component

SM18C

Public Made by Adom

by adom

MDD Microdiode Semiconductor ESD And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 20d ago
viewers sm18c: viewers · Ray 20d ago
package.json Publish 0.1.0 · Ray 20d ago
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README.md Publish 0.1.0 · Ray 20d ago
sm18c-etched.glb sm18c: factory component page (tier=lcsc) · Ray 20d ago
sm18c-etched.step sm18c: factory component page (tier=lcsc) · Ray 20d ago
sm18c-hero.glb sm18c: hero GLB from the etched model (keeps the MPN mark) · Ray 20d ago
sm18c-hero.overlay.json Publish 0.1.0 · Ray 20d ago
sm18c.glb Publish 0.1.0 · Ray 20d ago
sm18c.kicad_mod Publish 0.1.0 · Ray 20d ago
sm18c.kicad_sym Publish 0.1.0 · Ray 20d ago
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sm18c.step Publish 0.1.0 · Ray 20d ago

SM18C

MDD Microdiode Semiconductor · ESD And Surge Protection (TVS/ESD) · SOT-23

SM18C from MDD Microdiode Semiconductor, in a SOT-23. 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 I/O1 passive Protected line 1, a bidirectional TVS channel to pin 3, with VRWM 18 V and breakdown voltage 20.0 V min at 1 mA for SM18C.
2 I/O2 passive Protected line 2, a bidirectional TVS channel to pin 3, with VRWM 18 V and breakdown voltage 20.0 V min at 1 mA for SM18C.
3 COMMON passive Common node of both bidirectional TVS diodes, the shared return for pins 1 and 2 (±30 kV IEC 61000-4-2 air and contact).

Key specifications

Parameter Value
Manufacturer MDD Microdiode Semiconductor
Package SOT-23
Category Circuit Protection
Pins 3

CAD (KiCad official)

  • Symbol: SM18C
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: sm18c-etched.step / sm18c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sm18c.step / sm18c.glb are the bare package body.

Provenance

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

  • Datasheet: MDD Microdiode Semiconductor datasheet (5 pp, sha256 deddb74e0c252eba, 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