component
MMBFU310LT1G
Public Made by Adomby adom
onsemi JFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMMBFU310LT1G
onsemi · JFETs · SOT-23
MMBFU310LT1G from onsemi, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | DRAIN | passive | Drain terminal of the N-channel JFET; drain-source voltage VDS is rated at 25 Vdc maximum. |
| 2 | SOURCE | passive | Source terminal of the N-channel JFET, the reference for gate-source voltage VGS rated at 25 Vdc maximum. |
| 3 | GATE | input | Gate terminal of the N-channel JFET with gate current IG rated at 10 mAdc maximum and gate-source cutoff voltage of -2.5 to -6.0 Vdc. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Transistors |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDS | 25 | Vdc | 1 | |||
| Gate-Source Voltage | VGS | 25 | Vdc | 1 | |||
| Gate Current | IG | 10 | mAdc | 1 | |||
| Total Device Dissipation | PD | 225 | mW | FR-5 Board, TA = 25°C | 1 | ||
| Derate above 25°C | 1.8 | mW/°C | FR-5 Board | 1 | |||
| Thermal Resistance, Junction-to-Ambient | RθJA | 556 | °C/W | 1 | |||
| Junction and Storage Temperature | TJ, Tstg | -55 | 150 | °C | 1 | ||
| Gate-Source Breakdown Voltage | V(BR)GSS | -25 | Vdc | IG = -1.0 Adc, VDS = 0 | 2 | ||
| Gate 1 Leakage Current | IG1SS | -150 | pA | VGS = -15 Vdc, VDS = 0 | 2 | ||
| Gate 2 Leakage Current | IG2SS | -150 | nAdc | VGS = -15 Vdc, VDS = 0, TA = 125°C | 2 | ||
| Gate Source Cutoff Voltage | VGS(off) | -2.5 | -6 | Vdc | VDS = 10 Vdc, ID = 1.0 nAdc | 2 | |
| Zero-Gate-Voltage Drain Current | IDSS | 24 | 60 | mAdc | VDS = 10 Vdc, VGS = 0 | 2 | |
| Gate-Source Forward Voltage | VGS(f) | 1 | Vdc | IG = 10 mAdc, VDS = 0 | 2 | ||
| Forward Transfer Admittance | /Yfs/ | 10 | 18 | mmhos | VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz | 2 | |
| Output Admittance | /yos/ | 250 | mhos | VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz | 2 | ||
| Input Capacitance | Ciss | 5 | pF | VGS = -10 Vdc, VDS = 0 Vdc, f = 1.0 MHz | 2 | ||
| Reverse Transfer Capacitance | Crss | 2.5 | pF | VGS = -10 Vdc, VDS = 0 Vdc, f = 1.0 MHz | 2 |
CAD (KiCad official)
- Symbol:
MMBFU310LT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbfu310lt1g-etched.step/mmbfu310lt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbfu310lt1g.step/mmbfu310lt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (4 pp, sha256
9657f54bb1fd4566, retrieved 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).