component
SI2309A
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
markdownSI2309A
UMW · MOSFETs · SOT-23
SI2309A 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 -60 V P-channel MOSFET; gate-source voltage is rated VGS = ±20 V. |
| 2 | S | passive | SOURCE terminal of the P-channel MOSFET; drain-source voltage is rated VDS = -60 V. |
| 3 | D | passive | DRAIN terminal of the P-channel MOSFET; continuous drain current is rated ID = -1.25 A at TA = 25°C (surface mounted, steady state). |
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 | VDSS | -60 | V | ID=-250µA, VGS=0V | 2 | ||
| Gate-Body leakage current | IGSS | -100 | 100 | nA | VDS=0V, VGS=±20V | 2 | |
| Gate Threshold Voltage | VGS(th) | -1 | -3 | V | VDS=VGS, ID=-250μA | 2 | |
| On state drain current | ID(ON) | -6 | A | VGS=-4.5V, VDS=-10A | 2 | ||
| Zero Gate Voltage Drain Current | IDSS | -1 | µA | VDS=-48V, VGS=0V | 2 | ||
| Zero Gate Voltage Drain Current | IDSS | -50 | µA | VDS=-48V,VGS=0V,TJ=125°C | 2 | ||
| Static Drain-Source On-Resistance | RDS(ON) | 340 | mΩ | VGS=-10V, ID=-1.25A | 2 | ||
| Static Drain-Source On-Resistance | RDS(ON) | 550 | mΩ | VGS=-4.5V, ID=-1A | 2 | ||
| Maximum Body-Diode Continuous Current | IS | -1.25 | A | 2 | |||
| Diode Forward Voltage | VSD | -0.82 | -1.2 | V | IS=-1.25A, VGS=0V | 2 | |
| Total Gate Charge | Qg | 5.4 | 12 | nC | VGS=-10V, VDS=-30V, ID=-1.25A | 2 | |
| Turn-On Delay Time | tD(on) | 10.5 | 20 | ns | 2 | ||
| Turn-On Rise Time | tr | 11.5 | 20 | ns | 2 | ||
| Turn-Off Delay Time | tD(off) | 15.5 | 30 | ns | 2 | ||
| Turn-Off Fall Time | tf | 7.5 | 15 | ns | 2 | ||
| Body Diode Reverse Recovery Time | trr | 30 | 55 | ns | IF=-1.25A, dI/dt=100A/μs | 2 | |
| Forward Transconductance | gFS | 1.9 | S | VDS=-4.5V, ID=-1A | 2 | ||
| Input Capacitance | Ciss | 270 | pF | VGS=0V, VDS=-25V, f=1MHz | 2 | ||
| Output Capacitance | Coss | 170 | pF | VGS=0V, VDS=-25V, f=1MHz | 2 | ||
| Reverse Transfer Capacitance | Crss | 31 | pF | VGS=0V, VDS=-25V, f=1MHz | 2 | ||
| Gate Source Charge | Qgs | 1.15 | nC | 2 | |||
| Gate Drain Charge | Qgd | 0.92 | nC | 2 | |||
| Drain-Source Voltage | VDS | -60 | V | 1 | |||
| Gate-Source Voltage | VGS | -20 | 20 | V | 1 | ||
| Continuous Drain Current | ID | -1.25 | A | TA=25°C | 1 | ||
| Continuous Drain Current | ID | -0.85 | A | TA=70°C | 1 | ||
| Pulsed Drain Current | IDM | -8 | A | 1 | |||
| Avalanche Current | IAS | -5 | A | L=0.1mH | 1 | ||
| Power Dissipation | PD | 1.25 | W | TA=25°C | 1 | ||
| Power Dissipation | PD | 0.8 | W | TA=70°C | 1 | ||
| Junction Temperature | TJ | 150 | °C | 1 | |||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 1 | ||
| Thermal Resistance Junction-to-Ambient | RthJA | 100 | °C/W | t ≤ 5 sec, surface mounted on FR4 | 1 | ||
| Thermal Resistance Junction-to-Ambient | RthJA | 166 | °C/W | Steady State, surface mounted on FR4 | 1 | ||
| Thermal Resistance Junction-to-Ambient (per unit base, transient curve note) | RthJA | 130 | °C/W | Per Unit Base, note 2 of normalized transient impedance curve | 5 |
CAD (KiCad official)
- Symbol:
SI2309A - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
si2309a-etched.step/si2309a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);si2309a.step/si2309a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (8 pp, sha256
48baeff8d5273885, 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).