Parts · Transistors
MMBFJ177
Si P-ch JFET SOT-23 SMD.5 circuits use this part. Listed as: Transistor MMBFJ177.
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 |
|---|---|---|---|---|
| MMBFJ177 | 2.5 V | 20 mA | 30 V | 0.225 W |
Used on other boards here
| Part | Vgs max | Id max | Vds | Pd | Boards |
|---|---|---|---|---|---|
| 2N5116 | 25 mA | 30 V | 0.5 W | 2 | |
| J176 | 4.5 V | 25 mA | 30 V | 0.35 W | 1 |
| 2N5461 | 4.5 V | 9 mA | 40 V | 0.35 W | 1 |
| 2N5460 | 4 V | 5 mA | 40 V | 0.35 W | 1 |
| J175 | 6 V | 60 mA | 30 V | 0.35 W | 5 |
Closest by the numbers
| Part | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| 2SJ109 | 20 mA | 30 V | 0.2 W | |
| 2SJ108 | 20 mA | 25 V | 0.2 W | |
| 2SJ74 | 20 mA | 25 V | 0.4 W | |
| 2SJ103 | 14 mA | 50 V | 0.3 W | |
| 2SJ105 | 14 mA | 50 V | 0.2 W | |
| 2SJ106 | 14 mA | 50 V | 0.15 W | |
| 2SJ144 | 14 mA | 50 V | 0.1 W | |
| 2SJ75 | 20 mA | 25 V | 0.4 W |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| C9H13N Tube Overdrive BC547C · BC557C · IRF740 · LND150N3-G 125B | — | Overdrive | HotKits | 125B | 5 | — out | 49 | |
| Enigma Preamp BC547C · BC557C · IRF740 · LND150N3-G Dumble Overdrive Special preamp · 1590XX | Dumble Overdrive Special preamp | Preamp / Amp-in-a-box | HotKits | 1590XX | 10 | $28.00 | 65 | |
| Mr. Gator Preamp BC547 · BC557 · BF245 · IPA60R180P7S Laboga Mr. Hector preamp · 1590XX | Laboga Mr. Hector preamp | Preamp / Amp-in-a-box | HotKits | 1590XX | 9 | — out | 67 | |
| Twilight Warrior Preamp v.3 BC547C · BC557C · IRF740 · LND150N3-G Peavey 5150 preamp · 1590XX | Peavey 5150 preamp | Preamp / Amp-in-a-box | HotKits | 1590XX | 8 | $26.00 | 61 | |
| Vesuvius Preamp BC847C · BC857C · IPA60R180P7S · LND150N3-G 1590BB2 | — | Preamp / Amp-in-a-box | HotKits | 1590BB2 | 6 | $16.00 | 61 |