Parts · Transistors

MMBT6429

Si NPN BJT SOT-23 SMD.1 circuit uses this part.

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
MMBT6429	500	45 V	200 mA	0.3 W	100 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2SC1815BL	500	50 V	150 mA	0.4 W	80 MHz	4
2SC1583	500	50 V	100 mA	0.4 W	150 MHz	3
2N5828	400	40 V	100 mA	0.36 W	90 MHz	1
BC550C	420	45 V	100 mA	0.5 W	150 MHz	81
BC850C	520	45 V	100 mA	0.2 W	300 MHz	1
BC847C	520	45 V	100 mA	0.2 W	300 MHz	1
2SC1685	650	50 V	100 mA	0.25 W	75 MHz	1
BC547C	420	45 V	100 mA	0.5 W	200 MHz	18

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC171C	450	45 V	100 mA	0.3 W	100 MHz
MPSA18RLRAG	500	45 V	200 mA	0.63 W	100 MHz
MPSA18RLRMG	500	45 V	200 mA	0.63 W	100 MHz
2SC1736	500	50 V	100 mA	0.5 W	75 MHz
2SC1737	500	35 V	100 mA	0.5 W	75 MHz
2SC1738	500	35 V	100 mA	0.5 W	75 MHz
BC107C	450	45 V	100 mA	0.3 W	150 MHz
BC209C	450	45 V	100 mA	0.3 W	150 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Keeley Oxblood Vero21×24 Verified 1044 · J201 · MMBT6429 · NE5532 Keeley Oxblood	Keeley Oxblood	Overdrive	Tagboard Effects	—	3	—	33