Parts · Transistors

2SB33

Ge PNP BJT TH.2 circuits use this part.

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
2SB33	80		50 mA	0.15 W	0.4 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2SB54	80	20 V	150 mA	0.15 W	0.5 MHz	5
2SB56	80	25 V	150 mA	0.15 W	0.5 MHz	1
ASY33	90	30 V	300 mA	0.15 W	0.5 MHz	1
2SB22	95	25 V	75 mA	0.17 W	0.4 MHz	2
2N270	70	12 V	150 mA	0.15 W	0.3 MHz	5
2G381	75	20 V	500 mA	0.25 W	1 MHz	5
SFT337	100	15 V	100 mA	0.15 W	1 MHz	3
2N527	80	30 V	500 mA	0.225 W	2 MHz	2

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
GT2694	80	15 V	50 mA	0.15 W
ACY25	75	30 V	50 mA	0.15 W
SFT153	80	12 V	150 mA	0.15 W	0.3 MHz
OC400	75	5 V	40 mA	0.11 W
GT2696	70	15 V	50 mA	0.15 W
2N1378	85	12 V	200 mA	0.25 W	0.4 MHz
2N1379	85	25 V	200 mA	0.25 W	0.4 MHz
NKT219	85	18 V	250 mA	0.2 W	0.5 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Nine Volt Nirvana Easy Face 2N3906 · 2SB33 Nine Volt Nirvana Easy Face	Nine Volt Nirvana Easy Face	Fuzz	Revolution Deux	—	3	—	12
	Easy Face with input cap blend Vero13×8 Verified 2N3906 · 2SB33 Easy Face with input cap blend	Easy Face with input cap blend	Fuzz	Tagboard Effects	—	3	—	14