Parts · Transistors
2N3904
Si NPN BJT TO-92 TH.875 circuits use this part. Listed as: BJT transistor, NPN TO-92; BJT transistor, NPN, TO-92; Semiconductors; Transistor; NPN Transistor.
Datasheet · from onsemi.com
Substitutes Si NPN transistor
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 | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| 2N3904 | 40 | 40 V | 200 mA | 0.31 W | 300 MHz |
Used on other boards here
| Part | hFE min | Vce | Ic | Pc | fT | Boards |
|---|---|---|---|---|---|---|
| 2SC1175 | 40 | 45 V | 200 mA | 0.3 W | 170 MHz | 1 |
| PN100 | 40 | 35 V | 500 mA | 0.625 W | 200 MHz | 5 |
| 2N3903 | 50 | 40 V | 200 mA | 0.31 W | 250 MHz | 15 |
| 2N4123 | 50 | 30 V | 200 mA | 0.31 W | 240 MHz | 2 |
| 2N3568 | 40 | 60 V | 200 mA | 0.3 W | 60 MHz | 1 |
| BF244 | 30 | 30 V | 100 mA | 0.3 W | 170 MHz | 3 |
| 2N1613 | 40 | 50 V | 600 mA | 0.8 W | 80 MHz | 3 |
| 2N697 | 40 | 40 V | 500 mA | 0.6 W | 50 MHz | 1 |
Closest by the numbers
| Part | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| BFJ67 | 40 | 40 V | 1000 mA | 0.36 W | |
| BFJ68 | 40 | 40 V | 1000 mA | 0.36 W | |
| BSS79B | 40 | 40 V | 800 mA | 0.35 W | 250 MHz |
| BFV85A | 40 | 40 V | 800 mA | 0.36 W | 250 MHz |
| BFW68 | 40 | 40 V | 200 mA | 0.36 W | 250 MHz |
| 2SC945R | 40 | 50 V | 150 mA | 0.25 W | 300 MHz |
| BSS81B | 40 | 35 V | 800 mA | 0.35 W | 250 MHz |
| 2SC3921 | 40 | 50 V | 500 mA | 0.3 W | 250 MHz |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| 360 Bass Preamp 2N1306 · 2N3904 · 2N5088 · LT1054 Acoustic 360 Preamp · 1590XX | Acoustic 360 Preamp | Preamp / Amp-in-a-box | Aion FX | 1590XX | 5 | $22.00 | 120 | |
| 360 Fuzz 2N3904 · 2N5088 · GE NPN Acoustic 360 Fuzz · 125B | Acoustic 360 Fuzz | Fuzz | Aion FX | 125B | 2 | $12.50 | 53 | |
| Antipode Vintage Fuzz 2N3904 · 741 · LM741 Roland AF-60 Bee Gee · 125B | Roland AF-60 Bee Gee | Fuzz | Aion FX | 125B | 3 | $12.50 | 54 | |
| Aperture Octave Fuzz 2N3904 · MPSA14 Ampeg Scrambler · 125B | Ampeg Scrambler | Fuzz | Aion FX | 125B | 3 | $12.50 | 53 | |
| Ascalon Octave Fuzz 2N3904 · 2N5089 King Tone Octaland · 125B | King Tone Octaland | Fuzz | Aion FX | 125B | 4 | $12.50 | 70 | |
| Astra Silicon Fuzz 2N3904 AstroTone Fuzz · 125B | AstroTone Fuzz | Fuzz | Aion FX | 125B | 3 | $12.50 | 35 | |
| Charon Overdrive 2N3904 · 2N5087 · 2N5088 · 2N5457 Ibanez CR-5 · 125B | Ibanez CR-5 | Overdrive | Aion FX | 125B | 3 | $12.50 | 75 | |
| Constellation Vintage Fuzz 2N3904 Shin-ei FY-2 Companion Fuzz · 125B | Shin-ei FY-2 Companion Fuzz | Fuzz | Aion FX | 125B | 3 | $12.50 | 40 | |
