component
LC03-3.3
Public Made by Adomby adom
TECH PUBLIC ESD And Surge Protection (TVS/ESD), SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LC03-3.3
TECH PUBLIC · ESD And Surge Protection (TVS/ESD) · SO-8
LC03-3.3 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 data line input, connected internally with pin 8 (Line 1 out) to the steering-diode bridge for differential and common-mode protection. |
| 2 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 3 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 4 | LINE2_IN | passive | Line 2 data line input, connected internally with pin 5 (Line 2 out) to the steering-diode bridge for differential and common-mode protection. |
| 5 | LINE2_OUT | passive | Line 2 data line output, connected internally with pin 4 (Line 2 in) to the protection bridge. |
| 6 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 7 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 8 | LINE1_OUT | passive | Line 1 data line output, connected internally with pin 1 (Line 1 in) to the protection bridge. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SO-8 |
| Category | Circuit Protection |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LC03-3.3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
lc03-3-3-etched.step/lc03-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lc03-3-3.step/lc03-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (5 pp, sha256
145dbff55a27bb50, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-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).
# LC03-3.3
**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SO-8
LC03-3.3 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 data line input, connected internally with pin 8 (Line 1 out) to the steering-diode bridge for differential and common-mode protection. |
| 2 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 3 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 4 | LINE2_IN | passive | Line 2 data line input, connected internally with pin 5 (Line 2 out) to the steering-diode bridge for differential and common-mode protection. |
| 5 | LINE2_OUT | passive | Line 2 data line output, connected internally with pin 4 (Line 2 in) to the protection bridge. |
| 6 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 7 | GND | power_in | Ground, connected directly to a ground plane for common-mode protection (left not connected for differential-only protection in high common-voltage applications). |
| 8 | LINE1_OUT | passive | Line 1 data line output, connected internally with pin 1 (Line 1 in) to the protection bridge. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SO-8 |
| Category | Circuit Protection |
| Pins | 8 |
## CAD (KiCad official)
- Symbol: `LC03-3.3`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `lc03-3-3-etched.step` / `lc03-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lc03-3-3.step` / `lc03-3-3.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/8590234761236287488) (5 pp, sha256 `145dbff55a27bb50`, retrieved 2026-10-09, 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/lc03-3-3-datasheet.pdf)