Parts · Transistors

GT310B

1 circuit uses 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
GT310B	60	10 V	10 mA	0.02 W	120 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
OC44	100	12 V	10 mA	0.083 W	8 MHz	3
NTE102	90	16 V	150 mA	0.15 W	2 MHz	1
MP41A	50	30 V	150 mA	0.15 W	1 MHz	1
NKT213	50	18 V	250 mA	0.2 W	0.5 MHz	1
2N508	120	16 V	200 mA	0.2 W	2 MHz	1
OC75	55	20 V	10 mA	0.125 W	0.1 MHz	3
NKT275	30	15 V	250 mA	0.2 W	0.5 MHz	3
OC71	30	20 V	10 mA	0.125 W	0.3 MHz	5

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2N1753	50	18 V	50 mA	0.03 W
SFT174	60	20 V	25 mA	0.1 W	125 MHz
ACY13	50	16 V	50 mA	0.05 W
2N1727	50	12 V	50 mA	0.06 W	100 MHz
2N267	60	12 V	10 mA	0.035 W	30 MHz
2N984	50	10 V	100 mA	0.06 W	175 MHz
2N501	70	12 V	50 mA	0.06 W	80 MHz
2N311	50	15 V	50 mA	0.075 W

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Slava Ukraine GT310B · KP103G · KP103L · KT315A	Ltava	Tremolo	PCB Guitar Mania	1590DD	8	€1.00 out	127