| Flare Fuzz Machine 2N3904 · GERMANIUM Z.Vex Fuzz Factory · 125B | Z.Vex Fuzz Factory | Fuzz | Aion FX | 125B | 8 | $12.50 | 36 | |
| Flare (Legacy) 2N3904 · PNP Z.Vex Fuzz Factory · 1590B | Z.Vex Fuzz Factory | Fuzz | Aion FX | 1590B | 8 | — | 27 | |
| Halo Distortion / Sustainer 2N3904 Electro-Harmonix Big Muff Pi · 125B | Electro-Harmonix Big Muff Pi | Fuzz | Aion FX | 125B | 4 | $12.50 | 59 | |
| Hexatron Optical Phaser 2N3904 · 4558 · LT1054 · LT1054CP Mu-Tron Phasor II · 125B | Mu-Tron Phasor II | Phaser | Aion FX | 125B | 3 | $16.00 | 107 | |
| IVP Preamp 2N3904 · 2N3906 · 2N5088 · 4558 Intersound IVP Tube Voice Distortion · 1590DD | Intersound IVP Tube Voice Distortion | Overdrive | Aion FX | 1590DD | 6 | $24.00 | 203 | |
| L4 Bass Preamp 2N3904 · 2N3906 · 2N5088 · 2N5457 Lab Series L4 · 1590XX | Lab Series L4 | Preamp / Amp-in-a-box | Aion FX | 1590XX | 6 | $22.00 | 205 | |
| 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 | |
| L5 Preamp Clean Channel 2N3904 · 2N3906 · 2N5457 · 4558 Lab Series L5 · 1590BBS | Lab Series L5 | Preamp / Amp-in-a-box | Aion FX | 1590BBS | 3 | $16.00 | 114 | |
| L5 Preamp Drive Channel 2N3904 · 2N3906 · 2N5457 · 4558 Lab Series L5 · 1590BBS | Lab Series L5 | Preamp / Amp-in-a-box | Aion FX | 1590BBS | 5 | $16.00 | 136 | |
| Monad Vintage Boost 2N3904 Univox Uni-Drive UD-50 · 125B | Univox Uni-Drive UD-50 | Boost | Aion FX | 125B | 3 | $12.50 | 36 | |
| Obscura Octave Blend 2N3904 Prescription Electronics COB · 125B | Prescription Electronics COB | Fuzz | Aion FX | 125B | 3 | $12.50 | 52 | |
| Octagon Octave Fuzz 2N3904 · 2N3906 Roger Mayer Octavia · 125B | Roger Mayer Octavia | Fuzz | Aion FX | 125B | 2 | $12.50 | 38 | |
| Orpheus Silicon Fuzz 2N3904 Mosrite Fuzzrite · 125B | Mosrite Fuzzrite | Fuzz | Aion FX | 125B | 2 | $12.50 | 30 | |
| Particle Vintage Fuzz 2N3904 · 2N404A Interfax Harmonic Percolator · 125B | Interfax Harmonic Percolator | Fuzz | Aion FX | 125B | 3 | $12.50 | 32 | |
| Penumbra Bass Fuzz 2N3904 · 2N5457 Z.Vex Woolly Mammoth · 125B | Z.Vex Woolly Mammoth | Fuzz | Aion FX | 125B | 6 | $12.50 | 44 | |
| Photon Booster / Line Driver 2N3904 · 2N3906 · 2N5087 · 2N5089 SD Pickup Booster · 125B | SD Pickup Booster | Boost | Aion FX | 125B | 2 | $12.50 | 44 | |
| Rift Octave Fuzz 2N3903 · 2N3904 Univox Super-Fuzz · 125B | Univox Super-Fuzz | Fuzz | Aion FX | 125B | 3 | $12.50 | 68 | |
| Zeta Distortion / Sustainer 2N3904 Jumbo Tone Bender · 125B | Jumbo Tone Bender | Fuzz | Aion FX | 125B | 3 | $12.50 | 52 | |
| Bootstrapping is great 2N3904 | — | Fuzz | Bent Fishbowl | — | — | — | 13 | |
| Buzz Farm - My first pedal 2N3904 | — | Fuzz | Bent Fishbowl | — | 6 | — | 20 | |
