2N2219	100	30 V	800 mA	0.8 W	250 MHz	2
S8050	120	25 V	500 mA	0.3 W	150 MHz	1
ZTX649	100	25 V	2000 mA	1 W	150 MHz	2
2N3569	100	40 V	500 mA	0.3 W	60 MHz	3
BC337	100	45 V	800 mA	0.36 W	60 MHz	25

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BFV11	100	30 V	800 mA	0.15 W	200 MHz
BFV53	100	30 V	800 mA	0.15 W
2N4437	100	30 V	500 mA	0.2 W	250 MHz
2SC933	100	30 V	300 mA	0.2 W	250 MHz
2N5736	100	30 V	300 mA	0.3 W	200 MHz
2SC2618C	100	35 V	500 mA	0.15 W
BCX19L	100	45 V	500 mA	0.225 W
BCX19LT1G	100	45 V	500 mA	0.225 W

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Earthquaker Devices Erupter Vero17×11 Verified 2N4970 · PF5102 EarthQuaker Devices Erupter	EarthQuaker Devices Erupter	Fuzz	Dirtbox Layouts	—	2	—	21