Parts · Transistors

2N3391

Si NPN BJT.9 circuits use this part.

Datasheet · archived copy from Fairchild; the part is discontinued and the maker no longer publishes it

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
2N3391	250	25 V	100 mA	0.2 W	70 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2SC539	250	25 V	50 mA	0.3 W	100 MHz	3
BC169B	240	20 V	100 mA	0.3 W	85 MHz	6
BC169	240	20 V	100 mA	0.3 W	85 MHz	1
BC113	200	25 V	50 mA	0.2 W	60 MHz	1
2SC1335	250	30 V	100 mA	0.2 W	230 MHz	2
BC184	240	30 V	200 mA	0.3 W	150 MHz	15
BC183B	240	30 V	200 mA	0.3 W	150 MHz	3
BC184B	240	30 V	200 mA	0.3 W	150 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SC1361	250	25 V	200 mA	0.25 W	70 MHz
2SC1363	250	25 V	200 mA	0.25 W	70 MHz
2SC1917	250	20 V	100 mA	0.2 W	75 MHz
BSW88B	250	30 V	100 mA	0.3 W
BSW89B	250	30 V	100 mA	0.3 W
BC278B	240	25 V	100 mA	0.3 W	75 MHz
2SC1916	250	50 V	100 mA	0.2 W	75 MHz
BCW65CLT1G	250	32 V	800 mA	0.225 W	100 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Apocalypse Audio Four Horsemen Overdrive Vero20×16 Unverified 2N1307 · 2N3391 · 2N5457 · BS170 Apocalypse Audio Four Horsemen Overdrive	Apocalypse Audio Four Horsemen Overdrive	Distortion	Dirtbox Layouts	—	3	—	35
Fender Blender 3 knob Vero15×15 Verified 2N3391 · 2N3391A · 2N3393 · 2N5952 Fender Blender 3 knob	Fender Blender 3 knob	Boost	Dirtbox Layouts	—	2	—	27
Apocalypse Audio Four Horsemen Perfboard Verified 2N1307 · 2N3391 · 2N5457 · BS170 Apocalypse Audio Four Horsemen Overdrive · 1590B	Apocalypse Audio Four Horsemen Overdrive	Overdrive	Effects Layouts (blog)	1590B	3	—	35
Fender Blender 2N3391 · 2N3391A Fender Blender	Fender Blender	Utility	Experimentalists Anonymous	—	—	—	34
Heathkit TA-28 2N3391 · X29A829	—	Fuzz	Experimentalists Anonymous	—	—	—	17
Paia 4720a 2N2712 · 2N3391 · 2N4871 · 2N5129	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	84
Apocalypse Audio 4 Horsemen Vero18×17 Unverified 2N1307 · 2N3391 · 2N5457 · BS170 Apocalypse Audio 4 Horsemen	Apocalypse Audio 4 Horsemen	Fuzz	Tagboard Effects	—	3	—	34
Devi Ever Improbability Drive Vero20×13 Verified 2N2222 · 2N2907 · 2N3391 · MPSA18 Devi Ever Improbability Drive	Devi Ever Improbability Drive	Fuzz	Tagboard Effects	—	2	—	23
Fender Blender Vero21×17 Verified 2N3391 · 2N3391A Fender Blender	Fender Blender	Fuzz	Tagboard Effects	—	4	—	35