| Dudson Narrowcast V2 2N3904 | — | Fuzz | Bent Fishbowl | — | 3 | — | 28 | |
| Enveloping Timbre: envelope distortion 2N3904 · TL072 | — | Distortion | Bent Fishbowl | — | 5 | — | 37 | |
| LFOstortion 2N3904 · LM358 · TL072 | — | Distortion | Bent Fishbowl | — | 5 | — | 36 | |
| Morley M2 Volume Wah (M2WA) schematic 2N3904 · TL071 | — | Wah / Envelope | Bent Fishbowl | — | 2 | — | 26 | |
| Precision Fuzz: TL431 based fuzzes 2N3904 · TL431LP | — | Fuzz | Bent Fishbowl | — | — | — | 35 | |
| Trembling Satellite tremolo 2N3904 · TL072 1590B | — | Tremolo | Bent Fishbowl | 1590B | 3 | — | 31 | |
| ULNa and Radius Fuzzes 2N3904 · ULN2003 | — | Fuzz | Bent Fishbowl | — | 1 | — | 21 | |
| VCA-1 multipurpose VCA pedal 2N3904 · 2N3906 · LM358 · LM555 1590B | — | Wah / Envelope | Bent Fishbowl | 1590B | 2 | — | 48 | |
| Ambassador 2N3904 · IRF740 · NE555 Matchless Hotbox · 1590BB | Matchless Hotbox | Overdrive | C2C Electronics | 1590BB | 5 | $21.00 | 36 | |
| Bassdude 2N3904 · IRF740 · NE555 Fender Bassman · 1590BB | Fender Bassman | Preamp / Amp-in-a-box | C2C Electronics | 1590BB | 4 | $21.00 | 29 | |
| Bathtub Reverb 2N3904 · 7805 · BTDR-2H · IRF740 125B | — | Reverb | C2C Electronics | 125B | 2 | $18.00 | 30 | |
| Black Eye 2N3904 · IRF740 · NE555 Soldano Supercharger GTO · 1590BB | Soldano Supercharger GTO | Distortion | C2C Electronics | 1590BB | 3 | $21.00 | 32 | |
| Diplomat 2N3904 · 7806 · IRF740 · L7806 Matchless DC30 · 125B | Matchless DC30 | Preamp / Amp-in-a-box | C2C Electronics | 125B | 1 | $18.00 | 39 | |
| High Voltage SMPS 2N3904 · IRF740 · L7806 REGULATOR · NE555 | — | Utility | C2C Electronics | — | — | $8.00 | 17 | |
| King Nothing 2N3904 · IRF740 · J201 · NE555 Kingsley Harlot · 125B | Kingsley Harlot | Overdrive | C2C Electronics | 125B | 3 | $18.00 | 40 | |
| Lab Rat 2N3904 · IRF740 · NE555 ProCo RAT · 1590BB | ProCo RAT | Distortion | C2C Electronics | 1590BB | 4 | $20.00 | 40 | |
| Mirage Tremolo 2N3904 · IRF740 · NE555 Matchless Vibrobox · 1590BB | Matchless Vibrobox | Tremolo | C2C Electronics | 1590BB | 2 | $21.00 | 36 | |
| Nobelium 2N3904 · IRF740 · NE555 Noble Preamp · 1590XX | Noble Preamp | Preamp / Amp-in-a-box | C2C Electronics | 1590XX | 4 | $29.00 | 53 | |
| Particle Accelerator 2N3904 · IRF740 · NE555 Alembic F-2B · 125B | Alembic F-2B | Preamp / Amp-in-a-box | C2C Electronics | 125B | 5 | $18.00 | 30 | |
| Solaris Delay 2N3904 · 7805 · IRF740 · L7805 1590BB | — | Delay | C2C Electronics | 1590BB | 4 | $20.00 | 65 | |
| Steddi Go 2N3904 · IRF740 · NE555 1590BB2 | — | Preamp / Amp-in-a-box | C2C Electronics | 1590BB2 | 1 | $15.00 | 25 | |
