# AZC199-04S

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

AZC199-04S 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 input/output, steered by diodes to VCC/GND, with 0.3pF typical I/O-to-I/O capacitance, 0.8pF max to ground, and 5V max reverse working voltage. |
| 2 | GND | power_in | Ground reference for the TVS array, which the I/O pins are clamped against (5V max reverse working voltage, I/O to ground). |
| 3 | I/O2 | passive | TVS-protected data line input/output, steered by diodes to VCC/GND, with 0.3pF typical I/O-to-I/O capacitance, 0.8pF max to ground, and 5V max reverse working voltage. |
| 4 | I/O3 | passive | TVS-protected data line input/output, steered by diodes to VCC/GND, with 0.3pF typical I/O-to-I/O capacitance, 0.8pF max to ground, and 5V max reverse working voltage. |
| 5 | VCC | power_in | Power line connection of the TVS array (internal zener to GND), protecting the power line with 300W peak pulse power (8/20µs, Vcc-GND) and 18V max clamping at 17A. |
| 6 | I/O4 | passive | TVS-protected data line input/output, steered by diodes to VCC/GND, with 0.3pF typical I/O-to-I/O capacitance, 0.8pF max to ground, and 5V max reverse working voltage. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `AZC199-04S`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `azc199-04s-etched.step` / `azc199-04s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `azc199-04s.step` / `azc199-04s.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/8589836000315932672) (4 pp, sha256 `5730ce392e4d481b`, 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/azc199-04s-datasheet.pdf)