Parts · Transistors

2N2904A

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
2N2904A	40	60 V	600 mA	0.6 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC327	63	45 V	800 mA	0.5 W	60 MHz	3
MPS-U55	50	60 V	2000 mA	8 W	100 MHz	1
2N5401	60	150 V	600 mA	0.31 W	100 MHz	2
BD140	40	80 V	1000 mA	12 W	50 MHz	1
2N2905A	100	60 V	600 mA	0.6 W	200 MHz	1
2N2907A	100	60 V	600 mA	0.4 W	200 MHz	36
MPSA92	25	300 V	500 mA	0.625 W	50 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2N5795	40	60 V	600 mA	0.6 W	200 MHz
2N3485A	40	60 V	600 mA	0.4 W	200 MHz
PN2906A	40	60 V	600 mA	0.4 W	200 MHz
BFV86A	40	60 V	600 mA	0.36 W
2SA571	40	45 V	1000 mA	0.8 W	200 MHz
KSA707	40	45 V	700 mA	0.8 W
BFS98	40	60 V	1000 mA	0.5 W	150 MHz
BFS98K	40	60 V	1000 mA	0.5 W	150 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Stephen Douglas Leona V1 Vero16×15 Verified 2N2904A · 2N404A · MAX1044 · TC1044 Stephen Douglas Leona V1	Stephen Douglas Leona V1	Overdrive	Dirtbox Layouts	—	3	—	28