# LY23EA05

**Liown** · ESD And Surge Protection (TVS/ESD) · SOT-23

LY23EA05 from Liown, 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 | I/O1 | passive | Protected uni-directional I/O line 1 (diode cathode), clamped to pin 3 ground with VRWM 5V and 8V max clamping at IPP = 1A. |
| 2 | I/O2 | passive | Protected uni-directional I/O line 2 (diode cathode), clamped to pin 3 ground with VRWM 5V and 14V max clamping at IPP = 23A (8/20µs). |
| 3 | GND | power_in | Common ground connection (diode anodes) to which both I/O pins are clamped. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Liown |
| Package | SOT-23 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power (8/20µs) | Ppk |  |  | 320 | W | 8/20µs | 2 |
| Peak Pulse Current (8/20µs) | Ipp |  |  | 23 | A | 8/20µs | 2 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Air) | 2 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Contact) | 2 |
| Operating Temperature Range | TJ | -55 |  | 125 | °C |  | 2 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 2 |
| Reverse Working Voltage | VRWM |  |  | 5 | V |  | 2 |
| Reverse Breakdown Voltage | VBR | 6 |  |  | V | IT = 1mA | 2 |
| Reverse Leakage Current | IR |  |  | 0.5 | µA | VRWM = 5V, any I/O pin to ground | 2 |
| Clamping Voltage (IPP = 1A) | VC |  |  | 8 | V | IPP = 1A (8 x 20µs pulse), any I/O pin to ground | 2 |
| Clamping Voltage (IPP = 23A) | VC |  |  | 14 | V | IPP = 23A (8 x 20µs pulse), any I/O pin to ground | 2 |
| Junction Capacitance | CJ |  |  | 160 | pF | VR = 0V, f = 1MHz, any I/O pin to ground | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin |  Lead Finish: Matte Tin  Case Material: “Green” Molding Compound. | 1 |

## CAD (KiCad official)

- Symbol: `LY23EA05`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ly23ea05-etched.step` / `ly23ea05-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ly23ea05.step` / `ly23ea05.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Liown datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590235759530971136) (5 pp, sha256 `b3f33f5bdadb2f4e`, retrieved 2026-10-18, 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/ly23ea05-datasheet.pdf)