component
MMBF4393LT3G
Public Made by Adomby adom
onsemi JFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownMMBF4393LT3G
onsemi · JFETs · SOT-23
MMBF4393LT3G 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 of the N-channel JFET; VDS max 30 Vdc and VDG max 30 Vdc. |
| 2 | SOURCE | passive | Source of the N-channel JFET switching transistor. |
| 3 | GATE | passive | Gate of the N-channel JFET; VGS max 30 Vdc and forward gate current IG(f) max 50 mAdc. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Gate-Source Breakdown Voltage | V(BR)GSS | 30 | Vdc | IG = 1.0 Adc, VDS = 0 | 2 | ||
| Gate Reverse Current | IGSS | 1 | nAdc | VGS = 15 Vdc, VDS = 0, TA = 25°C | 2 | ||
| Gate Reverse Current | IGSS | 0.2 | Adc | VGS = 15 Vdc, VDS = 0, TA = 100°C | 2 | ||
| Gate-Source Cutoff Voltage | VGS(off) | -0.5 | -3 | Vdc | VDS = 15 Vdc, ID = 10 nAdc, MMBF4393LT1 | 2 | |
| Off-State Drain Current | ID(off) | 1 | nAdc | VDS = 15 Vdc, VGS = -12 Vdc | 2 | ||
| Off-State Drain Current | ID(off) | 1 | Adc | VDS = 15 Vdc, VGS = -12 Vdc, TA = 100°C | 2 | ||
| Zero-Gate-Voltage Drain Current | IDSS | 5 | 30 | mAdc | VDS = 15 Vdc, VGS = 0, MMBF4393LT1 | 2 | |
| Drain-Source On-Voltage | VDS(on) | 0.4 | Vdc | ID = 3.0 mAdc, VGS = 0, MMBF4393LT1 | 2 | ||
| Static Drain-Source On-Resistance | rDS(on) | 100 | Ω | ID = 1.0 mAdc, VGS = 0, MMBF4393LT1 | 2 | ||
| Input Capacitance | Ciss | 14 | pF | VDS = 0 Vdc, VGS = -15 Vdc, f = 1.0 MHz | 2 | ||
| Reverse Transfer Capacitance | Crss | 3.5 | pF | VDS = 0 Vdc, VGS = -12 Vdc, f = 1.0 MHz | 2 | ||
| Drain-Source Voltage | VDS | 30 | Vdc | 1 | |||
| Drain-Gate Voltage | VDG | 30 | Vdc | 1 | |||
| Gate-Source Voltage | VGS | 30 | Vdc | 1 | |||
| Forward Gate Current | IG(f) | 50 | mAdc | 1 | |||
| Total Device Dissipation | PD | 225 | mW | FR-5 Board (Note 1), TA = 25°C | 1 | ||
| Derate above 25°C | PD | 1.8 | mW/°C | FR-5 Board (Note 1) | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RJA | 556 | °C/W | 1 | |||
| Junction and Storage Temperature Range | TJ, Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
MMBF4393LT3G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbf4393lt3g-etched.step/mmbf4393lt3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbf4393lt3g.step/mmbf4393lt3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (7 pp, sha256
356282c59bace272, retrieved 2026-10-23, 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).