component
SI2305A
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
markdownSI2305A
UMW · MOSFETs · SOT-23
SI2305A 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 P-channel MOSFET, with gate-source voltage rated VGS = ±12 V. |
| 2 | S | passive | SOURCE terminal of the -20 V P-channel MOSFET (VDS = -20 V maximum). |
| 3 | D | passive | DRAIN terminal, rated for continuous drain current ID = -4.2 A at TA = 25°C (-3.4 A at TA = 70°C) and pulsed drain current IDM = -10 A. |
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 Voltage | VDS | -20 | V | 1 | |||
| Gate-Source Voltage | VGS | -12 | 12 | V | 1 | ||
| Continuous Drain Current | ID | -4.2 | A | TA=25°C | 1 | ||
| Continuous Drain Current | ID | -3.4 | A | TA=70°C | 1 | ||
| Pulsed Drain Current | IDM | -10 | A | 1 | |||
| Power Dissipation | PD | 1.38 | W | TA=25°C | 1 | ||
| Power Dissipation | PD | 0.8 | W | TA=70°C | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | °C | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 90 | °C/W | 1 | |||
| Drain-Source Breakdown Voltage | VDSS | -20 | V | ID=-10µA, VGS=0V | 2 | ||
| Gate threshold voltage | VGS(th) | -0.5 | V | VDS=VGS, ID=-250μA | 2 | ||
| Gate-body leakage | IGSS | -100 | 100 | nA | VDS=0V, VGS=±12V | 2 | |
| Zero Gate Voltage Drain Current | IDSS | -1 | µA | VDS=-20V, VGS=0V | 2 | ||
| Zero Gate Voltage Drain Current | IDSS | -10 | µA | VDS=-16V, VGS=0V, TJ=55°C | 2 | ||
| On-state drain current | ID(ON) | -6 | A | VDS≤-5V, VGS=-4.5V | 2 | ||
| On-state drain current | ID(ON) | -3 | A | VDS≤-5V, VGS=-2.5V | 2 | ||
| Drain-source on-state resistance | RDS(ON) | 40 | mΩ | VGS=-4.5V, ID=-4.2A | 2 | ||
| Drain-source on-state resistance | RDS(ON) | 60 | mΩ | VGS=-2.5V, ID=-3.4A | 2 | ||
| Continuous source current (diode conduction) | IS | -1.6 | A | 2 | |||
| Diode forward voltage | VSD | -1.2 | V | IS=-1.2A, VGS=0V | 2 |
CAD (KiCad official)
- Symbol:
SI2305A - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
si2305a-etched.step/si2305a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);si2305a.step/si2305a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (7 pp, sha256
13309e8e915ad4e1, 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).