component

1.0SMB33A

Public Made by Adom

by adom

Brightking Elec (TAIWAN) TVS, SMB(DO-214AA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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1.0SMB33A

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

1.0SMB33A 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, marked by the color band on the unidirectional 1.0SMB33A (VRWM 28.2V, VBR 31.40~34.70V at 1mA, VC 45.7V at IPP 22.2A).
2 A passive Anode, the terminal opposite the cathode band; 1000W peak pulse power at 10/1000μs.

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 31.4 34.7 V @IT=1mA, TA=25℃ 3
Reverse Stand-Off Voltage VRWM 28.2 V TA=25℃ 3
Maximum Clamping Voltage VC 45.7 V @IPP=22.2A, TA=25℃ 3
Peak Pulse Current IPP 22.2 A 10/1000μs waveform, TA=25℃ 3
Reverse Leakage Current IR 1 μA @VRWM, TA=25℃ 3
Test Current IT 1 mA TA=25℃ 3
Peak Pulse Power Dissipation PPPM 1000 Watts 10/1000μs waveform 2
Steady State Power Dissipation PM(AV) 5 Watts TA=50℃ 2
Peak Forward Surge Current IFSM 100 Amps 8.3ms single half sine-wave superimposed on rated load, JEDEC Method 2
Operating Junction and Storage Temperature Range TJ,TSTG -55 150 ℃ 2
Thermal Resistance Junction to Lead RθJL 20 ℃/W Typical 2
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 copper 2. Mounted on 5.0mm×5.0mm (0.03mm thick) copper pads to each terminal. 2

CAD (KiCad official)

  • Symbol: 1.0SMB33A
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: 1-0smb33a-etched.step / 1-0smb33a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-0smb33a.step / 1-0smb33a.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 e8b3cc4bb576a3a3, 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