Parts · Transistors

OC41

Ge PNP BJT TH.6 circuits use this part. Listed as: Germanium transistor; Germanium Transistor.

Substitutes Ge 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
OC41	35	16 V	50 mA	0.05 W	4 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
MP20A	50	20 V	300 mA	0.15 W	2 MHz	1
OC83N	40	20 V	1000 mA	0.22 W	1 MHz	1
OC42	70	15 V	50 mA	0.05 W	7 MHz	1
NKT275	30	15 V	250 mA	0.2 W	0.5 MHz	13
2N1307	60	15 V	300 mA	0.15 W	8 MHz	6
2N408	65	18 V	70 mA	0.15 W	6.7 MHz	5
GT402D	30	25 V	500 mA	0.6 W	1 MHz	2
MP41A	50	30 V	150 mA	0.15 W	1 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
ACY11	38	30 V	50 mA	0.05 W
ACY12	38	30 V	50 mA	0.05 W
2N1115	35	15 V	125 mA	0.15 W	4 MHz
ACY10	32	30 V	50 mA	0.05 W
2N799	40	12 V	100 mA	0.075 W	4 MHz
SFT227	35	24 V	250 mA	0.15 W	4 MHz
AC114	40	16 V	80 mA	0.11 W
2N800	30	12 V	400 mA	0.075 W	4 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
One Knob Tonebender MK1 Turret board2×6 OC41 Sola Sound Tone Bender MKI · 1590B	Sola Sound Tone Bender MKI	Fuzz	Amplified Parts	1590B	1	—	13
One Knob Tonebender MK2 Turret board2×6 OC41 Sola Sound Tone Bender MKII · 1590B	Sola Sound Tone Bender MKII	Fuzz	Amplified Parts	1590B	1	—	12
Rangemaster Turret board2×5 OC41 Dallas Arbiter Rangemaster · 1590B	Dallas Arbiter Rangemaster	Boost	Amplified Parts	1590B	1	—	9
Tonebender MK1 Turret board2×8 OC41 Sola Sound Tone Bender MKI	Sola Sound Tone Bender MKI	Fuzz	Amplified Parts	—	2	—	15
Tonebender MK2 Turret board2×10 OC41 Sola Sound Tone Bender MKII · 1590BB	Sola Sound Tone Bender MKII	Fuzz	Amplified Parts	1590BB	2	—	12
Tonebender MK3 Turret board2×10 OC41 Sola Sound Tone Bender Mk. III · 1590BB	Sola Sound Tone Bender Mk. III	Fuzz	Amplified Parts	1590BB	3	—	16