Parts · Transistors

2N4126

Si PNP BJT TO-92 TH.5 circuits use this part.

Datasheet · from my.centralsemi.com

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
2N4126	120	25 V	200 mA	0.31 W	250 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2N3906	100	40 V	200 mA	0.31 W	250 MHz	324
MPS6519	150	25 V	100 mA	0.31 W	200 MHz	1
BC309	125	20 V	100 mA	0.3 W	100 MHz	3
2N4403	100	40 V	600 mA	0.31 W	200 MHz	11
BC559	125	25 V	200 mA	0.3 W	75 MHz	4
PN2907	100	40 V	600 mA	0.4 W	200 MHz	5
TIS93	100	40 V	400 mA	0.625 W		4
BC560	110	45 V	100 mA	0.5 W	150 MHz	8

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SA819	120	25 V	300 mA	0.3 W	240 MHz
BC586	120	20 V	100 mA	0.35 W
2SA1585	120	20 V	2000 mA	0.35 W	240 MHz
BCAP78A	125	25 V	100 mA	0.3 W	200 MHz
2SA854S	120	32 V	500 mA	0.3 W	200 MHz
BCW31CSM	120	32 V	100 mA	0.35 W	300 MHz
BCW32CSM	120	32 V	100 mA	0.35 W	300 MHz
2N5378	120	30 V	500 mA	0.36 W	200 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
MXR Analog Delay 1 1458 · 2N4126 · 340L12 · 4013 MXR Analog Delay	MXR Analog Delay	Delay	Experimentalists Anonymous	—	3	—	119
MXR Analog Delay 2 2N4126 · 340LA12 · 4001 · 4013 MXR Analog Delay	MXR Analog Delay	Delay	Experimentalists Anonymous	—	—	—	119
MXR Analog Delay 3 2N4126 · 340T12 · 4558 · CD4001 MXR Analog Delay	MXR Analog Delay	Delay	Experimentalists Anonymous	—	3	—	121
ROSS Stereo Delay 2N4126 · 2SC1849 · 4013B · 4016A Ross Stereo Delay	Ross Stereo Delay	Delay	Experimentalists Anonymous	—	—	—	54
ROSS Stereo Delay 2 2N4126 · 2SC1849 · 4013 · 4016 Ross Stereo Delay	Ross Stereo Delay	Delay	Experimentalists Anonymous	—	5	—	135