Parts · Transistors

2N5172

4 circuits use this part. Listed as: BJT transistor, NPN TO-92.

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
2N5172	100	25 V	100 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	24
2N2222	100	30 V	800 mA	0.5 W	250 MHz	51
2N6076	100	25 V	100 mA	0.36 W	100 MHz	1
2N2924	100	25 V	100 mA	0.36 W	100 MHz	1
BC549	110	30 V	100 mA	0.5 W	200 MHz	6
BC107	110	45 V	100 mA	0.3 W	150 MHz	4
ZTX649	100	25 V	2000 mA	1 W	150 MHz	1
BC183A	120	30 V	200 mA	0.3 W	150 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2N4970	100	30 V	500 mA	0.2 W	200 MHz
BSX81	100	30 V	100 mA	0.23 W	200 MHz
2SC454	100	30 V	100 mA	0.2 W	230 MHz
2SC458	100	30 V	100 mA	0.2 W	230 MHz
2SC458B	100	30 V	100 mA	0.2 W	230 MHz
BC508	100	40 V	180 mA	0.2 W	200 MHz
BFV11	100	30 V	800 mA	0.15 W	200 MHz
BFV53	100	30 V	800 mA	0.15 W

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
ARP 4012 LPF 2N5172 · 2N6076 · AD3958	—	Other	Experimentalists Anonymous	—	1	—	37
Plexi Beast 2N5088 · 2N5172	Animal Pedals Major OD	Overdrive	Fuzz Dog	1590B	3	£28.80	36
Fuzz Stain 2N5172	Sam Ash Fuzz-Stainer	Fuzz	PedalPCB	125B	4	$8.00	28
Old Fashioned 2N5088 · 2N5172	Animals Pedal Major Overdrive	Distortion	Sheepylove	—	4	€10.00	36