# LC03-6

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

LC03-6 from TECH PUBLIC, 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_IN | passive | Line 1 input, connected internally with pin 8 to the steering-diode bridge; protects one line of the differential pair (8/20µs peak pulse current 100A). |
| 2 | GND | power_in | Ground, connected directly to the board ground plane for line-to-ground protection; left not connected (NC) for differential-only protection. |
| 3 | GND | power_in | Ground, connected directly to the board ground plane for line-to-ground protection; left not connected (NC) for differential-only protection. |
| 4 | LINE2_IN | passive | Line 2 input, connected internally with pin 5 to the steering-diode bridge; protects the second line of the differential pair. |
| 5 | LINE2_OUT | passive | Line 2 output, connected internally with pin 4 to the steering-diode bridge. |
| 6 | GND | power_in | Ground, connected directly to the board ground plane for line-to-ground protection; left not connected (NC) for differential-only protection. |
| 7 | GND | power_in | Ground, connected directly to the board ground plane for line-to-ground protection; left not connected (NC) for differential-only protection. |
| 8 | LINE1_OUT | passive | Line 1 output, connected internally with pin 1 to the steering-diode bridge. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LC03-6`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `lc03-6-etched.step` / `lc03-6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lc03-6.step` / `lc03-6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757222766678822912) (5 pp, sha256 `2195b2ba900d481d`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/lc03-6-datasheet.pdf)