component

SMAJ12A

Public Made by Adom

by adom

MDD Microdiode Semiconductor ESD And Surge Protection (TVS/ESD), DO-214AC(SMA). 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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docs Publish 0.1.0 · Ray 26d ago
viewers smaj12a: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
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page.json Set visibility: public · Ray 26d ago
README.md Publish 0.1.0 · Ray 26d ago
smaj12a-etched.glb Publish 0.1.0 · Ray 26d ago
smaj12a-etched.step smaj12a: factory component page (tier=lcsc) · Ray 26d ago
smaj12a-hero.glb smaj12a: hero GLB from the etched model (keeps the MPN mark) · Ray 26d ago
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smaj12a.glb Publish 0.1.0 · Ray 26d ago
smaj12a.kicad_mod Publish 0.1.0 · Ray 26d ago
smaj12a.kicad_sym smaj12a: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
smaj12a.lbr smaj12a: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
smaj12a.step Publish 0.1.0 · Ray 26d ago

SMAJ12A

MDD Microdiode Semiconductor · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)

SMAJ12A from MDD Microdiode Semiconductor, in a DO-214AC(SMA). 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 CATHODE passive Cathode is the terminal marked by the cathode band on the DO-214AC/SMA body, and the band applies to unidirectional products such as SMAJ12A, which has a reverse stand-off voltage (VRWM) of 12.0 V and a clamping voltage (VC) of 19.9 V at 1 A peak pulse current.
2 A passive Anode is the terminal opposite the cathode band, and the datasheet rates the unidirectional device at a peak pulse power of 400 W for a 10/1000 µs waveform and a peak forward surge current of 40 A for an 8.3 ms half sine wave.

Key specifications

Parameter Value
Manufacturer MDD Microdiode Semiconductor
Package DO-214AC(SMA)
Category Circuit Protection
Pins 2

CAD (KiCad official)

  • Symbol: SMAJ12A
  • Footprint: Diode_SMD:D_SMA
  • 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
  • 3D model files: smaj12a-etched.step / smaj12a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj12a.step / smaj12a.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 06be130fd62f61d1, retrieved 2026-10-12, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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