| Tungsten Preamp 2N3904 · IRF740 · NE555 1590XX | — | Preamp / Amp-in-a-box | C2C Electronics | 1590XX | 7 | $29.00 | 47 | |
| Vampire Slayer 2N3904 · IRF740 · NE555 125B | — | Buffer | C2C Electronics | 125B | — | $14.00 | 23 | |
| Wrecking Ball 2N3904 · IRF740 · NE555 Mesa Boogie Dual Rectifier Solo · 1590XX | Mesa Boogie Dual Rectifier Solo | Preamp / Amp-in-a-box | C2C Electronics | 1590XX | 6 | $29.00 | 37 | |
| Abductor Delay Ii 2N3904 · 2N5457 · PT2399 | — | Delay | Dead Astronaut FX | — | 6 | £15.00 | 127 | |
| Astro Flanger Filter 2N3904 · 2N3906 · 4013N · 4049N | Dead Astronaut Astro Flanger Filter | EQ / Filter | Dead Astronaut FX | — | 5 | — | 68 | |
| Dreamtime Delay 2N3904 · 78L05 · PT2399 · TL072 | Dead Astronaut Dreamtime Delay | Delay | Dead Astronaut FX | — | 5 | £15.00 | 95 | |
| Faze Filter 2N3904 · 2N5457 · TL072 | Dead Astronaut Faze Filter | EQ / Filter | Dead Astronaut FX | — | 1 | £15.00 | 52 | |
| Skinwalker Hi Gain Distortion 2N3904 · J201 | — | Distortion | Dead Astronaut FX | — | 5 | £15.00 | 55 | |
| Anticarus 2N3904 · BS170 · J201 · LM/CA3080 Spaceman Effects Aphelion · 125B | Spaceman Effects Aphelion | Overdrive | Dead End FX | 125B | 3 | $12.00 | 39 | |
| Big Ear 2N3904 · 2N5087 · 4558 · BC546B Spaceman Effects WOW Signal · 1590BBS | Spaceman Effects WOW Signal | Fuzz | Dead End FX | 1590BBS | 5 | $15.00 | 60 | |
| Calypso 2N3904 · LM5532 · NE5532 Spaceman Effects Explorer phaser · 1590C | Spaceman Effects Explorer phaser | Phaser | Dead End FX | 1590C | 6 | $20.00 | 84 | |
| Definite Phase 2N3904 · 4093N · 4558 · CD4093 ProphecySound Systems Infinitphase | ProphecySound Systems Infinitphase | Phaser | Dead End FX | — | 19 | $35.00 | 199 | |
| Deshere 2N3904 · BS170 Spaceman Effects Sputnik · 1590BBS | Spaceman Effects Sputnik | Fuzz | Dead End FX | 1590BBS | 5 | $15.00 | 51 | |
| Flint 2N3904 · BS170 · LND150N3-G Spaceman Effects Saturn V · 125B | Spaceman Effects Saturn V | Overdrive | Dead End FX | 125B | 2 | $12.00 | 27 | |
| Fugu 2N3904 · BS170 · BS250 · PN2222A Spaceman Effects Titan II · 125B | Spaceman Effects Titan II | Fuzz | Dead End FX | 125B | 3 | $12.00 | 32 | |
| Glenn 2N3904 · BS170 · BS250 · LND150N3 Spaceman Effects Atlas III booster · 125B | Spaceman Effects Atlas III booster | Boost | Dead End FX | 125B | 1 | $12.00 | 31 | |
| Gollum 2N3904 · BS170 · J201 Spaceman Effects Rumblefuzz · 125B | Spaceman Effects Rumblefuzz | Fuzz | Dead End FX | 125B | 4 | $12.00 | 33 | |
