component

SMAJ12A-MS

Public Made by Adom

by adom

MSKSEMI Electrostatic And Surge Protection (TVS/ESD), SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcircuit protectionsmaj12a-msfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 16d ago
viewers smaj12a-ms: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
package.json Publish 0.1.0 · Ray 16d ago
page.json Set visibility: public · Ray 16d ago
README.md Publish 0.1.0 · Ray 16d ago
smaj12a-ms-etched.glb Publish 0.1.0 · Ray 16d ago
smaj12a-ms-etched.step smaj12a-ms: factory component page (tier=lcsc) · Ray 16d ago
smaj12a-ms-hero.glb smaj12a-ms: hero GLB from the etched model (keeps the MPN mark) · Ray 16d ago
smaj12a-ms-hero.overlay.json Publish 0.1.0 · Ray 16d ago
smaj12a-ms.glb Publish 0.1.0 · Ray 16d ago
smaj12a-ms.kicad_mod Publish 0.1.0 · Ray 16d ago
smaj12a-ms.kicad_sym smaj12a-ms: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
smaj12a-ms.lbr smaj12a-ms: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
smaj12a-ms.step Publish 0.1.0 · Ray 16d ago

SMAJ12A-MS

MSKSEMI · Electrostatic And Surge Protection (TVS/ESD) · SMA(DO-214AC)

SMAJ12A-MS from MSKSEMI, in a SMA(DO-214AC). 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, marked by the color band on the unidirectional SMAJ12A-MS (VR 12.0 V, VBR 13.30-14.70 V at 1 mA, VC 19.9 V at IPP 20.11 A).
2 A passive Anode of the unidirectional SMAJ12A-MS TVS diode; connects to the protected return or ground side.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reverse Stand-off Voltage VR 12 V T=25℃ 3
Reverse Leakage Current IR 1 μA @ VR, T=25℃ 3
Breakdown Voltage VBR 13.3 14.7 V @ IT = 1 mA, T=25℃ 3
Test Current IT 1 mA T=25℃ 3
Clamping Voltage VC 19.9 V @ IPP, 10/1000μs surge 3
Maximum Peak Pulse Current IPP 20.11 A 10/1000μs surge waveform 3
Peak pulse power dissipation PPP 400 W 10/1000μs waveform, T=25ºC 5
Steady state power dissipation PM(AV) 1 W TL=75 C 5
Operating junction temperature range Tj -55 125 ℃ 5
Storage temperature range Tstg -55 150 ℃ 5

CAD (KiCad official)

  • Symbol: SMAJ12A-MS
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj12a-ms-etched.step / smaj12a-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj12a-ms.step / smaj12a-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (8 pp, sha256 b5f3a0cfe4b0e1eb, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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