Parts · Transistors
2N4401
Si NPN BJT TO-92 TH.52 circuits use this part. Listed as: BJT transistor, NPN TO-92; BJT transistor, NPN, TO-92; NPN Transistor; Semiconductors; TO-92 Inline Wide-large-solderpads.
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 |
|---|---|---|---|---|---|
| 2N4401 | 100 | 40 V | 600 mA | 0.31 W | 250 MHz |
Used on other boards here
| Part | hFE min | Vce | Ic | Pc | fT | Boards |
|---|---|---|---|---|---|---|
| TIS92 | 100 | 40 V | 400 mA | 0.625 W | 4 | |
| 2N2222 | 100 | 30 V | 800 mA | 0.5 W | 250 MHz | 129 |
| 2N4970 | 100 | 30 V | 500 mA | 0.2 W | 200 MHz | 1 |
| 2N2219 | 100 | 30 V | 800 mA | 0.8 W | 250 MHz | 2 |
| 2N3569 | 100 | 40 V | 500 mA | 0.3 W | 60 MHz | 3 |
| 2N3416 | 75 | 50 V | 500 mA | 0.36 W | 1 | |
| BC337 | 100 | 45 V | 800 mA | 0.36 W | 60 MHz | 25 |
| MPSA05G | 100 | 60 V | 500 mA | 0.63 W | 100 MHz | 6 |
Closest by the numbers
| Part | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| BSS79C | 100 | 40 V | 800 mA | 0.35 W | 250 MHz |
| BFV85C | 100 | 40 V | 800 mA | 0.36 W | 250 MHz |
| BSS81C | 100 | 35 V | 800 mA | 0.33 W | 250 MHz |
| PN4141 | 100 | 30 V | 500 mA | 0.3 W | 250 MHz |
| 2N3417 | 100 | 50 V | 500 mA | 0.36 W | |
| PN3643 | 100 | 30 V | 500 mA | 0.35 W | 250 MHz |
| 2N3302 | 100 | 30 V | 500 mA | 0.36 W | 250 MHz |
| 2N4450 | 100 | 30 V | 500 mA | 0.36 W | 250 MHz |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Quartz Optical Compressor 2N4401 · 2N5088 · LM358 · MPSA18 Diamond Compressor · 125B | Diamond Compressor | Compressor | Aion FX | 125B | 3 | $12.50 | 94 | |
| Lola Phase 2N4401 · 4558 Mu-Tron Bi-Phase | Mu-Tron Bi-Phase | Phaser | Dead End FX | — | 1 | $35.00 | 196 | |
| Lola Phase - DEFX V.2 Version 2N4401 · 4558 Mu-Tron Bi-Phase | Mu-Tron Bi-Phase | Phaser | Dead End FX | — | 1 | $35.00 | 196 | |
| Zuperbee 2N4401 · 2N5089 · BC108 Smallsound/Bigsound Buzzz · 1590BBS | Smallsound/Bigsound Buzzz | Fuzz | Dead End FX | 1590BBS | 4 | $15.00 | 72 | |
| DAM Fuzzrong FR-70 Vero13×9 Verified 2N4401 · KSP42 DAM Fuzzrong FR-70 | DAM Fuzzrong FR-70 | Fuzz | Dirtbox Layouts | — | 2 | — | 14 | |
| Dr. Green Bearded Lady Bass Fuzz Vero21×18 Verified 2N4401 · BC549B · TL071 Dr. Green Bearded Lady Bass Fuzz | Dr. Green Bearded Lady Bass Fuzz | Fuzz | Dirtbox Layouts | — | 4 | — | 29 | |
| EarthQuaker Devices Spires Vero19×16 Verified 2N4401 · MPS3704 EarthQuaker Devices Spires | EarthQuaker Devices Spires | Fuzz | Dirtbox Layouts | — | 4 | — | 32 | |
| EarthQuaker Devices Spires Green Channel Vero12×11 Verified 2N4401 EarthQuaker Devices Spires Green Channel | EarthQuaker Devices Spires Green Channel | Fuzz | Dirtbox Layouts | — | 2 | — | 14 | |
| Fender Hammertone Fuzz Vero24×23 Verified 2N4401 · 4558 · RC4558 · TL072 Fender Hammertone Fuzz | Fender Hammertone Fuzz | Fuzz | Dirtbox Layouts | — | 3 | — | 34 | |
| Fender Hammertone Overdrive Vero24×22 Unverified 2N4401 · NJM5532 · RC4458 Fender Hammertone Fuzz | Fender Hammertone Fuzz | Overdrive | Dirtbox Layouts | — | 4 | — | 35 | |
| Fender Pugilist Distortion Vero26×23 Verified 2N4401 · 2N4403 · TL072 Fender Pugilist Distortion | Fender Pugilist Distortion | Distortion | Dirtbox Layouts | — | 6 | — | 45 | |
