component

ESDALD03BCX

Public Made by Adom

by adom

WeEn Semiconductors ESD And Surge Protection (TVS/ESD), SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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ESDALD03BCX

WeEn Semiconductors · ESD And Surge Protection (TVS/ESD) · SOD-323

ESDALD03BCX from WeEn Semiconductors, in a SOD-323. 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 1 passive Terminal 1 of the bidirectional ESD protection diode, which protects one directional I/O line (VR 3.3 V, VBR min 4.5 V at 1 mA for ESDALD03BC).
2 2 passive Terminal 2 of the bidirectional ESD protection diode, which protects one directional I/O line (VR 3.3 V, VBR min 4.5 V at 1 mA for ESDALD03BC).

Key specifications

Parameter Value
Manufacturer WeEn Semiconductors
Package SOD-323
Category Circuit Protection
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reverse stand-off voltage VR 3.3 V 2
Breakdown voltage VBR 4.5 V IT = 1 mA 2
Clamping voltage VC 8.5 V Ipp = 1 A 2
Clamping voltage at max Ipp VC 20 V Max Ipp 2
Peak pulse current Ipp 20 A 2
Reverse leakage current IR 1 μA @ VR 2
Capacitance Cj 0.8 pF 0 V, 1 MHz 2
ESD per IEC 61000-4-2 (air) VESD -30 30 kV Tj = 25 °C 1
ESD per IEC 61000-4-2 (contact) VESD -30 30 kV Tj = 25 °C 1
Storage temperature range Tstg -55 150 °C 1
Operating temperature range Tj -55 150 °C 1

CAD (KiCad official)

  • Symbol: ESDALD03BCX
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: esdald03bcx-etched.step / esdald03bcx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esdald03bcx.step / esdald03bcx.glb are the bare package body.

Provenance

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

  • Datasheet: WeEn Semiconductors datasheet (6 pp, sha256 d9fc6c8fd223195b, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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