Parts · Transistors

2SB175

Ge PNP BJT TH.3 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
2SB175	55		100 mA	0.125 W	0.7 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2G374	60	25 V	100 mA	0.15 W	1 MHz	1
MP41A	50	30 V	150 mA	0.15 W	1 MHz	2
NKT213	50	18 V	250 mA	0.2 W	0.5 MHz	12
2N1382	50	25 V	200 mA	0.25 W	1 MHz	1
ACY41	50	18 V	500 mA	0.26 W	1 MHz	5
2N526	65	30 V	500 mA	0.225 W	1 MHz	1
MP20A	50	20 V	300 mA	0.15 W	2 MHz	1
AC125	50	12 V	100 mA	0.5 W	1 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
ACY14	54	30 V	50 mA	0.15 W
ACY15	54	30 V	50 mA	0.15 W
AC154	55	16 V	800 mA	0.2 W	0.7 MHz
AC156	55	16 V	80 mA	0.2 W	0.7 MHz
AC521	55	20 V	200 mA	0.16 W	1 MHz
GT2883	50	6 V	50 mA	0.15 W
2N466	56	20 V	100 mA	0.2 W	0.6 MHz
2N1415	55	25 V	500 mA	0.2 W	0.9 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Olson New Sound 1.5V 2SB175	—	Distortion	Experimentalists Anonymous	—	—	—	10
Apollo Treble Booster 2SB175 Apollo Treble Booster	Apollo Treble Booster	Boost	Revolution Deux	—	1	—	11
Orange / Vox / Apollo Treble/Bass Booster 2SB175 Orange Vox / Apollo Treble/Bass Booster	Orange Vox / Apollo Treble/Bass Booster	Boost	Revolution Deux	—	1	—	13