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ESDL031-1BF4

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by adom

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

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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
Name Last commit message Last updated
docs esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
viewers esdl031-1bf4: symbol repaired (bidirectional TVS (the page says so)) · Ray 5d ago
esdl031-1bf4-etched.fit.json esdl031-1bf4: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
esdl031-1bf4-etched.glb esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
esdl031-1bf4-etched.step esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
esdl031-1bf4-hero.glb esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
esdl031-1bf4-hero.overlay.json esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
esdl031-1bf4.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 25d ago
esdl031-1bf4.kicad_mod Publish 0.2.0 · Ray 1mo ago
esdl031-1bf4.kicad_sym esdl031-1bf4: symbol repaired (bidirectional TVS (the page says so)) · Ray 5d ago
esdl031-1bf4.lbr esdl031-1bf4: symbol repaired (bidirectional TVS (the page says so)) · Ray 5d ago
esdl031-1bf4.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 25d ago
package.json esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
page.json esdl031-1bf4: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 25d ago
README.md Publish 0.2.0 · Ray 1mo ago

ESDL031-1BF4

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

ESDL031-1BF4 from STMicroelectronics, 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 Bidirectional TVS terminal 1 (marked pin 1 side), line protected against ESD with VRM 3.3 V, VBR 5.0 to 6.6 V at 1 mA; terminals are interchangeable in polarity.
2 2 passive Bidirectional TVS terminal 2, the opposite terminal to pin 1; the device clamps to 6.3 V TLP at 16 A and has 10 to 12 pF line capacitance.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package 0201
Category Circuit Protection
Pins 2

CAD (KiCad official)

  • Symbol: ESDL031-1BF4
  • 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)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (11 pp, sha256 1f535f7fa3359c70, retrieved 2026-10-08, tier: manufacturer)
  • 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