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SMAJ180CA

Brightking Elec (TAIWAN) · TVS · SMA(DO-214AC)

SMAJ180CA from Brightking Elec (TAIWAN), 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Brightking Elec (TAIWAN)
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
Peak pulse power dissipation PPPM 400 Watts 10/1000μs waveform (Note1, Note2, Fig.1) 1
Breakdown voltage (bidirectional SMAJ180CA) VBR 201 222 V @IT = 1 mA 3
Maximum clamping voltage (bidirectional SMAJ180CA) VC 292 V @IPP = 1.4 A 3
Steady state power dissipation at TA=50℃ PM(AV) 3.3 Watts TA=50℃ (Fig.5) 1
Peak forward surge current, 8.3ms single half sine-wave IFSM 40 Amps 8.3ms single half sine-wave superimposed on rated load, (JEDEC Method) (Note3, Fig.6) 1
Operating junction and storage temperature range TJ,TSTG -65 150 ℃ 1
Thermal resistance junction to lead RθJL 30 ℃/W Typical 1
Thermal resistance junction to ambient RθJA 120 ℃/W Typical; mounted on 5.0mm×5.0mm (0.03mm thick) copper pads to each terminal (Note 2) 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper 2. Mounted on 5.0mm×5.0mm (0.03mm thick) copper pads to each terminal. 1

CAD (KiCad official)

  • Symbol: SMAJ180CA
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj180ca-etched.step / smaj180ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj180ca.step / smaj180ca.glb are the bare package body.

Provenance

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

  • Datasheet: Brightking Elec (TAIWAN) datasheet (6 pp, sha256 ec1d641bba0152d8, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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