Parts · Transistors

MPS3704

2 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
MPS3704	300	30 V	800 mA	0.625 W	100 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
ECG123A	200	40 V	800 mA	0.5 W	300 MHz	1
2SD1616A	135	60 V	1000 mA	0.75 W	100 MHz	1
MPSA05G	100	60 V	500 mA	0.63 W	100 MHz	2
2N3700	100	80 V	1000 mA	0.5 W	100 MHz	3
ZTX649	100	25 V	2000 mA	1 W	150 MHz	1
2N1711	100	50 V	600 mA	0.8 W	70 MHz	5
2N2222	100	30 V	800 mA	0.5 W	250 MHz	51
BC337	100	45 V	800 mA	0.36 W	60 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SC2982C	300	30 V	2000 mA	0.5 W	150 MHz
2SC5976	250	30 V	3000 mA	0.625 W
BCX73-40	250	32 V	1000 mA	0.625 W	100 MHz
2SC6134	250	30 V	3000 mA	0.5 W
BCP194A	300	40 V	1000 mA	1 W	150 MHz
2SC6062	250	30 V	5000 mA	0.8 W
BCW77-25	250	32 V	800 mA	0.8 W	100 MHz
BCW73-40	250	32 V	800 mA	0.45 W	100 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Red Spike MPS3704	Spires Red Channel / Dream Crusher	Fuzz	Fuzz Dog	1590B	3	£26.40	20
	Loft Fuzz (Red) MPS3704	EQD Spires (Red Channel)	Fuzz	PedalPCB	125B	2	$8.00	22