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ESD0521C

Public Made by Adom

by adom

Leiditech ESD And Surge Protection (TVS/ESD), 0201. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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esd0521c-etched.glb esd0521c: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
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esd0521c.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
package.json esd0521c: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
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ESD0521C

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

ESD0521C from Leiditech, in a 0201. 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 One terminal of the 1-line bi-directional TVS diode (the chamfered pad in the drawing), which protects one data or power line at 5V VRWM.
2 2 passive Second terminal of the bi-directional TVS diode, interchangeable with the other pad, with 5V reverse working voltage and ±25kV air / ±22kV contact ESD rating.

Key specifications

Parameter Value
Manufacturer Leiditech
Package 0201
Category Circuit Protection
Pins 2

CAD (KiCad official)

  • Symbol: ESD0521C
  • Footprint: Diode_SMD:D_0201_0603Metric
  • 3D model: 0201, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.3 mm nominal 01005 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: esd0521c-etched.step / esd0521c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esd0521c.step / esd0521c.glb are the bare package body.

Provenance

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

  • Datasheet: Leiditech datasheet (4 pp, sha256 dac1b03ec0f87655, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+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