# IRLML5203

**Guangdong Hottech** · MOSFETs · SOT-23

IRLML5203 from Guangdong Hottech, 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; controls the P-channel MOSFET, with VGS rated ±20 V and a threshold of -1.0 to -2.5 V at ID = -250µA. |
| 2 | S | passive | Source; carries the continuous body-diode current of up to -1.3 A and is the reference for VGS. |
| 3 | D | passive | Drain; rated for VDS of -30 V and continuous drain current of -3.0 A at TA = 25°C (-2.4 A at 70°C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Guangdong Hottech |
| 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 |  |  | -30 | V |  | 1 |
| Continuous Drain Current, TA = 25°C | ID |  |  | -3 | A | VGS @ -10V, TA = 25°C | 1 |
| Continuous Drain Current, TA = 70°C | ID |  |  | -2.4 | A | VGS @ -10V, TA = 70°C | 1 |
| Pulsed Drain Current | IDM |  |  | -24 | A |  | 1 |
| Power Dissipation, TA = 25°C | PD |  |  | 1.25 | W | TA = 25°C | 1 |
| Power Dissipation, TA = 70°C | PD |  |  | 0.8 | W | TA = 70°C | 1 |
| Linear Derating Factor |  |  |  | 10 | mW/°C |  | 1 |
| Gate-to-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Maximum Junction-to-Ambient Thermal Resistance | RJA |  |  | 100 | °C/W |  | 1 |
| Drain-to-Source Breakdown Voltage | V(BR)DSS | -30 |  |  | V | VGS = 0V, ID = -250µA | 1 |
| Static Drain-to-Source On-Resistance | RDS(on) |  |  | 98 | mΩ | VGS = -10V, ID = -3.0A | 1 |
| Static Drain-to-Source On-Resistance | RDS(on) |  |  | 165 | mΩ | VGS = -4.5V, ID = -2.6A | 1 |
| Gate Threshold Voltage | VGS(th) | -1 |  | -2.5 | V | VDS = VGS, ID = -250µA | 1 |
| Forward Transconductance | gfs | 3.1 |  |  | S | VDS = -10V, ID = -3.0A | 1 |
| Drain-to-Source Leakage Current | IDSS |  |  | -1 | µA | VDS = -24V, VGS = 0V | 1 |
| Drain-to-Source Leakage Current | IDSS |  |  | -5 | µA | VDS = -24V, VGS = 0V, TJ = 70°C | 1 |
| Gate-to-Source Forward Leakage | IGSS |  |  | -100 | nA | VGS = -20V | 1 |
| Gate-to-Source Reverse Leakage | IGSS |  |  | 100 | nA | VGS = 20V | 1 |
| Total Gate Charge | Qg |  | 9.5 | 14 | nC | ID = -3.0A, VDS = -24V, VGS = -10V | 1 |
| Gate-to-Source Charge | Qgs |  | 2.3 | 3.5 | nC |  | 1 |
| Gate-to-Drain (Miller) Charge | Qgd |  | 1.6 | 2.4 | nC |  | 1 |
| Continuous Source Current (Body Diode) | IS |  |  | -1.3 | A |  | 1 |
| Pulsed Source Current (Body Diode) | ISM |  |  | -24 | A |  | 1 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | TJ = 25°C, IS = -1.3A, VGS = 0V | 1 |
| Reverse Recovery Time | trr |  | 17 | 26 | ns | TJ = 25°C, IF = -1.3A | 1 |
| Reverse Recovery Charge | Qrr |  | 12 | 18 | nC | di/dt = -100A/µs | 1 |

## CAD (KiCad official)

- Symbol: `IRLML5203`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `irlml5203-etched.step` / `irlml5203-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `irlml5203.step` / `irlml5203.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Guangdong Hottech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603120180537417728) (6 pp, sha256 `73560baa3c40926e`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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).

[Datasheet PDF](docs/irlml5203-datasheet.pdf)