# CESD12VD5

**Changjiang Electronics Tech (CJ)** · ESD Protection Devices · SOD-523

CESD12VD5 from Changjiang Electronics Tech (CJ), 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjiang Electronics Tech (CJ) |
| 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 |
|---|---|---|---|---|---|---|---|
| IEC 61000-4-2 ESD Voltage, Air Model | VESD | -25 |  | 25 | kV |  | 2 |
| IEC 61000-4-2 ESD Voltage, Contact Model | VESD | -25 |  | 25 | kV |  | 2 |
| ESD Voltage Per Human Body Model (JESD22-A114-B) |  | -16 |  | 16 |  |  | 2 |
| ESD Voltage Machine Model |  | -0.4 |  | 0.4 |  |  | 2 |
| Peak Pulse Power | PPP |  |  | 220 | W |  | 2 |
| Peak Pulse Current | IPP |  |  | 9 | A |  | 2 |
| Lead Solder Temperature - Maximum | TL |  |  | 260 | ℃ | 10 Second Duration | 2 |
| Junction Temperature | Tj |  |  | 150 | ℃ |  | 2 |
| Storage Temperature Range | Tstg | -55 |  | 150 | ℃ |  | 2 |
| Reverse stand off voltage | VRWM |  |  | 12 | V |  | 3 |
| Breakdown voltage | V(BR) | 14.1 |  | 16.5 | V | IT=1mA | 3 |
| Reverse leakage current | IR |  |  | 1 | μA | VRWM=12V | 3 |
| Clamping voltage | VC |  |  | 24 | V | IPP=9 A | 3 |
| Forward voltage | VF |  |  | 0.9 | V | IF=10mA | 3 |
| Junction capacitance | CJ |  | 45 |  | pF | VR=0V,f=1MHz | 3 |

## CAD (KiCad official)

- Symbol: `CESD12VD5`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `cesd12vd5-etched.step` / `cesd12vd5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cesd12vd5.step` / `cesd12vd5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjiang Electronics Tech (CJ) datasheet](docs/cesd12vd5-datasheet.pdf) (6 pp, sha256 `a72d7770e876ecbf`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/cesd12vd5-datasheet.pdf)