# CDSOT23-T24

**BOURNS** · ESD Protection Devices · SOT-23-3

CDSOT23-T24 from BOURNS, in a SOT-23-3. 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 | Protected line input tied internally to pin 2 in the unidirectional T24 schematic, with a 24 V maximum working peak voltage (VWM) and 26.7 V minimum breakdown at 1 mA. |
| 2 | 2 | passive | Second protected line input tied internally to pin 1 in the unidirectional T24 schematic, with a 24 V maximum working peak voltage (VWM) and 26.7 V minimum breakdown at 1 mA. |
| 3 | 3 | passive | Common terminal of the TVS diode, shown on the datasheet schematic as the opposite side of the diode from pins 1 and 2; the datasheet does not label it as ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | SOT-23-3 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 3 |

## 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 | 26.7 |  |  | V | @ 1 mA | 1 |
| Maximum Working Peak Voltage | VWM |  |  | 24 | V |  | 1 |
| Maximum Clamping Voltage | VC |  |  | 43 | V | @ IP = 1 A (1) | 1 |
| Maximum Clamping Voltage (8/20 µs) | VC |  |  | 49 | V | @ 8/20 µs, IPP = 12 A (1) | 1 |
| Maximum Leakage Current | ID |  |  | 1 | µA | @ VWM | 1 |
| ESD Protection Contact - Min. (IEC 61000-4-2) | ESD | -8 |  | 8 | kV | Contact discharge, IEC 61000-4-2 | 1 |
| ESD Protection Contact - Max. (IEC 61000-4-2) | ESD | -30 |  | 30 | kV | Contact discharge, IEC 61000-4-2 | 1 |
| ESD Protection Air - Min. (IEC 61000-4-2) | ESD | -15 |  | 15 | kV | Air discharge, IEC 61000-4-2 | 1 |
| ESD Protection Air - Max. (IEC 61000-4-2) | ESD | -30 |  | 30 | kV | Air discharge, IEC 61000-4-2 | 1 |
| Peak Pulse Power | PPP |  |  | 500 | W | tp @ 8/20 µs (2) | 1 |
| Forward Voltage | VF |  |  | 1.5 | V | @ 100 mA, 300 µs - Square Wave (3) | 1 |
| Operating Temperature | TJ | -55 |  | 150 | ºC |  | 1 |
| Storage Temperature | TSTG | -55 |  | 150 | ºC |  | 1 |

## CAD (KiCad official)

- Symbol: `CDSOT23-T24`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `cdsot23-t24-etched.step` / `cdsot23-t24-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdsot23-t24.step` / `cdsot23-t24.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](docs/cdsot23-t24-datasheet.pdf) (5 pp, sha256 `789e9bb8e9af3179`, retrieved 2026-11-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cdsot23-t24-datasheet.pdf)