Parts · Transistors

MPS-U55

Si PNP BJT.1 circuit uses this part.

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
MPS-U55	50	60 V	2000 mA	8 W	100 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BD140	40	80 V	1000 mA	12 W	50 MHz	1
2SB596	40	80 V	4000 mA	30 W	3 MHz	1
2SB434	40	50 V	3000 mA	25 W	1 MHz	3
2SB586	3000	80 V	8000 mA	100 W		1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
MPS-U56	50	80 V	2000 mA	8 W	100 MHz
BC430A	50	60 V	1000 mA	6 W	100 MHz
SFT8200	50	80 V	10000 mA	10 W	100 MHz
BC430	50	45 V	1000 mA	6 W	100 MHz
2SA614	50	60 V	2000 mA	15 W	100 MHz
2N3634L	50	140 V	1000 mA	5 W
2N6406	50	60 V	2000 mA	12 W	50 MHz
2SA743	60	50 V	1000 mA	8 W	120 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Moog Minimoog 2N3392 · 2N3415 · 2N4058 · 2N4303	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	677