# TS1811LD-CX

**Shenzhen JingYang** · ESD And Surge Protection (TVS/ESD) · SOD-523

TS1811LD-CX from Shenzhen JingYang, in a SOD-523. 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 | I/O | passive | Protected I/O line of the 1-line uni-directional TVS (18V working voltage, 18V min / 19V typ breakdown at 1mA, 35V max clamping), ESD rated ±30kV air/contact per IEC 61000-4-2. |
| 2 | GND | power_in | Ground reference pin of the uni-directional TVS diode, connected to circuit ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JingYang |
| Package | SOD-523 |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse Working Voltage | VRWM |  |  | 18 | V |  | 2 |
| Reverse Leakage Current | IR |  | 0.01 | 0.1 | μA | VRWM = 18V, T = 25C | 2 |
| Breakdown Voltage | VBR | 18 |  | 19 | V | IT = 1mA | 2 |
| Clamping Voltage | VC |  |  | 35 | V | tp = 8/20μs | 2 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 |  | 30 | kV |  | 2 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 |  | 30 | kV |  | 2 |
| Peak Pulse Power | PPk |  |  | 400 | W | 8/20μs | 2 |
| Storage/Operating Temperature | TSTG, TOPT | -55 |  | 150 | °C |  | 2 |
| Lead Soldering Temperature | TL |  |  | 260 | °C | 10 sec. | 2 |

## CAD (KiCad official)

- Symbol: `TS1811LD-CX`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `ts1811ld-cx-etched.step` / `ts1811ld-cx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ts1811ld-cx.step` / `ts1811ld-cx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JingYang datasheet](docs/ts1811ld-cx-datasheet.pdf) (4 pp, sha256 `999cdbc8b6dc631d`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/ts1811ld-cx-datasheet.pdf)