Parts · Transistors

KP103L

1 circuit uses this part.

Substitutes P-channel JFET

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	Vgs max	Id max	Vds	Pd
KP103L	6 V	6.6 mA	12 V	0.066 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
2N3820	20 V	15 mA	20 V	0.35 W	1
2N5116		25 mA	30 V	0.5 W	2
J177	2.5 V	20 mA	30 V	0.35 W	1
J175	6 V	60 mA	30 V	0.35 W	2

Closest by the numbers

Part	Vgs max	Id max	Vds	Pd
2N2608	6 V	5 mA	30 V	0.3 W
2N2609	6 V	10 mA	30 V	0.3 W
2N5461	4.5 V	9 mA	40 V	0.35 W
2N5460	4 V	5 mA	40 V	0.35 W
2N3994	5.5 V	10 mA	25 V	0.3 W
2N5462	6 V	16 mA	40 V	0.35 W
2SJ125		10 mA	50 V	0.15 W
2SJ145		10 mA	50 V	0.15 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