Parts · Transistors
BF245
Si N-ch JFET TO-92 TH.10 circuits use this part. Listed as: Transistor BF245.
Datasheet · from onsemi.com
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 |
|---|---|---|---|---|
| BF245A | 6.5 mA | 30 V | 0.35 W |
Used on other boards here
| Part | Vgs max | Id max | Vds | Pd | Boards |
|---|---|---|---|---|---|
| 2N5246 | 4 V | 7 mA | 30 V | 0.35 W | 1 |
| 2N5952 | 3 V | 8 mA | 30 V | 0.36 W | 67 |
| PN4302 | 4 V | 5 mA | 30 V | 0.625 W | 1 |
| 2N5953 | 2.5 V | 5 mA | 30 V | 0.36 W | 1 |
| 2N5457 | 2.5 V | 5 mA | 25 V | 0.625 W | 563 |
| 2N5458 | 3.5 V | 9 mA | 25 V | 0.625 W | 88 |
| J202 | 4 V | 4.5 mA | 40 V | 0.625 W | 9 |
| 2N5245 | 1 V | 15 mA | 30 V | 0.35 W | 1 |
Closest by the numbers
| Part | Vgs max | Id max | Vds | Pd |
|---|---|---|---|---|
| 2N5196 | 4 V | 7 mA | 50 V | 0.5 W |
| 2N5197 | 4 V | 7 mA | 50 V | 0.5 W |
| 2N5198 | 4 V | 7 mA | 50 V | 0.5 W |
| 2N5199 | 4 V | 7 mA | 50 V | 0.5 W |
| J305 | 3 V | 8 mA | 30 V | 0.35 W |
| 2N4869 | 5 V | 7.5 mA | 40 V | 0.3 W |
| 2N5515 | 3.8 V | 7.5 mA | 40 V | 0.375 W |
| 2N5516 | 3.8 V | 7.5 mA | 40 V | 0.375 W |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Boss HM-2 Heavy Metal Perfboard Verified 2SA970 · 2SC2240 · BF245 · TL072 Boss HM-2 Heavy Metal · 125B | Boss HM-2 Heavy Metal | Distortion | Effects Layouts (blog) | 125B | 5 | — | 40 | |
| Noise Gate Perfboard Verified 2N3904 · 741 · BF245 Noise Gate · 1590B | Noise Gate | Noise Gate | Effects Layouts (blog) | 1590B | 2 | — | 30 | |
| Guitar Frequency doubleur 2N3820 · BF245 · CA3080 · S042P | — | Vibrato / Chorus | Experimentalists Anonymous | — | — | — | 70 | |
| 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 | |
| Old Sparky Preamp BC547 · BC557 · BF245 · IPA60R180P7S Friedman BE Deluxe & Small Box preamp · 1590XX | Friedman BE Deluxe & Small Box preamp | Preamp / Amp-in-a-box | HotKits | 1590XX | 9 | $27.00 | 63 | |
| Moody Tremolo BC550C · BF245 | — | Tremolo | Moody Sounds | — | 3 | kr695.00 out | 26 | |
| Boss HM-2 Heavy Metal Vero20×26 Verified 2SA970 · 2SC2240 · BF245 · M5216 Boss HM-2 Heavy Metal · 1590B | Boss HM-2 Heavy Metal | Distortion | Tagboard Effects | 1590B | 4 | — | 40 | |
| Boss HM-2 Heavy Metal Lite Vero Verified 2SA970 · 2SC2240 · BF245 · M5216 Boss HM-2 Heavy Metal Lite · 1590B | Boss HM-2 Heavy Metal Lite | Distortion | Tagboard Effects | 1590B | 4 | — | 33 | |
| Seamoon Funk Machine V2 with buffered blend Vero18×15 Verified 1458 · 2N5088 · BF245 · LM1458 Seamoon Funk Machine V2 | Seamoon Funk Machine V2 | EQ / Filter | Tagboard Effects | — | 3 | — | 22 | |
| Split 'n' Blend Vero Verified BF245 Split 'n Blend | Split 'n Blend | Utility | Tagboard Effects | — | 1 | — | 6 |