| Hapalochlaena 2N3904 · 2N3906 · AD633AN Frostwave Blue Ringer · 1590D | Frostwave Blue Ringer | Ring Mod / Synth | Dead End FX | 1590D | 5 | $20.00 | 91 | |
| Inchindown Redux 2N3904 · 2SA1015Y · 2SC1815BL · 74HCU04N Ibanez EM5 Echomachine · 1590J | Ibanez EM5 Echomachine | Vibrato / Chorus | Dead End FX | 1590J | 6 | $15.00 | 101 | |
| Kakehashi'S Nightmare 2N3904 · 2N5087 · 2N5089 · 2SK30A-GR Boss DB-5 DRIVER · 1590D | Boss DB-5 DRIVER | Fuzz | Dead End FX | 1590D | 5 | $20.00 | 107 | |
| Laika Fuzz V.2 2N3904 · 2SB172 · 2SK30A-Y · BS170 Spaceman Effects Sputnik II · 1590BBS | Spaceman Effects Sputnik II | Fuzz | Dead End FX | 1590BBS | 4 | $7.50 | 55 | |
| Laika II 2N3904 · 2SB172 · 2SK30A-Y · BS170 Spaceman Effects Sputnik IIb · 1590BBS | Spaceman Effects Sputnik IIb | Fuzz | Dead End FX | 1590BBS | 4 | $15.00 | 61 | |
| Low Blow V.2 2N3904 · BS170 Katanasound Super Bass Fuzz · 1590BBS | Katanasound Super Bass Fuzz | Fuzz | Dead End FX | 1590BBS | 4 | $15.00 | 61 | |
| Moonstone 2N3700 · 2N3904 · 2N5088 · BC547B Wyllie Moonrock · 1590BBS | Wyllie Moonrock | Fuzz | Dead End FX | 1590BBS | 5 | $15.00 | 68 | |
| Mother Brain 2N3904 · TL072 Lovetone Big Cheese · 1590BBS | Lovetone Big Cheese | Fuzz | Dead End FX | 1590BBS | 3 | $15.00 | 47 | |
| Q2 2N3904 · 2N3906 · 2N5484 · CA3080 Frostwave Resonator · 1590D | Frostwave Resonator | EQ / Filter | Dead End FX | 1590D | 7 | $20.00 | 136 | |
| Shillelagh 2N2222A · 2N3904 · 4558 · BS170 Last Gasp Arts Labs 46 Sooperfuzz · 1590BBS | Last Gasp Arts Labs 46 Sooperfuzz | Fuzz | Dead End FX | 1590BBS | 3 | $15.00 | 67 | |
| Sprocket II 2N3904 · 2N3906 · 2N5088 · BS170 Spaceman Effects Spacerocket II · 125B | Spaceman Effects Spacerocket II | Fuzz | Dead End FX | 125B | 2 | $12.00 | 42 | |
| Synergy V.2 2N3904 · J201 · MC33178 · TL072 TWA Triskelion 3 · 1590BBS | TWA Triskelion 3 | Overdrive | Dead End FX | 1590BBS | 2 | $15.00 | 68 | |
| Trahald 2N3904 · BS170 · BS250 Spaceman Effects Rumblefuzz II · 125B | Spaceman Effects Rumblefuzz II | Fuzz | Dead End FX | 125B | 3 | $12.00 | 34 | |
| Tresonator 2N3904 · 2N3906 · 2N5484 · CA3080 Frostwave Resonator | Frostwave Resonator | Wah / Envelope | Dead End FX | — | 5 | $20.00 | 80 | |
| Wally II 2N3904 · BS170 · BS250 · TLC2274 Spaceman Effects Apollo VIIb · 125B | Spaceman Effects Apollo VIIb | Overdrive | Dead End FX | 125B | 3 | $12.00 | 46 | |
| Buzz Box 2N3904 1590A | — | Fuzz | delyk PCBs | 1590A | 3 | — | 18 | |
| Effects Tester Mk II 2N3904 · MAX1044/7660S/LT1054 | — | Utility | delyk PCBs | — | 1 | — | 18 | |
| LB8/9 2N3904 · 2N5088 · 4558 1590LB | — | Overdrive | delyk PCBs | 1590LB | — | — | 46 | |
