Parts · Transistors

MPS4124

1 circuit uses 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
MPS4124	120	25 V	200 mA	0.625 W	170 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC549	110	30 V	100 mA	0.5 W	200 MHz	6
BC548	110	30 V	100 mA	0.5 W	300 MHz	4
ZTX649	100	25 V	2000 mA	1 W	150 MHz	1
BC546A	110	65 V	100 mA	0.5 W	150 MHz	2
2N2222	100	30 V	800 mA	0.5 W	250 MHz	51
2SC1815-Y	120	50 V	150 mA	0.4 W	80 MHz	1
BC547	110	50 V	100 mA	0.5 W	300 MHz	2
2N6076	100	25 V	100 mA	0.36 W	100 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SC1959Y	120	30 V	500 mA	0.5 W	150 MHz
BCP2098	120	20 V	5000 mA	0.5 W	150 MHz
BC238A-92	125	20 V	200 mA	0.5 W
BCX58-7	120	32 V	200 mA	0.6 W	125 MHz
BC585	120	20 V	100 mA	0.35 W
2SC3666Y	120	30 V	1000 mA	1 W	150 MHz
2SC3266	120	20 V	2000 mA	0.75 W	120 MHz
2SC3266Y	120	20 V	2000 mA	0.75 W	120 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	The Creamery Compressor J201 · KA4558 · MPS4124 · THAT2159	DOD FX84 Milk Box	Compressor	PedalPCB	125B	4	$12.00	75