| Fender The Pelt Fuzz Vero21×19 Verified 2N4401 · J201 · NE5532 Fender The Pelt Fuzz | Fender The Pelt Fuzz | Fuzz | Dirtbox Layouts | — | 4 | — | 34 | |
| Fuzzhead Fx Stoner Bee Vero17×17 Verified 2N4401 · MPSA18 · PN2222 Fuzzhead Fx Stoner Bee | Fuzzhead Fx Stoner Bee | Fuzz | Dirtbox Layouts | — | 5 | — | 30 | |
| Mid-Fi Electronics Random Number Generator Vero15×9 Verified 2N3904 · 2N4401 · PN2222 Mid-Fi Electronics Random Number Generator | Mid-Fi Electronics Random Number Generator | Fuzz | Dirtbox Layouts | — | 1 | — | 12 | |
| Seymour Duncan Tweak Fuzz Vero16×11 Unverified 2N3904 · 2N4401 Seymour Duncan Tweak Fuzz | Seymour Duncan Tweak Fuzz | Fuzz | Dirtbox Layouts | — | 2 | — | 20 | |
| Smallsound / Bigsound Buzzz Vero22×22 Unverified 2N4401 · 2N5089 · BC108 Smallsound/Bigsound Buzzz | Smallsound/Bigsound Buzzz | Fuzz | Dirtbox Layouts | — | 4 | — | 42 | |
| Smallsound / Bigsound Team Awesome Fuzz Machine V2 Vero28×23 Unverified 2N4401 · 2N5088 · 2N5457 · GT309B Smallsound / Bigsound Team Awesome Fuzz Machine V2 | Smallsound / Bigsound Team Awesome Fuzz Machine V2 | Fuzz | Dirtbox Layouts | — | 5 | — | 44 | |
| Tyco Brahe Octavia Vero17×16 Verified 2N4401 · 2N5087 Roger Mayer Octavia | Roger Mayer Octavia | Fuzz | Dirtbox Layouts | — | 2 | — | 27 | |
| AstroClone 2N4401 · 2N5089 AstroTone Sam Ash Fuzzz Boxx | AstroTone Sam Ash Fuzzz Boxx | Fuzz | Eff Dub Audio | — | 2 | — | 15 | |
| D*A*M FR-70 FuzzRong Perfboard Verified 2N4401 · KSP42 D*A*M FR-70 FuzzRong · 1590A | D*A*M FR-70 FuzzRong | Fuzz | Effects Layouts (blog) | 1590A | 2 | — | 15 | |
| Mid-Fi Electronics Random Number Generator Perfboard Verified 2N3904 · 2N4401 · PN2222 Mid-Fi Electronics Random Number Generator · 1590A | Mid-Fi Electronics Random Number Generator | Fuzz | Effects Layouts (blog) | 1590A | 1 | — | 14 | |
| Morley Steve Vai Wah 2N3904 · 2N4401 · 2N5484 · CD4069UB Morley Steve Vai Wah | Morley Steve Vai Wah | Wah / Envelope | Experimentalists Anonymous | — | — | — | 72 | |
| Random Number Generator 2N3904 · 2N4401 · PN2222 | — | Fuzz | Experimentalists Anonymous | — | — | — | 11 | |
| Siren generator 2N4401 · 2N4403 | — | Ring Mod / Synth | Experimentalists Anonymous | — | — | — | 13 | |
| Random Cats 2N3904 · 2N4401 · PN2222 Mid-Fi Electronics Random Number Generator | Mid-Fi Electronics Random Number Generator | Utility | Five Cats Pedals | — | 1 | £3.50 | 25 | |
| Goatee Girl 2N4401 · BC549B · TL071 Dr. Green Bearded Lady Bass Fuzz · 1590B | Dr. Green Bearded Lady Bass Fuzz | Fuzz | Fuzz Dog | 1590B | 4 | £36.00 | 50 | |
| Green Spike 2N4401 Spires Green Channel / Rosac Nu-Fuzz · 1590B | Spires Green Channel / Rosac Nu-Fuzz | Fuzz | Fuzz Dog | 1590B | 2 | £26.40 | 19 | |
| Octavia 2N4401 · 2N5087 Roger Mayer Octavia · 1590B2 | Roger Mayer Octavia | Fuzz | Fuzz Dog | 1590B2 | 2 | £45.60 | 25 | |
| RNG 2N3904 · 2N4401 · PN2222 Doug Deeper / Mid-Fi Random Number Generator · 1590B | Doug Deeper / Mid-Fi Random Number Generator | Fuzz | Fuzz Dog | 1590B | 1 | £24.00 | 23 | |
| MXR Headphone Amp 2N4401 · 2N4403 · TL071 MXR Headphone Amp | MXR Headphone Amp | Utility | General Guitar Gadgets | — | 1 | $11.00 delisted | 25 | |
| Squishy Octopus 2N4401 · TL072 Enhanced DOD 280 | Enhanced DOD 280 | Compressor | GuitarPCB | — | 1 | $8.95 out | 28 | |
