Parts · Transistors
KP103K
Si P-ch JFET.1 circuit uses this part.
Substitutes P-channel JFET
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 | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| KP103K | 4 V | 5.5 mA | 10 V | 0.038 W |
Used on other boards here
| Part | Vgs max | Id max | Vds | Pd | Boards |
|---|---|---|---|---|---|
| 2N5460 | 4 V | 5 mA | 40 V | 0.35 W | 1 |
| 2N5461 | 4.5 V | 9 mA | 40 V | 0.35 W | 1 |
| J176 | 4.5 V | 25 mA | 30 V | 0.35 W | 1 |
| 2N5116 | 25 mA | 30 V | 0.5 W | 2 | |
| J177 | 2.5 V | 20 mA | 30 V | 0.35 W | 9 |
| 2N3820 | 20 V | 15 mA | 20 V | 0.35 W | 3 |
| J175 | 6 V | 60 mA | 30 V | 0.35 W | 5 |
Closest by the numbers
| Part | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| 2N2608 | 6 V | 5 mA | 30 V | 0.3 W |
| 2N2609 | 6 V | 10 mA | 30 V | 0.3 W |
| 2N5021 | 2.5 V | 3.5 mA | 50 V | 0.5 W |
| 2SJ125 | 10 mA | 50 V | 0.15 W | |
| 2SJ145 | 10 mA | 50 V | 0.15 W | |
| 2SJ498 | 10 mA | 50 V | 0.45 W | |
| 2N3994 | 5.5 V | 10 mA | 25 V | 0.3 W |
| 2N5462 | 6 V | 16 mA | 40 V | 0.35 W |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Ltava Fuzz Wah - modified Vero25×24 Unverified GT310B · KP103K · KT315A · MAX1044 Ltava Fuzz Wah | Ltava Fuzz Wah | Fuzz | Dirtbox Layouts | — | 5 | — | 47 |