Parts · Transistors

2N3905

Si PNP BJT TO-92 TH.6 circuits use this part.

Datasheet · from onsemi.com

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
2N3905	50	40 V	200 mA	0.31 W	200 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC212L	50	50 V	200 mA	0.3 W	200 MHz	1
2N4125	50	30 V	200 mA	0.31 W	200 MHz	18
2N4402	50	40 V	600 mA	0.31 W	150 MHz	4
MPSA65	50	30 V	300 mA	0.625 W	100 MHz	2
BC213L	70	30 V	200 mA	0.3 W	200 MHz	1
2N2907	35	40 V	600 mA	0.4 W	200 MHz	38
2N2904A	40	60 V	600 mA	0.6 W	200 MHz	1
PN200	40	35 V	500 mA	0.625 W	150 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2N5382	50	40 V	200 mA	0.36 W	200 MHz
BC291	50	40 V	100 mA	0.36 W
2SA1518	50	50 V	500 mA	0.3 W	200 MHz
2SA1519	50	50 V	500 mA	0.3 W	200 MHz
2SA1520	50	50 V	500 mA	0.3 W	200 MHz
2SA1521	50	50 V	500 mA	0.3 W	200 MHz
2SA1526	50	50 V	500 mA	0.3 W	200 MHz
2SA1527	50	50 V	500 mA	0.3 W	200 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Oberheim 2 Voice Keyboard 2N3905 · 2N4391 · 2N5172 · 536	—	Ring Mod / Synth	Experimentalists Anonymous	—	2	—	56
Oberheim Mini Sequencer 1458 · 2N3905 · 2N4302 · 2N5172	—	Ring Mod / Synth	Experimentalists Anonymous	—	1	—	154
Oberheim Mini-Sequencer 1458 · 2N3905 · 2N4302 · 2N5172	—	Ring Mod / Synth	Experimentalists Anonymous	—	1	—	169
Oberheim OB8 1458 · 2N3905 · 3080 · 40109	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	688
Oberheim SBX 2N3905 · 2N4302 · 3080 · 3086	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	88
Oberheim SEM-1A 2N3638A · 2N3905 · 2N4302 · 2N5172	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	373