component

MMSZ5238B

Public Made by Adom

by adom

Changjing Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMSZ5238B

Changjing · Zener Diodes · SOD-123

MMSZ5238B from Changjing, in a SOD-123. 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 '-' and the banded end in the package drawing; the zener breakdown VZ is 8.7V nominal (8.27V to 9.14V) at IZT = 20mA for the MMSZ5238B.
2 A passive Anode, marked '+' in the package drawing; forward voltage is 0.9V at IF = 10mA and power dissipation is 350mW.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOD-123
Category Diodes
Pins 2

CAD (KiCad official)

  • Symbol: MMSZ5238B
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5238b-etched.step / mmsz5238b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5238b.step / mmsz5238b.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (2 pp, sha256 f0ca04b4c091d9d6, retrieved 2026-10-09, 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