Parts · Transistors
MMBFJ201
Si N-ch JFET SOT-23 SMD.20 circuits use this part.
Datasheet · from onsemi.com
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 |
|---|---|---|---|---|
| MMBFJ201 | 1.5 V | 1 mA | 40 V | 0.35 W |
Used on other boards here
| Part | Vgs max | Id max | Vds | Pd | Boards |
|---|---|---|---|---|---|
| PN4393 | 5 mA | 40 V | 0.36 W | 2 | |
| 2N5953 | 2.5 V | 5 mA | 30 V | 0.36 W | 1 |
| J202 | 4 V | 4.5 mA | 40 V | 0.625 W | 9 |
| PN4302 | 4 V | 5 mA | 30 V | 0.625 W | 1 |
| 2SK117 | 14 mA | 50 V | 0.3 W | 42 | |
| 2SK246 | 14 mA | 50 V | 0.3 W | 9 | |
| 2SK184 | 14 mA | 50 V | 0.2 W | 9 | |
| LS3954 | 4.5 V | 5 mA | 60 V | 0.4 W | 1 |
Closest by the numbers
| Part | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| 2N4867 | 2 V | 1.2 mA | 40 V | 0.3 W |
| 2SK2091 | 5 mA | 30 V | 0.15 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 |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Tonsorium J201/MMBFJ201 · PN2222A Fairfield Circuitry Barbershop V2 · 1590B | Fairfield Circuitry Barbershop V2 | Overdrive | Effects Layouts | 1590B | 3 | $6.00 out | 30 | |
| AMZ Mini Booster SMD Perfboard Verified MMBFJ201 AMZ Mini-Booster · 1590A | AMZ Mini-Booster | Boost | Effects Layouts (blog) | 1590A | 1 | — | 14 | |
| 2.5 Revs 2N3904 · J201 / MMBFJ201 Fairfield Circuitry ~900 Fuzz · 1590B | Fairfield Circuitry ~900 Fuzz | Fuzz | Fuzz Dog | 1590B | 4 | £36.00 | 38 | |
| Chunky Rotter J201/MMBFJ201 Paul Cochrane Fat Bastard · 1590B | Paul Cochrane Fat Bastard | Boost | Fuzz Dog | 1590B | 4 | £28.80 | 28 | |
| FuzzPup Hey Sucker J201/MMBFJ201 · LM386 · LM386-N1 Greer Amps Sucker Punch · 1590A | Greer Amps Sucker Punch | Distortion | Fuzz Dog | 1590A | 3 | £30.00 | 17 | |
| May Queen 2N3904 · 2N5088 · J201/MMBFJ201 Run Off Groove May Queen · 1590B | Run Off Groove May Queen | Overdrive | Fuzz Dog | 1590B | 1 | £26.40 | 23 | |
| Mr Creosote J201/MMBFJ201 · PNP GERMANIUM Wren and Cuff Phat Phuk B · 1590B | Wren and Cuff Phat Phuk B | Boost | Fuzz Dog | 1590B | 2 | £31.20 | 19 | |
| Pixel Drive J201/MMBFJ201 Wampler Plexi-Drive · 1590B | Wampler Plexi-Drive | Overdrive | Fuzz Dog | 1590B | 3 | £38.40 | 30 | |
| Punch In The Face 2N5088 · J201 / MMBFJ201 Escobedo Punch-In-The-Face · 1590B | Escobedo Punch-In-The-Face | Fuzz | Fuzz Dog | 1590B | 2 | £28.80 | 13 | |
| Splitter-Blend J201/MMBFJ201 Run Off Groove Splitter-Blend · 1590BB | Run Off Groove Splitter-Blend | Utility | Fuzz Dog | 1590BB | 1 | £36.00 | 28 | |
| Tone Mallet 1458 · J201/MMBFJ201 Rockett 10 Ton Hammer · 1590B | Rockett 10 Ton Hammer | Overdrive | Fuzz Dog | 1590B | 4 | £33.60 | 43 | |
| Wiz CV7351 · J201 / MMBFJ201 Castledine The Wizard · 1590B | Castledine The Wizard | Overdrive | Fuzz Dog | 1590B | 2 | £43.20 | 41 | |
| Simple JFET Buffer (SMD) MMBFJ201 125B | — | Utility | PedalPCB | 125B | — | $0.50 | 6 | |
| GUMA-Antique 78L05 · BC547B · CD4049UB · MMBFJ201 Mad Professor Sweet Honey Overdrive · 125B | Mad Professor Sweet Honey Overdrive | Overdrive | Schalltechnik_04 | 125B | 4 | — out | 36 | |
| GUMA-Drive 78L05 · BC547B · CD4049UB · MMBFJ201 Mad Professor Sweet Honey Overdrive · 125B | Mad Professor Sweet Honey Overdrive | Overdrive | Schalltechnik_04 | 125B | 3 | — out | 40 | |
| Riptide Spring Reverb True Analog Spring Reverb MMBFJ112 · MMBFJ201 · NE5532 · NE5532N 1590XX | — | Reverb | Scientific Guitarist | 1590XX | 4 | — | 66 | |
| Torivor Preamp A Dual Channel LM386 Amp in a Box 2N5457 · LM386 · MMBFJ201 1590BB | — | Preamp / Amp-in-a-box | Scientific Guitarist | 1590BB | 7 | — | 58 | |
| DayJ 7660S · ICL7660S · MMBFJ201 · TL072 Limetone Audio Jackal · 1590BB2 | Limetone Audio Jackal | Distortion | Sheepylove | 1590BB2 | 10 | €15.00 | 87 | |
| Perplexed MMBFJ201 Wampler Plexi Tone | Wampler Plexi Tone | Distortion | Sheepylove | — | 6 | €10.00 | 30 | |
| Stein Adler MMBFJ201 Celestial Engineering Colombo Plexi Breed with slight mods | Celestial Engineering Colombo Plexi Breed with slight mods | Overdrive | Sheepylove | — | 7 | €10.00 | 49 |