# CDNBS08-SLVU2.8-4

**BOURNS** · ESD And Surge Protection (TVS/ESD) · SO-8

CDNBS08-SLVU2.8-4 from BOURNS, in a SO-8. 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 | LINE1 | passive | Protected I/O Line 1 in unidirectional common-mode configuration (Line Pair 1 in differential mode); 2.8 V working voltage, 6 pF capacitance. |
| 2 | GND | power_in | Ground reference for the TVS array in unidirectional common-mode configuration (Line Pair 1 in differential mode). |
| 3 | LINE3 | passive | Protected I/O Line 3 in unidirectional common-mode configuration (Line Pair 2 in differential mode); 2.8 V working voltage. |
| 4 | GND | power_in | Ground reference for the TVS array in unidirectional common-mode configuration (Line Pair 2 in differential mode). |
| 5 | LINE4 | passive | Protected I/O Line 4 in unidirectional common-mode configuration (Line Pair 2 in differential mode); 2.8 V working voltage. |
| 6 | GND | power_in | Ground reference for the TVS array in unidirectional common-mode configuration (Line Pair 2 in differential mode). |
| 7 | LINE2 | passive | Protected I/O Line 2 in unidirectional common-mode configuration (Line Pair 1 in differential mode); 2.8 V working voltage. |
| 8 | GND | power_in | Ground reference for the TVS array in unidirectional common-mode configuration (Line Pair 1 in differential mode). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | SO-8 |
| Category | Circuit Protection |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `CDNBS08-SLVU2.8-4`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `cdnbs08-slvu2-8-4-etched.step` / `cdnbs08-slvu2-8-4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdnbs08-slvu2-8-4.step` / `cdnbs08-slvu2-8-4.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/8588949560329060352) (6 pp, sha256 `9abdd9fbb6d7b433`, retrieved 2026-10-09, 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/cdnbs08-slvu2-8-4-datasheet.pdf)