component

MMBZ33VALT1G

Public Made by Adom

by adom

onsemi ESD And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMBZ33VALT1G

onsemi · ESD And Surge Protection (TVS/ESD) · SOT-23

MMBZ33VALT1G from onsemi, in a SOT-23. 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 CATHODE 1 passive Cathode of the first Zener junction; with pin 3 it forms one unidirectional TVS (circuit tied to pins 1 and 3), with a 33 V nominal breakdown voltage for MMBZ33VALT1G.
2 CATHODE 2 passive Cathode of the second Zener junction; with pin 3 it forms a second unidirectional TVS (circuit tied to pins 2 and 3), and the device can instead be used as a single bidirectional configuration.
3 ANODE passive Common anode of both Zener junctions, shared by pins 1 and 2 in this dual common-anode SOT-23 device.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23
Category Circuit Protection
Pins 3

CAD (KiCad official)

  • Symbol: MMBZ33VALT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbz33valt1g-etched.step / mmbz33valt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbz33valt1g.step / mmbz33valt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 a000c92c23393615, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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