# LAD52C05L01

**Brightking Elec (TAIWAN)** · ESD Protection Devices · SOD-523

LAD52C05L01 from Brightking Elec (TAIWAN), 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 | 1 | passive | Terminal 1 of the two-terminal ESD TVS per the Pin Configuration figure; for the LAD52C05L01 (marking A5) the datasheet gives reverse stand-off voltage VRWM 5 V, breakdown VBR 5.6 V at IBR 1 mA, and clamping VC 9.8 V at IPP 1 A (tp=8/20μs), but no per-pin function or polarity. |
| 2 | 2 | passive | Terminal 2 of the two-terminal ESD TVS per the Pin Configuration figure; the datasheet states no per-pin function or polarity, and the device-level off-state junction capacitance CJ is 12 pF typical at 0 Vdc, f=1 MHz. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Brightking Elec (TAIWAN) |
| 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 |
|---|---|---|---|---|---|---|---|
| ESD voltage (Contact discharge) | VESD | -8 |  | 8 | kV |  | 1 |
| ESD voltage (Air discharge) | VESD | -15 |  | 15 | kV |  | 1 |
| Storage & operating temperature range | TSTG, TJ | -55 |  | 150 | ℃ |  | 1 |
| Reverse stand-off voltage | VRWM |  |  | 5 | V |  | 2 |
| Reverse breakdown voltage | VBR | 5.6 |  |  | V | IBR=1mA | 2 |
| Reverse leakage current | IR |  |  | 1 | μA | VR=5V | 2 |
| Clamping voltage (tp=8/20μs) | VC |  |  | 9.8 | V | tp=8/20μs, IPP=1A | 2 |
| Off state junction capacitance | CJ |  | 12 |  | pF | 0Vdc, f=1MHz | 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 Free/RoHS compliant ● Solder reflow temperature: Pure Tin-Sn, 260~270℃ | 1 |

## CAD (KiCad official)

- Symbol: `LAD52C05L01`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `lad52c05l01-etched.step` / `lad52c05l01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lad52c05l01.step` / `lad52c05l01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Brightking Elec (TAIWAN) datasheet](docs/lad52c05l01-datasheet.pdf) (4 pp, sha256 `c50cdfcf01860206`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/lad52c05l01-datasheet.pdf)