Parts · Transistors

J201/MMBFJ201

8 circuits use this part.

Substitutes N-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
J201	1.5 V	1 mA	40 V	0.625 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
PN4393		5 mA	40 V	0.36 W	1
J202	4 V	4.5 mA	40 V	0.625 W	2
2SK246		14 mA	50 V	0.3 W	2
2N5952	3 V	8 mA	30 V	0.36 W	14
PF5102	1.6 V	20 mA	40 V	0.625 W	14

Closest by the numbers

Part	Vgs max	Id max	Vds	Pd
2N4867	2 V	1.2 mA	40 V	0.3 W
2N4868	3 V	3 mA	40 V	0.3 W
2N5902	4.6 V	0.5 mA	40 V	0.5 W
2N5903	4.6 V	0.5 mA	40 V	0.5 W
2N5904	4.6 V	0.5 mA	40 V	0.5 W
2N5905	4.6 V	0.5 mA	40 V	0.5 W
2N5906	4.6 V	0.5 mA	40 V	0.5 W
2N5907	4.6 V	0.5 mA	40 V	0.5 W

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Tonsorium J201/MMBFJ201 · PN2222A	Fairfield Circuitry Barbershop V2	Overdrive	Effects Layouts	1590B	3	$6.00 out	30
Chunky Rotter J201/MMBFJ201	Paul Cochrane Fat Bastard	Boost	Fuzz Dog	1590B	4	£28.80	28
FuzzPup Hey Sucker J201/MMBFJ201 · LM386-N1	Sucker Punch	Distortion	Fuzz Dog	1590A	1	£30.00	15
May Queen 2N3904 · 2N5088 · J201/MMBFJ201	RunOffGroove May Queen	Overdrive	Fuzz Dog	1590B	2	£26.40	23
Mr Creosote J201/MMBFJ201 · PNP GERMANIUM	Phat Phuk B	Boost	Fuzz Dog	1590B	2	£31.20	19
Pixel Drive J201/MMBFJ201	Plexi Drive	Overdrive	Fuzz Dog	1590B	3	£38.40	26
Splitter-Blend J201/MMBFJ201	RunOffGroove Splitter-Blend	Utility	Fuzz Dog	1590BB	1	£36.00	27
Tone Mallet 1458 · J201/MMBFJ201	Rockett 10 Ton Hammer	Boost	Fuzz Dog	1590B	4	£33.60	43