Parts · Transistors
AC128
9 circuits use this part. Listed as: Semiconductors; Trans-Can-WIDE.
Substitutes Ge PNP 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 |
|---|---|---|---|---|---|
| AC128 | 45 | 16 V | 1000 mA | 1 W | 1 MHz |
Used on other boards here
| Part | hFE min | Vce | Ic | Pc | fT | Boards |
|---|---|---|---|---|---|---|
| GT402B | 60 | 25 V | 500 mA | 0.6 W | 1 MHz | 1 |
Closest by the numbers
| Part | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| AC153 | 50 | 18 V | 2000 mA | 1 W | 1 MHz |
| AC139 | 40 | 20 V | 1200 mA | 0.72 W | 1 MHz |
| AC142 | 40 | 20 V | 1200 mA | 0.72 W | 1 MHz |
| AC180K | 50 | 16 V | 1500 mA | 2.5 W | 1 MHz |
| AC174 | 40 | 16 V | 600 mA | 0.6 W | 0.75 MHz |
| AC117 | 40 | 18 V | 1000 mA | 1 W | 0.5 MHz |
| 2N673 | 40 | 25 V | 2000 mA | 1 W | 0.5 MHz |
| ACY23V | 50 | 30 V | 500 mA | 0.9 W | 0.5 MHz |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Eva 2N2222A · 2N3700 · 2N5088 · AC128 | Spaceman Effects Gemini IV | Fuzz | Dead End FX | 1590BBS | 10 | $15.00 | 77 | |
| Fuzzimile 2N2222 · 2N2222A · 2N3700 · 2N5088 | Gemini III Dual Fuzz Generator | Fuzz | Dead End FX | 1590BBS | 3 | $15.00 | 56 | |
| Screaming Life 2N2907A · AC128 · MPSA18 · TC10445CPA | JHS Bunrunner | Fuzz | Dead End FX | 1590BBS | 5 | $15.00 | 52 | |
| Talk-A-Lizer AC128 · CA3080 | — | Wah / Envelope | Dead End FX | — | 8 | $15.00 | 54 | |
| Roger Mayer Classic Fuzz AC128 | — | Fuzz | Experimentalists Anonymous | — | — | — | 1 | |
| Hybrid Germanium Fuzz 2N3904 · AC128 | — | Fuzz | Five Cats Pedals | 1590B | 5 | £4.50 | 19 | |
| Octo Factory 2N3904 · AC128 | Modified Fuzz Factory | Fuzz | Fuzz Dog | 1590BB | 9 | £45.60 | 25 | |
| Heavy Machinery 2N3904 · AC128 | Zvex Fat Fuzz Factory | Fuzz | Moonn Electronics | — | 5 | €4.50 | 24 | |
| Fuzz Foundry 2N3904 · AC128 | — | Fuzz | PedalPCB | 125B | 5 | $10.00 | 21 |