# CDSOD323-T12C

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

CDSOD323-T12C from BOURNS, 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 | Bidirectional TVS terminal 1 (CDSOD323-T12C, 12 V VWM, 13.3 V min breakdown at 1 mA, 19.0 V max clamping at 1 A); electrical specifications apply in both directions, no cathode band on bidirectional parts. |
| 2 | 2 | passive | Bidirectional TVS terminal 2 (CDSOD323-T12C, 12 V VWM, 1 µA max leakage at VWM); interchangeable with pin 1 since the device protects one line or I/O port in both polarities. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| 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 |
|---|---|---|---|---|---|---|---|
| Minimum Breakdown Voltage | VBR | 13.3 |  |  | V | @ 1 mA | 1 |
| Working Peak Voltage | VWM |  | 12 |  | V |  | 1 |
| Maximum Clamping Voltage | VC |  |  | 19 | V | @ IP = 1 A | 1 |
| Peak Pulse Power | PPP |  |  | 350 | W | tp = 8/20 μs, TA = 25 °C | 1 |
| Operating Temperature | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 1 |
| Typical Clamping Voltage | VC |  | 28.3 |  | V | @ 8/20 μs, IPP = 11 A | 1 |
| Typical Capacitance | CJ |  | 3 |  | pF | @ 0 V, 1 MHz | 1 |

## CAD (KiCad official)

- Symbol: `CDSOD323-T12C`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `cdsod323-t12c-etched.step` / `cdsod323-t12c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdsod323-t12c.step` / `cdsod323-t12c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918782592606208) (5 pp, sha256 `dae8b872e8303107`, 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/cdsod323-t12c-datasheet.pdf)