component

SMBJ33A

Public Made by Adom

by adom

MDD Microdiode Semiconductor ESD And Surge Protection (TVS/ESD), DO-214AA(SMB). Pinout cross-checked by two models against the datasheet, 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 26d ago
viewers smbj33a: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
package.json Publish 0.1.0 · Ray 26d ago
page.json Set visibility: public · Ray 26d ago
README.md Publish 0.1.0 · Ray 26d ago
smbj33a-etched.glb Publish 0.1.0 · Ray 26d ago
smbj33a-etched.step smbj33a: factory component page (tier=lcsc) · Ray 26d ago
smbj33a-hero.glb smbj33a: hero GLB from the etched model (keeps the MPN mark) · Ray 26d ago
smbj33a-hero.overlay.json Publish 0.1.0 · Ray 26d ago
smbj33a.glb Publish 0.1.0 · Ray 26d ago
smbj33a.kicad_mod Publish 0.1.0 · Ray 26d ago
smbj33a.kicad_sym smbj33a: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj33a.lbr smbj33a: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj33a.step Publish 0.1.0 · Ray 26d ago

SMBJ33A

MDD Microdiode Semiconductor · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMB)

SMBJ33A from MDD Microdiode Semiconductor, in a DO-214AA(SMB). 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 terminal, marked by the cathode band on the body for unidirectional SMBJ33A; stand-off voltage VRWM 33.0 V, breakdown 36.70~40.60 V at 1 mA, max clamping 53.3 V at 58... see review
2 A passive Anode terminal of the unidirectional TVS diode, the end opposite the cathode band, with 600 W peak pulse power at 10/1000μs.

Key specifications

Parameter Value
Manufacturer MDD Microdiode Semiconductor
Package DO-214AA(SMB)
Category Circuit Protection
Pins 2

CAD (KiCad official)

  • Symbol: SMBJ33A
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
  • 3D model files: smbj33a-etched.step / smbj33a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj33a.step / smbj33a.glb are the bare package body.

Provenance

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

  • Datasheet: MDD Microdiode Semiconductor datasheet (5 pp, sha256 95385273b5009dc9, retrieved 2026-10-12, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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