# CDNBS08-SLVU2.8-8

**BOURNS** · TVS · SO-8

CDNBS08-SLVU2.8-8 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 | Line 1 | bidirectional | Bidirectional TVS-protected I/O line 1 (common-mode, Line Pair 1), rated for a 2.8 V working voltage with 3.0 V breakdown at 1 mA. |
| 2 | GND | power_in | Ground reference pin for Line Pair 1 of the bidirectional TVS array. |
| 3 | GND | power_in | Ground reference pin for Line Pair 2 of the bidirectional TVS array. |
| 4 | Line 4 | bidirectional | Bidirectional TVS-protected I/O line 4 (common-mode, Line Pair 2), rated for a 2.8 V working voltage with 3.0 V breakdown at 1 mA. |
| 5 | Line 3 | bidirectional | Bidirectional TVS-protected I/O line 3 (common-mode, Line Pair 4), rated for a 2.8 V working voltage with 3.0 V breakdown at 1 mA. |
| 6 | GND | power_in | Ground reference pin for Line Pair 4 of the bidirectional TVS array. |
| 7 | GND | power_in | Ground reference pin for Line Pair 3 of the bidirectional TVS array. |
| 8 | Line 2 | bidirectional | Bidirectional TVS-protected I/O line 2 (common-mode, Line Pair 3), rated for a 2.8 V working voltage with 3.0 V breakdown at 1 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | SO-8 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 8 |

## 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 Current | IPP |  |  | 30 | A | tp = 8/20 μs | 1 |
| Peak Pulse Power | PPP |  |  | 600 | W | tp = 8/20 μs | 1 |
| Working Voltage | VWM |  |  | 2.8 | V |  | 1 |
| Breakdown Voltage | VBR | 3 |  |  | V | @ 1 mA | 1 |
| Leakage Current | ID |  |  | 1 | μA | @ VWM | 1 |
| Capacitance | C |  | 6 |  | pF | @ 0 V, 1 MHz | 1 |
| Snapback Voltage |  |  | 2.8 |  | V | @ 50 mA | 1 |
| ESD Protection per IEC 61000-4-2, Contact Discharge | ESD | -8 |  | 8 | kV | IEC 61000-4-2 contact discharge | 1 |
| ESD Protection per IEC 61000-4-2, Air Discharge | ESD | -15 |  | 15 | kV | IEC 61000-4-2 air discharge | 1 |
| EFT Protection per IEC 61000-4-4 | EFT |  |  | 60 | A | IEC 61000-4-4 @ 5/50 ns | 1 |
| Clamping Voltage | VC |  |  | 8.5 | V | @ IP = 5 A, 8/20 μs, each differential line pair | 1 |
| Clamping Voltage | VC |  |  | 15 | V | @ IP = 24 A, 8/20 μs, each differential line pair | 1 |
| Clamping Voltage | VC |  |  | 17 | V | @ IPP = 30 A, 8/20 μs, each differential line pair | 1 |
| Junction Temperature Range | TJ | -55 | 25 | 125 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 | 25 | 150 | °C |  | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | package with 100 % Sn plating on the lead frame. It weighs approximately 15 mg and has a flammability rating of UL 94V-0. | 2 |

## CAD (KiCad official)

- Symbol: `CDNBS08-SLVU2.8-8`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [BOURNS datasheet](docs/cdnbs08-slvu2-8-8-datasheet.pdf) (5 pp, sha256 `9f0a1b92f5a1c22e`, retrieved 2026-10-30, 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/cdnbs08-slvu2-8-8-datasheet.pdf)