component

SMBJ30A-AT

Public Made by Adom

by adom

Brightking Elec (TAIWAN) TVS, SMB(DO-214AA). 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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docs Publish 0.1.0 · Ray 10d ago
viewers smbj30a-at: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
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smbj30a-at-etched.step smbj30a-at: factory component page (tier=lcsc) · Ray 10d ago
smbj30a-at-hero.glb smbj30a-at: hero GLB from the etched model (keeps the MPN mark) · Ray 10d ago
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smbj30a-at.glb Publish 0.1.0 · Ray 10d ago
smbj30a-at.kicad_mod Publish 0.1.0 · Ray 10d ago
smbj30a-at.kicad_sym smbj30a-at: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj30a-at.lbr smbj30a-at: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj30a-at.step Publish 0.1.0 · Ray 10d ago

SMBJ30A-AT

Brightking Elec (TAIWAN) · TVS · SMB(DO-214AA)

SMBJ30A-AT from Brightking Elec (TAIWAN), 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: 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 SMB(DO-214AA)
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
Breakdown voltage VBR 33.3 36.8 V @IT 1 mA (SMBJ30A-AT, unidirectional) 3
Maximum clamping voltage VC 48.4 V @IPP 12.4 A 3
Reverse leakage IR 1 µA @VRWM 30.0 V 3
Peak pulse power dissipation PPPM 600 W 10/1000µs waveform (Note1, Note2, Fig.1) 1
Steady state power dissipation PM(AV) 5 W TA=50℃ (Fig.5) 1
Peak forward surge current IFSM 100 A 8.3ms single half sine-wave, JEDEC method (Note3, Fig.6) 1
Operating junction and storage temperature range TJ,TSTG -55 150 ℃ 1
Thermal resistance junction to lead RθJL 20 ℃/W Typical 1
Thermal resistance junction to ambient RθJA 100 ℃/W Typical 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: SMBJ30A-AT
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: smbj30a-at-etched.step / smbj30a-at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj30a-at.step / smbj30a-at.glb are the bare package body.

Provenance

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

  • Datasheet: Brightking Elec (TAIWAN) datasheet (7 pp, sha256 a2bc93a3b45c5e72, retrieved 2026-10-28, 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