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1.0SMB33CA-AT

Public Made by Adom

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Brightking ESD And Surge Protection (TVS/ESD), 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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1.0SMB33CA-AT

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

1.0SMB33CA-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: 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 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
Peak pulse power dissipation PPPM 1000 W 10/1000μs waveform (Note1, Note2, Fig.1); printed as Minimum 1000 2
Breakdown voltage (bidirectional 33 V) VBR 31.4 34.7 V @IT = 1 mA (test current column) 3
Operating junction and storage temperature range TJ,TSTG -55 150 ℃ 2
Steady state power dissipation PM(AV) 5 W TA = 50℃ (Fig.5) 2
Peak forward surge current IFSM 100 A 8.3ms single half sine-wave, JEDEC Method (Note 3, Fig.6) 2
Reverse leakage current IR 1 μA @VRWM = 28.20 V 3
Reverse stand-off voltage (bidirectional 33 V) VRWM 28.2 V 3
Maximum clamping voltage VC 45.7 V @IPP = 22.2 A 3
Peak pulse current IPPM 22.2 A 10/1000μs waveform (Note 1, Fig.3); value from table row for 1.0SMB33CA-AT 2
Typical thermal resistance junction to lead RθJL 20 ℃/W Typical 2
Typical thermal resistance junction to ambient RθJA 100 ℃/W Typical 2

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 tin ■ Terminal: Tin plated, solderable per MIL-STD-750, Method 2026 ■ Polarity: Color band denotes cathode except bi-directional models 1

CAD (KiCad official)

  • Symbol: 1.0SMB33CA-AT
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: 1-0smb33ca-at-etched.step / 1-0smb33ca-at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-0smb33ca-at.step / 1-0smb33ca-at.glb are the bare package body.

Provenance

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

  • Datasheet: Brightking datasheet (7 pp, sha256 5652d2288fdce114, retrieved 2026-10-16, 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