# IP4220CZ6-L

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-23-6

IP4220CZ6-L from TECH PUBLIC, in a SOT-23-6. 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 | I/O1 | passive | TVS-protected data line I/O (Note 1: I/O pins are 1, 3, 4 and 6), 5V max reverse working voltage to ground, 0.8pF max to ground. |
| 2 | GND | power_in | Ground pin, the reference for all I/O pins (center zener diode anode in the schematic). |
| 3 | I/O2 | passive | TVS-protected data line I/O (Note 1: I/O pins are 1, 3, 4 and 6), 5V max reverse working voltage to ground, 0.8pF max to ground. |
| 4 | I/O3 | passive | TVS-protected data line I/O (Note 1: I/O pins are 1, 3, 4 and 6), 5V max reverse working voltage to ground, 0.8pF max to ground. |
| 5 | VCC | power_in | Upper rail of the diode array, tied to the cathode of the center zener diode in the schematic. The datasheet says the part protects one power line but does not name or describe this pin in text. |
| 6 | I/O4 | passive | TVS-protected data line I/O (Note 1: I/O pins are 1, 3, 4 and 6), 5V max reverse working voltage to ground, 0.8pF max to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-6 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `IP4220CZ6-L`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `ip4220cz6-l-etched.step` / `ip4220cz6-l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ip4220cz6-l.step` / `ip4220cz6-l.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/8590931185071833088) (4 pp, sha256 `fac449f6e8dcef0b`, 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/ip4220cz6-l-datasheet.pdf)