# SE1003

**SINO IC** · MOSFETs · SOT-23

SE1003 from SINO IC, 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 of the N-channel MOSFET, with VGS rated ±20 V and threshold VGS(th) of 1.2 V min, 1.8 V typ, 2.5 V max at ID=250μA. |
| 2 | S | passive | Source of the N-channel MOSFET, the reference terminal for the VGS and VDS ratings. |
| 3 | D | passive | Drain of the N-channel MOSFET, with VDS rated 100 V and continuous drain current ID of 3 A (20 A pulsed). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SINO IC |
| 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 | BVDSS | 100 |  |  | V | ID=250μA, VGS=0 | 2 |
| Drain to Source Leakage Current | IDSS |  |  | 1 | μA | VDS=100V, VGS=0V | 2 |
| Gate-Body Leakage Current | IGSS |  |  | 100 | nA | VGS=20V | 2 |
| Gate Threshold Voltage | VGS(th) | 1.2 | 1.8 | 2.5 | V | VDS= VGS, ID=250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 230 | 250 | mΩ | VGS=10V, ID=1A | 2 |
| Drain-Source Voltage | VDS |  |  | 100 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Drain Current Continuous | ID |  |  | 3 | A |  | 1 |
| Drain Current Pulsed | ID |  |  | 20 | A |  | 1 |
| Total Power Dissipation | PD |  |  | 1.5 | W | @TA=25℃ | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 175 | ℃ |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  |  | 100 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `SE1003`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `se1003-etched.step` / `se1003-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `se1003.step` / `se1003.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SINO IC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588916100768022528) (7 pp, sha256 `bd5a83fa676965dc`, retrieved 2026-10-17, 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/se1003-datasheet.pdf)