component

SMAJ54A-AT

Public Made by Adom

by adom

Brightking ESD And Surge Protection (TVS/ESD), SMA(DO-214AC). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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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SMAJ54A-AT

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

SMAJ54A-AT from Brightking, 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
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 W 10/1000µs waveform (Note1, Note2, Fig.1) 1
Steady state power dissipation PM(AV) 3.3 W TA=50℃ (Fig.5) 1
Peak forward surge current IFSM 40 A 8.3ms single half sine-wave, JEDEC Method (Note3, Fig.6) 1
Operating junction and storage temperature range TJ,TSTG -55 150 ℃ 1
Typical thermal resistance junction to lead RθJL 30 ℃/W Typical 1
Typical thermal resistance junction to ambient RθJA 120 ℃/W Typical 1
Breakdown voltage (unidirectional SMAJ54A-AT) VBR 60 66.3 V @IT = 1 mA 3
Maximum clamping voltage (unidirectional SMAJ54A-AT) VC 87.1 V @IPP = 4.6 A 3
Reverse leakage (unidirectional SMAJ54A-AT) IR 1 µA @VRWM = 54.0 V 3

CAD (KiCad official)

  • Symbol: SMAJ54A-AT
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj54a-at-etched.step / smaj54a-at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj54a-at.step / smaj54a-at.glb are the bare package body.

Provenance

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

  • Datasheet: Brightking datasheet (6 pp, sha256 b89bf590a7f5b511, retrieved 2026-10-15, 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