Parts · Transistors
J112
Si N-ch JFET TO-92 TH.24 circuits use this part. Listed as: Transistor J112; TO-92 JFET Transistor; JFET transistor, N-channel; JFET, N-channel; JFET, N-channel, TO-92.
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 |
|---|---|---|---|---|
| J112 | 50 mA | 35 V | 0.4 W |
Used on other boards here
| Part | Vgs max | Id max | Vds | Pd | Boards |
|---|---|---|---|---|---|
| J113 | 50 mA | 35 V | 0.4 W | 88 | |
| J111 | 50 mA | 35 V | 0.4 W | 17 | |
| 2N4859A | 10 V | 50 mA | 30 V | 0.36 W | 2 |
| 2N3956 | 4 V | 50 mA | 50 V | 0.25 W | 1 |
| 2N3954 | 4 V | 50 mA | 50 V | 0.25 W | 1 |
| SST201 | 50 mA | 40 V | 0.36 W | 1 | |
| BF244A | 30 V | 50 mA | 30 V | 0.35 W | 8 |
| PF5102 | 1.6 V | 20 mA | 40 V | 0.625 W | 40 |
Closest by the numbers
| Part | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| PN4117 | 1.8 V | 50 mA | 40 V | 0.3 W |
| PN4118 | 3 V | 50 mA | 40 V | 0.3 W |
| PN4119 | 6 V | 50 mA | 40 V | 0.3 W |
| 2N5638 | 50 mA | 30 V | 0.35 W | |
| 2N4856 | 10 V | 50 mA | 40 V | 0.36 W |
| 2SK162 | 50 mA | 40 V | 0.4 W | |
| BSR56 | 50 mA | 40 V | 0.25 W | |
| 2N3921 | 2.7 V | 50 mA | 50 V | 0.3 W |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| L5 Preamp 2N3904 · 2N3906 · 4558 · J112 Lab Series L5 · 1590XX | Lab Series L5 | Preamp / Amp-in-a-box | Aion FX | 1590XX | 7 | $22.00 | 209 | |
| Stratus Deluxe Overdrive 2N5088 · 4558 · J112 · JRC4558D Boss SD-1 · 125B | Boss SD-1 | Overdrive | Aion FX | 125B | 5 | $12.50 | 78 | |
| Acorn Amplifiers ADHD Synth Fuzz Vero20×15 Verified 9203 · J112 · LM386 · LM386-M1 Acorn Amplifiers ADHD Synth Fuzz | Acorn Amplifiers ADHD Synth Fuzz | Fuzz | Dirtbox Layouts | — | 5 | — | 22 | |
| BJFe Universal Reverb V2 / Capitalist Death Cult Actual G*ddamned Springs Vero20×20 Verified 555 · BC337 · BC549C · J112 BJFe Universal Reverb V2 / Capitalist Death Cult Actual G*ddamned Springs | BJFe Universal Reverb V2 / Capitalist Death Cult Actual G*ddamned Springs | Reverb | Dirtbox Layouts | — | 4 | — | 46 | |
| Little Jim Vero18×13 Verified BS170 · J112 Little Jim | Little Jim | Distortion | Dirtbox Layouts | — | 3 | — | 20 | |
| PedalPCB / Chuck D. Bones Celestial Overdrive Vero21×21 Unverified J112 · MP38A · NE5532 PedalPCB Chuck D. Bones Celestial Overdrive | PedalPCB Chuck D. Bones Celestial Overdrive | Boost | Dirtbox Layouts | — | 5 | — | 41 | |
| PedalPCB / Chuck D. Bones Voodoo Woman Vero21×20 Unverified BC549C · BS170 · J112 · LM308 PedalPCB Chuck D. Bones Voodoo Woman | PedalPCB Chuck D. Bones Voodoo Woman | Distortion | Dirtbox Layouts | — | 5 | — | 45 | |
| PedalPCB/Chuck D. Bones Yankee Screwdriver Deluxe Turbo Vero20×18 Verified 2N5089 · BC109C · BS170 · J112 PedalPCB Chuck D. Bones Yankee Screwdriver Deluxe Turbo | PedalPCB Chuck D. Bones Yankee Screwdriver Deluxe Turbo | Fuzz | Dirtbox Layouts | — | 5 | — | 41 | |
| Valve Wizard Flanger Perfboard Verified 78L05 · BC337 · J112 · PT2399 Valve Wizard Flanger · 1590BB | Valve Wizard Flanger | Flanger | Effects Layouts (blog) | 1590BB | 3 | — | 34 | |
| Valve Wizard Small Time Perfboard Verified 78L05 · J112 · PT2399 · TL072 Valve Wizard Small Time | Valve Wizard Small Time | Delay | Effects Layouts (blog) | — | 3 | — | 25 | |
| Tails/True Bypass - add-on for PT2399 delays J112 1590B | — | Delay | Fuzz Dog | 1590B | — | £7.20 | 6 | |
| Crimson Idol Overdrive J112 · OC139 EarthQuaker Devices Crimson Drive · 1590B | EarthQuaker Devices Crimson Drive | Overdrive | HotKits | 1590B | 3 | $2.50 | 19 | |
| Rat Distortion J112 · LM308 ProCo RAT · 1590B | ProCo RAT | Distortion | HotKits | 1590B | 4 | $7.00 | 29 | |
| Reef Razor Preamp BC547C · BC557C · IRF740 · J112 Bogner Snorkler preamp · 1590XX | Bogner Snorkler preamp | Preamp / Amp-in-a-box | HotKits | 1590XX | 9 | $28.00 | 61 | |
| Wildhoney Preamp v.3 BC547C · BC557C · IRF740 · J112 Soldano SLO preamp · 1590XX | Soldano SLO preamp | Preamp / Amp-in-a-box | HotKits | 1590XX | 9 | — out | 65 | |
| Vortex Spring Reverb 2N5088 · J112 · LT1054 · NE5532 1590DD | — | Reverb | Mod Electronics | 1590DD | 2 | $129.95 | 51 | |
| Nutty Fuzz 9203 · J112 · LM386 · LM386-M1 Acorn Amplifiers ADHD Synth Fuzz · 125B | Acorn Amplifiers ADHD Synth Fuzz | Fuzz | PedalPCB | 125B | 6 | $12.00 | 29 | |
| Tube Works 303 Smooth J112 · TL072 Tube Works 303 Smooth | Tube Works 303 Smooth | Overdrive | Revolution Deux | — | 5 | — | 63 | |
| Tube Works Blue Tube RT-903 J112 · TL072 Tube Works Blue Tube | Tube Works Blue Tube | Overdrive | Revolution Deux | — | 5 | — | 67 | |
| Tube Works Real Tube RT-901 J112 · TL072 Tubeworks Real Tube 901 | Tubeworks Real Tube 901 | Overdrive | Revolution Deux | — | 5 | — | 66 | |
| Little Angel Chorus - NYE Edition (AMZ modified) Vero18×19 Verified 78L05 · J112 · NE5532 · PT2399 Little Angel Chorus - NYE Edition (AMZ modified) | Little Angel Chorus - NYE Edition (AMZ modified) | Vibrato / Chorus | Tagboard Effects | — | 2 | — | 19 | |
| Valve Wizard U-Boat Vero28×21 Verified CD4013 · J112 · LM833 · TL072 Valve Wizard U-Boat | Valve Wizard U-Boat | Octave / Pitch | Tagboard Effects | — | 2 | — | 29 | |
| ValveWizard Equinox II Vero21×26 Verified 78L05 · J112 · PT2399 · TL072 Valve Wizard Equinox II · 1590B | Valve Wizard Equinox II | Reverb | Tagboard Effects | 1590B | 1 | — | 24 | |
| U-Boat CD4013 · J112 · LM833 · TL072 Merlin Blencowe U-Boat | Merlin Blencowe U-Boat | Octave / Pitch | TH Custom Effects | — | 2 | €9.16 | 54 |