# LY323BC1524L

**Liown** · ESD And Surge Protection (TVS/ESD) · SOD-323

LY323BC1524L from Liown, in a SOD-323. 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 | Pin 1 | passive | Terminal of the asymmetric TVS; in the Pin 1 to Pin 2 direction VRWM is 15V max, VBR is 17.1V min at 1mA, and peak pulse current is 5A (8/20µs). |
| 2 | Pin 2 | passive | Terminal of the asymmetric TVS; in the Pin 2 to Pin 1 direction VRWM is 24V max, VBR is 25.4V min at 1mA, and peak pulse current is 3A (8/20µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Liown |
| Package | SOD-323 |
| 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 (Pin1 to Pin2) | VRWM |  |  | 15 | V | Pin1 to Pin2 | 2 |
| Breakdown Voltage (Pin1 to Pin2) | VBR | 17.1 |  |  | V | IT = 1mA | 2 |
| Reverse Leakage Current (Pin1 to Pin2) | IR |  |  | 50 | nA | VRWM = 15V | 2 |
| Clamping Voltage (Pin1 to Pin2) | VC |  |  | 25 | V | IPP = 1A (8/20µs) | 2 |
| Clamping Voltage (Pin1 to Pin2) | VC |  |  | 35 | V | IPP = 5A (8/20µs) | 2 |
| Junction Capacitance (Pin1 to Pin2) | CJ |  |  | 13 | pF | VR = 0V, f = 1MHz | 2 |
| Reverse Working Voltage (Pin2 to Pin1) | VRWM |  |  | 24 | V | Pin2 to Pin1 | 2 |
| Breakdown Voltage (Pin2 to Pin1) | VBR | 25.4 |  |  | V | IT = 1mA | 2 |
| Reverse Leakage Current (Pin2 to Pin1) | IR |  |  | 50 | nA | VRWM = 7V | 2 |
| Clamping Voltage (Pin2 to Pin1) | VC |  |  | 35 | V | IPP = 1A (8/20µs) | 2 |
| Clamping Voltage (Pin2 to Pin1) | VC |  |  | 50 | V | IPP = 3A (8/20µs) | 2 |
| Junction Capacitance (Pin2 to Pin1) | CJ |  |  | 13 | pF | VR = 0V, f = 1MHz | 2 |
| Peak Pulse Power | PPP |  |  | 160 | W | 8/20µs, TA=25℃ | 2 |
| Peak Pulse Current, Pin 1 to Pin 2 | IPP |  |  | 5 | A | tp = 8/20μs | 2 |
| Peak Pulse Current, Pin 2 to Pin 1 | IPP |  |  | 3 | A | 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 |
| Ambient Temperature Range | TA | -55 |  | 125 | ℃ |  | 2 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `LY323BC1524L`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `ly323bc1524l-etched.step` / `ly323bc1524l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ly323bc1524l.step` / `ly323bc1524l.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/8603108117576507392) (5 pp, sha256 `afe612f578dbe257`, 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/ly323bc1524l-datasheet.pdf)