Parts · Transistors
AC127
Ge NPN BJT TO-1 TH.14 circuits use this part. Listed as: Germanium transistor, NPN; Transistor.
Selector table · a row in a maker's catalog, not a full datasheet; the part is discontinued
Substitutes Ge 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 |
|---|---|---|---|---|---|
| AC127 | 50 | 12 V | 500 mA | 0.34 W | 1.5 MHz |
Used on other boards here
| Part | hFE min | Vce | Ic | Pc | fT | Boards |
|---|---|---|---|---|---|---|
| AC176 | 52 | 20 V | 1000 mA | 0.22 W | 1 MHz | 20 |
| GT404B | 60 | 25 V | 500 mA | 0.6 W | 1 MHz | 1 |
| NTE103A | 63 | 32 V | 1000 mA | 0.65 W | 2.3 MHz | 4 |
| AC187 | 100 | 15 V | 2000 mA | 0.225 W | 1 MHz | 7 |
| 2SD352 | 100 | 30 V | 1000 mA | 0.6 W | 2 |
Closest by the numbers
| Part | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| AC181 | 50 | 16 V | 1000 mA | 0.3 W | 2 MHz |
| AC185 | 50 | 16 V | 500 mA | 0.27 W | 2 MHz |
| SFT377 | 50 | 16 V | 600 mA | 0.25 W | 1 MHz |
| AC186 | 60 | 18 V | 700 mA | 0.215 W | 1 MHz |
| AC558 | 40 | 16 V | 1000 mA | 0.23 W | 1 MHz |
| 2N525 | 44 | 30 V | 500 mA | 0.225 W | 1 MHz |
| NKT781 | 52 | 20 V | 1000 mA | 0.215 W | 0.5 MHz |
| 2N2430 | 60 | 32 V | 500 mA | 0.25 W | 1 MHz |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Cinder Hybrid Fuzz 2N5088 · AC127 · TL072 Amptweaker Tight Drive · 125B | Amptweaker Tight Drive | Fuzz | Aion FX | 125B | 4 | $12.50 | 73 | |
| Amptweaker Tight Fuzz Vero23×23 Verified 2N5088 · AC127 · TL072 Amptweaker Tight Drive | Amptweaker Tight Drive | Fuzz | Dirtbox Layouts | — | 4 | — | 41 | |
| BJF Bonebender 1 Vero17×10 Verified AC127 · J113 BJF Bonebender 1 | BJF Bonebender 1 | Fuzz | Dirtbox Layouts | — | 2 | — | 17 | |
| BJF Bonebender 2 Vero18×12 Verified AC127 BJF Bonebender 2 | BJF Bonebender 2 | Fuzz | Dirtbox Layouts | — | 4 | — | 25 | |
| DAM/Solasound Tonebender Mk II The Hybrid Vero14×10 Verified AC127 · PN2222 DAM Solasound Tonebender Mk II The Hybrid | DAM Solasound Tonebender Mk II The Hybrid | Fuzz | Dirtbox Layouts | — | 2 | — | 17 | |
| Jen Jumbo Fuzz with gate circuit Vero21×19 Verified 2N5172 · AC127 Jen Jumbo Fuzz with gate circuit | Jen Jumbo Fuzz with gate circuit | Distortion | Dirtbox Layouts | — | 3 | — | 32 | |
| Skreddy Hybrid Fuzz Driver Vero18×12 Verified AC127 · BC109C Skreddy Hybrid Fuzz Driver | Skreddy Hybrid Fuzz Driver | Fuzz | Dirtbox Layouts | — | 5 | — | 25 | |
| Skreddy Screwdriver Deluxe Vero19×12 Verified AC127 · BC109C · BS170 Skreddy Screwdriver Deluxe | Skreddy Screwdriver Deluxe | Fuzz | Dirtbox Layouts | — | 5 | — | 29 | |
| Sweet Feets Distortion AC127 | — | Distortion | Experimentalists Anonymous | — | 2 | — | 15 | |
| Fusion Fuzz AC127 · BC109C Skreddy Hybrid Fuzz Driver · 1590B | Skreddy Hybrid Fuzz Driver | Fuzz | Fuzz Dog | 1590B | 5 | £38.40 | 32 | |
| Cosmopolitan AC127 · BC109 · BS170 Skreddy Screwdriver · 1590B | Skreddy Screwdriver | Fuzz | Madbean | 1590B | 5 | $10.00 | 40 | |
| Full Circle Bass Fuzz 2N3904, 2N5088, 2N2222 · AC127 Acoustic 360 Preamp | Acoustic 360 Preamp | Fuzz | Moody Sounds | — | 3 | kr850.00 out | 20 | |
| Keeley Fuzz Head Vero17×15 Verified AC127 · MPSA18 Keeley Fuzz Head | Keeley Fuzz Head | Fuzz | Tagboard Effects | — | 3 | — | 31 | |
| Skreddy Screwdriver Deluxe Vero21×10 Verified AC127 · BC109C · BS170 Skreddy Screwdriver Deluxe · 1590B | Skreddy Screwdriver Deluxe | Overdrive | Tagboard Effects | 1590B | 5 | — | 27 |