# SD103ATW

**Changjing** · Schottky Diodes · SOT-363

SD103ATW from Changjing, in a SOT-363. 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 | K1 | passive | Cathode of diode 1 (paired with pin 6); each diode is rated 40 V VRRM/VR, 350 mA continuous forward current. |
| 2 | K2 | passive | Cathode of diode 2 (paired with pin 5); each diode is rated 40 V VRRM/VR, 350 mA continuous forward current. |
| 3 | K3 | passive | Cathode of diode 3 (paired with pin 4); each diode is rated 40 V VRRM/VR, 350 mA continuous forward current. |
| 4 | A3 | passive | Anode of diode 3 (paired with pin 3); forward voltage max 0.37 V at IF=20 mA and 0.50 V at IF=100 mA. |
| 5 | A2 | passive | Anode of diode 2 (paired with pin 2); forward voltage max 0.37 V at IF=20 mA and 0.50 V at IF=100 mA. |
| 6 | A1 | passive | Anode of diode 1 (paired with pin 1); forward voltage max 0.37 V at IF=20 mA and 0.50 V at IF=100 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-363 |
| Category | Diodes |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SD103ATW`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `sd103atw-etched.step` / `sd103atw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sd103atw.step` / `sd103atw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603047328915996672) (4 pp, sha256 `89077ea3ff5d8d2a`, 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/sd103atw-datasheet.pdf)