Parts · Diodes
3V9
Zener 3.9 V.4 circuits use this part.
Zeners for 3.9 V
The parts list gives only the voltage, so any zener of that voltage fits. A 500 mW part in DO-35 suits clipping and most pedal uses; the 1 W and 1.3 W parts are larger (DO-41) and only needed where the zener carries real current, such as clamping a supply rail. Check the spacing on the board before ordering the bigger body.
| Part | Series | Power | Package | Boards | Datasheet |
|---|---|---|---|---|---|
| 1N5228B | 1N52xxB | 500 mW | DO-35 | vishay.com | |
| BZX55C3V9 | BZX55 | 500 mW | DO-35 | vishay.com | |
| BZX79C3V9 | BZX79 | 500 mW | DO-35 | nexperia.com | |
| 1N748A | 1N7xxA | 500 mW | DO-35 | centralsemi.com | |
| 1N4686 | 1N4678-4717 | 500 mW | DO-35 | centralsemi.com | |
| 1N4730A | 1N47xxA | 1 W | DO-41 | 1 | vishay.com |
| BZX85C3V9 | BZX85 | 1.3 W | DO-41 | vishay.com |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| John Hollis Ultra Flanger Perfboard Verified CD4046 · CD4049 · CD4049UB · MN3007 John Hollis Ultra Flanger · 1590B | John Hollis Ultra Flanger | Flanger | Effects Layouts (blog) | 1590B | 4 | — | 35 | |
| JunkTrunk LM13700 · LM324 · TL074 Chunk Systems Agent 00Funk · 125B | Chunk Systems Agent 00Funk | Distortion | Madbean | 125B | 4 | $12.00 out | 54 | |
| Chunk Systems - Agent 00Funk Vero29×23 Verified LM13700 · LM324 · TL074 Chunk Systems Agent 00Funk | Chunk Systems Agent 00Funk | EQ / Filter | Tagboard Effects | — | 4 | — | 30 | |
| Madbean Fencepost (Noise Gate / Expander) Vero21×23 Verified BC560 · LM13700 · TL061 Madbean Fencepost (Noise Gate / Expander) | Madbean Fencepost (Noise Gate / Expander) | Noise Gate | Tagboard Effects | — | 1 | — | 39 |