Parts · Transistors
2SK170
Si N-ch JFET TO-92 TH.10 circuits use this part. Listed as: JFET transistor, N-channel; Transistor 2SK170.
Datasheet · archived copy from Toshiba; the part is discontinued and the maker no longer publishes it
Substitutes N-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 |
|---|---|---|---|---|
| 2SK170 | 20 mA | 40 V | 0.2 W |
Used on other boards here
| Part | Vgs max | Id max | Vds | Pd | Boards |
|---|---|---|---|---|---|
| PF5102 | 1.6 V | 20 mA | 40 V | 0.625 W | 40 |
| 2N4860 | 6 V | 20 mA | 30 V | 0.36 W | 1 |
| 2N5245 | 1 V | 15 mA | 30 V | 0.35 W | 1 |
| NTE458 | 20 mA | 50 V | 0.25 W | 2 | |
| BF256C | 30 V | 18 mA | 30 V | 0.35 W | 2 |
| 2SK304 | 4 V | 20 mA | 30 V | 0.15 W | 1 |
| 2N4416 | 30 V | 30 mA | 30 V | 0.3 W | 1 |
| 2SK117 | 14 mA | 50 V | 0.3 W | 42 |
Closest by the numbers
| Part | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| 2SK364 | 20 mA | 40 V | 0.4 W | |
| 2SK366 | 20 mA | 40 V | 0.2 W | |
| 2SK240 | 20 mA | 40 V | 0.4 W | |
| 2N4223 | 7 V | 20 mA | 30 V | 0.3 W |
| 2N4224 | 7.5 V | 20 mA | 30 V | 0.3 W |
| 2SK662 | 20 mA | 30 V | 0.15 W | |
| 2N4857 | 6 V | 20 mA | 40 V | 0.36 W |
| 2SK369 | 20 mA | 40 V | 0.4 W |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Mad Professor Little Green Wonder w. mods Vero18×14 Verified 2SK170 · LF353 Mad Professor Little Green Wonder | Mad Professor Little Green Wonder | Overdrive | Dirtbox Layouts | — | 4 | — | 22 | |
| Distortion Supreme 2N3904 · 2N3906 · 2SK170 · TL072 Boss MD-2 Mega Distortion · 125B | Boss MD-2 Mega Distortion | Distortion | Effects Layouts | 125B | 5 | $10.00 | 97 | |
| Mad Professor Forest Green Compressor Perfboard Unverified 2SK170 · 78L05 · AD797 · BC550C Mad Professor Forest Green Compressor | Mad Professor Forest Green Compressor | Compressor | Effects Layouts (blog) | — | 3 | — | 39 | |
| Sabotage Overdrive 2SK170 · BC550C Catalinbread Sabbra Cadabra · 1590B | Catalinbread Sabbra Cadabra | Overdrive | HotKits | 1590B | 4 | — out | 33 | |
| Virile Boost 2SK170 Fuchs Plush Pure Gain · 125B | Fuchs Plush Pure Gain | Fuzz | PedalPCB | 125B | 1 | $8.00 | 17 | |
| Fred Briggs Hummingbird Overdrive De'luxe Vero 2N7000 · 2SK117 · 2SK170 · BS170 Fred Briggs Hummingbird Overdrive Deluxe | Fred Briggs Hummingbird Overdrive Deluxe | Overdrive | Revolution Deux | — | 5 | — | 54 | |
| Mad Professor Forest Green Compressor Vero 2SK170 · 78L05 · AD797 · BC550C Mad Professor Forest Green Compressor | Mad Professor Forest Green Compressor | Compressor | Revolution Deux | — | 3 | — | 62 | |
| Mad Professor Little Green Wonder 2SK170 · TLC272 Mad Professor Little Green Wonder | Mad Professor Little Green Wonder | Overdrive | Revolution Deux | — | 3 | — | 38 | |
| BJFE Little Green Wonder Vero21×12 Verified 2SK170 · TLC272 BJFe Little Green Wonder | BJFe Little Green Wonder | Overdrive | Tagboard Effects | — | 3 | — | 21 | |
| Mad Professor Forest Green Compressor Vero21×22 Verified 2SK170 · 78L05 · AD797 · BC550C Mad Professor Forest Green Compressor · 1590B | Mad Professor Forest Green Compressor | Compressor | Tagboard Effects | 1590B | 3 | — | 40 |