# CDSOT23-SLVU2.8

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

CDSOT23-SLVU2.8 from BOURNS, in a SOT-23. 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 | Common reference node for all stated TVS measurements, with leakage, clamping and capacitance specified Pin 3 to Pin 1 or Pin 2 to Pin 1; the datasheet does not label it as ground. |
| 2 | 2 | passive | Maximum clamping voltage is 7.0 V at IP = 5 A and 8.5 V at IP = 5 A measured Pin 2 to Pin 1, with 30 A clamping of 21.0 V and a 2.5 pF typical junction capacitance when Pin 3 is NC. |
| 3 | 3 | passive | Leakage is 1.0 µA maximum at VWM = 2.8 V measured Pin 3 to Pin 1, and typical junction capacitance is 20 pF measured Pin 3 to Pin 1 and Pin 2; Pin 3 may be left NC in the Pin 2 to Pin 1 configuration. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | SOT-23 |
| Category | Circuit 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power | PPK |  |  | 600 | W | tp = 8/20 μs | 1 |
| Peak Pulse Current | IPPM |  |  | 30 | A | tp = 8/20 μs | 1 |
| Storage Temperature | TSTG | -55 |  | 150 | ºC |  | 1 |
| Operating Temperature | TOPR | -55 |  | 150 | ºC |  | 1 |
| Minimum Breakdown Voltage | VBR | 3 |  |  | V | @ 1 mA | 1 |
| Minimum Snap Back Voltage | VBR | 2.8 |  |  | V | @ 50 mA | 1 |
| Maximum Working Peak Voltage | VWM |  |  | 2.8 | V |  | 1 |
| Maximum Leakage Current | ID |  |  | 1 | μA | @ VWM (Pin 3 to Pin 1) or (Pin 2 to Pin 1) | 1 |
| Maximum Clamping Voltage | VC |  |  | 5.5 | V | @ IP = 2 A | 1 |
| Maximum Clamping Voltage (first printed value) | VC |  |  | 7 | V | @ IP = 5 A (Pin 2 to Pin 1) | 1 |
| Maximum Clamping Voltage (second printed value) | VC |  |  | 8.5 | V | @ IP = 5 A (Pin 2 to Pin 1) | 1 |
| Maximum Clamping Voltage | VC |  |  | 21 | V | @ IP = 30 A | 1 |
| Maximum Junction Capacitance | CD |  |  | 3 | pF | @ 0 V, 1 MHz | 1 |
| Maximum Peak Reverse Voltage | VRRM |  |  | 40 | V | @ I = 10 μA | 1 |
| Maximum Reverse Leakage Current | IDR |  |  | 0.1 | μA | @ VWM | 1 |
| Maximum Forward Voltage | VF |  |  | 2 | V | @ IF = 1 A, 120 μs | 1 |
| Typical Junction Capacitance (Pin 3 to Pin 1 & Pin 2) | CD |  | 20 |  | pF | @ 0 V, 1 MHz, (Pin 3 to Pin 1 & Pin 2) | 1 |
| Typical Junction Capacitance (Pin 2 to Pin 1 with Pin 3 NC) | CD |  | 2.5 |  | pF | @ 0 V, 1 MHz, (Pin 2 to Pin 1 with Pin 3 NC) | 1 |

## CAD (KiCad official)

- Symbol: `CDSOT23-SLVU2.8`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `cdsot23-slvu2-8-etched.step` / `cdsot23-slvu2-8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdsot23-slvu2-8.step` / `cdsot23-slvu2-8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](docs/cdsot23-slvu2-8-datasheet.pdf) (5 pp, sha256 `981296d180949a2b`, retrieved 2026-11-12, 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/cdsot23-slvu2-8-datasheet.pdf)