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ESDAULC45-1BF4

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by Ray

STMicroelectronics ESD And Surge Protection (TVS/ESD), 0201. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentcircuit protectionesdaulc45-1bf4
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Symbol & Footprint

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Datasheet

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Contents

README

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ESDAULC45-1BF4

STMicroelectronics · ESD And Surge Protection (TVS/ESD) · 0201

ESDAULC45-1BF4 from STMicroelectronics, in a 0201. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 I/O_1 passive Bidirectional ESD protection terminal 1. Identified on the package by the pin-1 bar marking (see Figure 20). Connect to the protected data line or to ground; either terminal may be tied to line or ground since the TVS is bidirectional (VBR = 5.8 V min, VRM = 3 V, CLINE = 1.5 pF typ.).
2 I/O_2 passive Bidirectional ESD protection terminal 2. Opposite end of the TVS from pin 1. Connect to the protected data line or to ground; either terminal may be tied to line or ground since the TVS is bidirectional (VBR = 5.8 V min, VRM = 3 V, CLINE = 1.5 pF typ.).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package 0201
Category Circuit Protection
Pins 2

Ordering variants

Same part, different packaging or reel option.

  • ESDAULC5-1BF4

CAD (KiCad official)

  • Symbol: ESDAULC45-1BF4
  • Footprint: Resistor_SMD:R_0201_0603Metric
  • 3D model: 0201 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (None pp, sha256 b9811d5275f131b1, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF