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MMSZ5258B

Public Made by Adom

by adom

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

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MMSZ5258B

Yangzhou Yangjie Elec Tech · Zener Diodes · SOD-123

MMSZ5258B from Yangzhou Yangjie Elec Tech, 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, the terminal at the marked (banded) end of the package and the bar side of the diode symbol; it goes positive of the anode in zener regulation (VZ 34.2 V min, 36 V typ, 37.8 V max at IZT = 3.4 mA for MMSZ5258B).
2 A passive Anode, the terminal opposite the marked band and the triangle side of the diode symbol; forward voltage is 0.9 V at IF = 10 mA, and power dissipation is 500 mW.

Key specifications

Parameter Value
Manufacturer Yangzhou Yangjie Elec Tech
Package SOD-123
Category Diodes
Pins 2

CAD (KiCad official)

  • Symbol: MMSZ5258B
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5258b-etched.step / mmsz5258b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5258b.step / mmsz5258b.glb are the bare package body.

Provenance

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

  • Datasheet: Yangzhou Yangjie Elec Tech datasheet (5 pp, sha256 f7748de397005fd5, 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