# UBD32C05L01

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

UBD32C05L01 from Brightking, 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 | 1 | passive | Terminal 1 of the single-line ESD protection diode (protects one I/O line, 5V working voltage); the datasheet text does not state its polarity or function. |
| 2 | 2 | passive | Terminal 2 of the single-line ESD protection diode (protects one I/O line, 5V working voltage); the datasheet text does not state its polarity or function. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak pulse current | IPP |  |  | 3 | A | tp=8/20μs waveform | 1 |
| ESD voltage (contact discharge) | VESD | -8 |  | 8 | kV | Contact discharge | 1 |
| ESD voltage (air discharge) | VESD | -15 |  | 15 | kV | Air discharge | 1 |
| Storage & operating temperature range | TSTG, TJ | -55 |  | 150 | ℃ |  | 1 |
| Reverse stand-off voltage | VRWM |  |  | 5 | V | TJ=25℃ | 2 |
| Reverse breakdown voltage | VBR | 6 |  |  | V | IBR=1mA | 2 |
| Reverse leakage current | IR |  |  | 1 | μA | VR=5V | 2 |
| Clamping voltage | VC |  |  | 11 | V | IPP=1A, tp=8/20μs | 2 |
| Clamping voltage | VC |  |  | 20 | V | IPP=3A, tp=8/20μs | 2 |
| Off state junction capacitance | CJ |  |  | 0.4 | 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: `UBD32C05L01`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `ubd32c05l01-etched.step` / `ubd32c05l01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ubd32c05l01.step` / `ubd32c05l01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Brightking datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588913423102566400) (4 pp, sha256 `68075328af789900`, 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/ubd32c05l01-datasheet.pdf)