component
SI2303
Public Made by Adomby adom
UMW MOSFETs, 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
markdownSI2303
UMW · MOSFETs · SOT-23
SI2303 from UMW, 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 | G | input | GATE terminal of the -30 V P-channel MOSFET; gate-source voltage is rated ±20 V per the absolute maximum ratings. |
| 2 | S | passive | SOURCE terminal; continuous source-drain (body diode) current IS is rated -1 A and pulsed diode forward current ISM is rated -10 A. |
| 3 | D | passive | DRAIN terminal; drain-source voltage VDS is rated -30 V and continuous drain current ID is rated -1.7 A at TA = 25°C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| 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 breakdown voltage | V(BR)DSS | -30 | V | VGS=0V, ID=-250µA | 2 | ||
| Gate-source threshold voltage | VGS(th) | -1 | -3 | V | VDS=VGS, ID=-250µA | 2 | |
| Gate-source leakage | IGSS | -100 | 100 | nA | VDS=0V, VGS=±20V | 2 | |
| Zero gate voltage drain current | IDSS | -1 | µA | VDS=-30V, VGS=0V | 2 | ||
| Drain-source on-state resistance | RDS(ON) | 80 | 120 | mΩ | VGS=-10V, ID=-1.7A | 2 | |
| Drain-source on-state resistance | RDS(ON) | 100 | 150 | mΩ | VGS=-4.5V, ID=-1.3A | 2 | |
| Diode forward voltage | VSD | -0.8 | -1.2 | V | IS=-1A, VGS=0V | 2 | |
| Continuous Source-Drain Diode Current | IS | -1 | A | TC=25°C | 2 | ||
| Pulsed Diode forward Current | ISM | -10 | A | TC=25°C | 2 | ||
| Drain-Source Voltage | VDS | -30 | V | TA=25°C | 1 | ||
| Gate-Source Voltage | VGS | -20 | 20 | V | TA=25°C | 1 | |
| Continuous Drain Current | ID | -1.7 | A | TA=25°C | 1 | ||
| Pulsed Drain Current | IDM | -10 | A | TA=25°C | 1 | ||
| Continuous Source-Drain Current (Diode Conduction) | IS | -1 | A | TA=25°C | 1 | ||
| Power Dissipation | PD | 0.9 | W | TA=25°C | 1 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 357 | °C/W | t≤5s, surface mounted on FR4 board | 1 | ||
| Operating Junction Temperature | TJ | 150 | °C | 1 | |||
| Storage Temperature | TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SI2303 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
si2303-etched.step/si2303-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);si2303.step/si2303.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (7 pp, sha256
52635b558501f58c, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).