Parts · Transistors

J177

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
J177	2.5 V	20 mA	30 V	0.35 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
2N5116		25 mA	30 V	0.5 W	2
J175	6 V	60 mA	30 V	0.35 W	2

Closest by the numbers

Part	Vgs max	Id max	Vds	Pd
2SJ109		20 mA	30 V	0.2 W
2SJ108		20 mA	25 V	0.2 W
2SJ74		20 mA	25 V	0.4 W
2SJ103		14 mA	50 V	0.3 W
2SJ105		14 mA	50 V	0.2 W
2SJ106		14 mA	50 V	0.15 W
2SJ75		20 mA	25 V	0.4 W
2SJ164	3.5 V	20 mA	65 V	0.3 W

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Fuzz Phase 2N5089 · J177	Vintage Soviet schematics,	Phaser	PCB Guitar Mania	1590BB	7	€11.90 out	80