| Little Angel 2N3904 · 78L05 · NE5532 · PT2399 Little Angel Chorus - Birthday Edition · 1590A | Little Angel Chorus - Birthday Edition | Vibrato / Chorus | delyk PCBs | 1590A | 1 | — out | 48 | |
| Meathead 2N3904 · BC182L 1590A | — | Fuzz | delyk PCBs | 1590A | 1 | — out | 16 | |
| 1981 Inventions LVL Vero20×19 Verified 1458 · 2N3904 · LM833 1981 Inventions LVL | 1981 Inventions LVL | Boost | Dirtbox Layouts | — | 2 | — | 28 | |
| Ace Tone FM-2 Fuzzmaster V2 Vero20×18 Verified 2N3904 · 2N5088 Ace Tone FM-2 Fuzzmaster V2 | Ace Tone FM-2 Fuzzmaster V2 | Fuzz | Dirtbox Layouts | — | 2 | — | 22 | |
| Acorn Amplifiers MIGFET 50p Preamp Vero19×20 Verified 2N3904 · 2N5457 · 7660S · 7660SCPAZ Acorn Amplifiers MIGFET 50p Preamp | Acorn Amplifiers MIGFET 50p Preamp | Preamp / Amp-in-a-box | Dirtbox Layouts | — | 5 | — | 34 | |
| Aion Fx Antipode / Roland AF-60 Bee Gee Vero19×16 Verified 2N3904 · 741 · LM741 Roland AF-60 Bee Gee | Roland AF-60 Bee Gee | Distortion | Dirtbox Layouts | — | 3 | — | 32 | |
| Aion Fx Penumbra Vero15×20 Verified 2N3904 · 2N5457 Aion Penumbra | Aion Penumbra | Fuzz | Dirtbox Layouts | — | 4 | — | 29 | |
| Aleph Null Grawlix Vero18×17 Verified 2N3904 · 2N3906 Aleph Null Grawlix | Aleph Null Grawlix | Fuzz | Dirtbox Layouts | — | 4 | — | 23 | |
| Aleph Null Moka Pot Fuzz Vero17×16 Verified 2N3904 · 2N3906 · BS170 Aleph Null Moka Pot Fuzz | Aleph Null Moka Pot Fuzz | Fuzz | Dirtbox Layouts | — | 6 | — | 29 | |
| Aleph Null Oomph! Overdrive Vero13×13 Unverified 2N3904 Aleph Null Oomph! Overdrive | Aleph Null Oomph! Overdrive | Overdrive | Dirtbox Layouts | — | 5 | — | 20 | |
| Aleph Null Parallel Peacock Fuzz Vero21×20 Unverified 2N3904 · 2N3906 · 4558 · BS170 Aleph Null Parallel Peacock Fuzz | Aleph Null Parallel Peacock Fuzz | Fuzz | Dirtbox Layouts | — | 5 | — | 38 | |
| Aleph Null Special Sauce Vero20×18 Verified 2N3904 · 2N5089 · 7805 · BS170 Aleph Null Special Sauce | Aleph Null Special Sauce | Vibrato / Chorus | Dirtbox Layouts | — | 4 | — | 29 | |
| Ampeg A3 Overdrive Vero18×15 Unverified 2N3904 · 4558 Ampeg A3 Overdrive | Ampeg A3 Overdrive | Distortion | Dirtbox Layouts | — | 3 | — | 25 | |
| Aria AFZ-1 Fuzz Vero22×19 Verified 2N3904 · 2SK30A Aria AFZ-1 Fuzz | Aria AFZ-1 Fuzz | Fuzz | Dirtbox Layouts | — | 3 | — | 36 | |
| Aria AOD-1 Overdrive Vero20×18 Unverified 2N3904 · 4558 · JRC4558 Aria AOD-1 Overdrive | Aria AOD-1 Overdrive | Overdrive | Dirtbox Layouts | — | 3 | — | 30 | |
| Aria RE-102 Distortion Sustainer Vero17×14 Verified 2N3904 Aria RE-102 Distortion Sustainer | Aria RE-102 Distortion Sustainer | Distortion | Dirtbox Layouts | — | 2 | — | 19 |