component

SMBJ12A-AT

Public Made by Adom

by adom

Brightking ESD And Surge Protection (TVS/ESD), SMB(DO-214AA). 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 smbj12a-at: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
package.json Publish 0.1.0 · Ray 26d ago
page.json Set visibility: public · Ray 26d ago
README.md Publish 0.1.0 · Ray 26d ago
smbj12a-at-etched.glb Publish 0.1.0 · Ray 26d ago
smbj12a-at-etched.step smbj12a-at: factory component page (tier=lcsc) · Ray 26d ago
smbj12a-at-hero.glb smbj12a-at: hero GLB from the etched model (keeps the MPN mark) · Ray 26d ago
smbj12a-at-hero.overlay.json Publish 0.1.0 · Ray 26d ago
smbj12a-at.glb Publish 0.1.0 · Ray 26d ago
smbj12a-at.kicad_mod Publish 0.1.0 · Ray 26d ago
smbj12a-at.kicad_sym smbj12a-at: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj12a-at.lbr smbj12a-at: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj12a-at.step Publish 0.1.0 · Ray 26d ago

SMBJ12A-AT

Brightking · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)

SMBJ12A-AT from Brightking, in a SMB(DO-214AA). 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 K passive Cathode terminal, marked by the color band on the unidirectional SMBJ12A-AT; it connects to the positive side of the protected line, with VRWM 12.0V and VBR 13.30~14.70V at 1mA.
2 A passive Anode terminal, opposite the cathode band, normally connected to ground; the device clamps at VC 19.9V at IPP 30.2A (10/1000μs, 600W peak pulse power).

Key specifications

Parameter Value
Manufacturer Brightking
Package SMB(DO-214AA)
Category Circuit Protection
Pins 2

CAD (KiCad official)

  • Symbol: SMBJ12A-AT
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: smbj12a-at-etched.step / smbj12a-at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj12a-at.step / smbj12a-at.glb are the bare package body.

Provenance

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

  • Datasheet: Brightking datasheet (7 pp, sha256 a2bc93a3b45c5e72, retrieved 2026-10-12, 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