Parts · Transistors
103NU71
Ge NPN BJT TH.3 circuits use this part.
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 |
|---|---|---|---|---|---|
| 103NU71 | 45 | 48 V | 250 mA | 0.125 W | 0.7 MHz |
Closest by the numbers
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|---|---|---|---|---|---|
| GT404I | 60 | 40 V | 500 mA | 0.6 W | 1 MHz |
| AC127Z | 25 | 40 V | 500 mA | 0.175 W | 1 MHz |
| 2N142-13 | 30 | 60 V | 800 mA | 1.5 W | 0.2 MHz |
| SFT186 | 40 | 140 V | 90 MHz | ||
| 2N144-13 | 10 | 60 V | 800 mA | 1 W | 0.2 MHz |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Apocalypse Audio Thundertone Vero17×12 Verified 103NU71 Apocalypse Audio Thundertone | Apocalypse Audio Thundertone | Overdrive | Dirtbox Layouts | — | 4 | — | 24 | |
| Apocalypse Audio Thundertone Perfboard Verified 103NU71 Apocalypse Audio Thundertone | Apocalypse Audio Thundertone | Fuzz | Effects Layouts (blog) | — | 4 | — | 23 | |
| Apocalypse Audio Thunder Tone Vero17×14 Unverified 103NU71 Apocalypse Audio Thundertone | Apocalypse Audio Thundertone | Fuzz | Tagboard Effects | — | 4 | — | 22 |