component
CH412Z
Public Made by Adomby adom
TECH PUBLIC ESD And Surge Protection (TVS/ESD), SOT-353. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCH412Z
TECH PUBLIC · ESD And Surge Protection (TVS/ESD) · SOT-353
CH412Z from TECH PUBLIC, in a SOT-353. 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 | ESD-protected I/O line 1 with steering diodes to pin 2 (GND); reverse working voltage 5V max, breakdown 6V min to 9V max at 1mA. |
| 2 | GND | power_in | Common ground connection of the 4-line TVS array, shared by all I/O steering diodes. |
| 3 | I/O2 | passive | ESD-protected I/O line 2 with steering diodes to pin 2 (GND); withstands ±30kV air and contact discharge per IEC61000-4-2. |
| 4 | I/O3 | passive | ESD-protected I/O line 3 with steering diodes to pin 2 (GND); clamping voltage 11V max at IPP=4.5A (8/20µs). |
| 5 | I/O4 | passive | ESD-protected I/O line 4 with steering diodes to pin 2 (GND); leakage 100nA max at VRWM=5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-353 |
| Category | Circuit Protection |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
CH412Z - Footprint:
Package_TO_SOT_SMD:SOT-353_SC-70-5 - 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files:
ch412z-etched.step/ch412z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ch412z.step/ch412z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (4 pp, sha256
d7ed3bead69fef02, retrieved 2026-10-18, 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).