| Glasshole 2N4401 · LT1054 Mu-Tron Phasor II · 1590BB | Mu-Tron Phasor II | Distortion | Madbean | 1590BB | 3 | $14.00 | 92 | |
| Retrograde 2N4401 · 2N5087 Roger Mayer Octavia · 125B | Roger Mayer Octavia | Octave / Pitch | Madbean | 125B | 2 | $11.00 | 28 | |
| Dice 2N2222 · 2N3904 · 2N4401 Mid-Fi Electronics Random Number Generator | Mid-Fi Electronics Random Number Generator | Fuzz | Moonn Electronics | — | 1 | €2.50 | 18 | |
| Fuzzhead FX Stoner Bee 2N2222 · 2N4401 · MPSA18 | — | Fuzz | Moonn Electronics | — | 5 | €5.50 | 44 | |
| Octavia 2N4401 · 2N5087 Roger Mayer Octavia · 125B | Roger Mayer Octavia | Fuzz | OP Electronics | 125B | 3 | €2.00 | 30 | |
| Octavius 2N4401 · 2N5087 Roger Mayer Octavia · 125B | Roger Mayer Octavia | Octave / Pitch | PCB Guitar Mania | 125B | 2 | €9.90 out | 32 | |
| Spires 2N4401 · MPS3704 EarthQuaker Devices Spires | EarthQuaker Devices Spires | Other | PCBWay: Glory to Ukraine | — | 4 | — | 27 | |
| Chauffeur Overdrive 2N4401 · 2N4403 · 4558 · 7660S Shnobel Tone Daily Driver Overdrive · 1590BB | Shnobel Tone Daily Driver Overdrive | Fuzz | PedalPCB | 1590BB | 4 | $12.00 | 89 | |
| Courier Overdrive 2N4401 · 2N4403 · 4558 · 7660S Shnobel Tone Mid Driver Overdrive · 1590BB | Shnobel Tone Mid Driver Overdrive | Fuzz | PedalPCB | 1590BB | 4 | $12.00 | 89 | |
| Duo-Phase 2N4401 · TC1044 · TC1044SCPA · TL072 Mu-Tron Bi-Phase · 1590XX | Mu-Tron Bi-Phase | Vibrato / Chorus | PedalPCB | 1590XX | 8 | $18.00 | 170 | |
| Hammered Kitty Fuzz 2N4401 · 4558 · RC4558 · TL072 Fender Hammertone Fuzz · 125B | Fender Hammertone Fuzz | Fuzz | PedalPCB | 125B | 5 | $12.00 | 62 | |
| Mouton Fuzz 2N4401 · J201 · NE5532 Fender The Pelt Fuzz · 125B | Fender The Pelt Fuzz | Fuzz | PedalPCB | 125B | 6 | $12.00 | 54 | |
| Phase II 2N4401 · TC1044 · TC1044SCPA · TL072 Mu-Tron Phasor II · 125B | Mu-Tron Phasor II | Vibrato / Chorus | PedalPCB | 125B | 2 | $12.00 | 83 | |
| DAM FR70 FuzzRong Vero17×7 Verified 2N4401 · KSP42 D*A*M FR-70 FuzzRong | D*A*M FR-70 FuzzRong | Fuzz | Tagboard Effects | — | 2 | — | 14 | |
| Fuchs Audio Plush Cream Vero21×15 Verified 2N4401 · NE5532 Fuchs Audio Plush Cream | Fuchs Audio Plush Cream | Overdrive | Tagboard Effects | — | 3 | — | 21 | |
| MXR Headphone Amp Vero Verified 2N4401 · 2N4403 · TL071 MXR Headphone Amp | MXR Headphone Amp | Utility | Tagboard Effects | — | 1 | — | 17 | |
| Mid-Fi Electronics Random Number Generator Vero20×7 Verified 2N3904 · 2N4401 · PN2222 Mid-Fi Electronics Random Number Generator | Mid-Fi Electronics Random Number Generator | Other | Tagboard Effects | — | 1 | — | 13 | |
| Mutron Phasor II Vero38×26 Verified 2N4401 · 4558 · 7660S · ICL7660S Mu-Tron Phasor II | Mu-Tron Phasor II | Phaser | Tagboard Effects | — | 3 | — | 37 | |
| Octavia Tetavia 2N4401 · 2N5087 Roger Mayer Octavia | Roger Mayer Octavia | Fuzz | Tonepad | — | 2 | $8.00 | 23 | |
| Ibanez TS808 Tube Screamer Vero 2N4401 · 4558 · 4558D Ibanez TS808 Tube Screamer | Ibanez TS808 Tube Screamer | Overdrive | turretboard.org | — | 3 | — | 25 | |
| Ibanez TS9 Tube Screamer Vero 2N4401 · 4558 · 4558D Ibanez TS9 Tube Screamer | Ibanez TS9 Tube Screamer | Overdrive | turretboard.org | — | 3 | — | 25 |