component

UET14A05L03

Public Made by Adom

by adom

TECH PUBLIC ESD And Surge Protection (TVS/ESD), SOT-143. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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UET14A05L03

TECH PUBLIC · ESD And Surge Protection (TVS/ESD) · SOT-143

UET14A05L03 from TECH PUBLIC, in a SOT-143. 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 GND power_in Common ground side of the TVS array, the return for the lower steering diodes and the zener, with the IO-to-GND junction capacitance specified as 0.6 pF typ / 0.9 pF max.
2 IO1 passive Protected I/O line 1 connected between the steering diode pair, protected to ±25kV air / ±20kV contact ESD (IEC 61000-4-2) and 4A 8/20µs surge, with 0.3 pF typ IO-to-IO capacitance.
3 IO2 passive Protected I/O line 2 connected between the steering diode pair, protected to ±25kV air / ±20kV contact ESD (IEC 61000-4-2) and 4A 8/20µs surge, with 0.3 pF typ IO-to-IO capacitance.
4 VCC power_in Upper rail of the diode array where the steering diodes and the TVS zener connect, for the 5V operating voltage (VRWM 5V max, VBR 6V min at 1mA).

Key specifications

Parameter Value
Manufacturer TECH PUBLIC
Package SOT-143
Category Circuit Protection
Pins 4

CAD (KiCad official)

  • Symbol: UET14A05L03
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143 (KiCad packages3D, STEP)
  • 3D model files: uet14a05l03-etched.step / uet14a05l03-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uet14a05l03.step / uet14a05l03.glb are the bare package body.

Provenance

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

  • Datasheet: TECH PUBLIC datasheet (4 pp, sha256 c3a50c0418228e8d, retrieved 2026-11-04, 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