component

MMSZ4704

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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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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MMSZ4704

Changjing · Zener Diodes · SOD-123

MMSZ4704 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 with band, shown as "-"); reverse zener voltage VZ is measured at IZT here, with power dissipation limited to 350 mW.
2 A passive Anode (unbanded end, shown as "+"); forward voltage VF is 0.9 V at IF = 10 mA.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOD-123
Category Diodes
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
Power Dissipation PD 350 mW Device mounted on ceramic PCB; 5.0mm×7.0mm with pad areas 35 mm2 1
Forward voltage VF 0.9 V IF=10mA 1
Thermal Resistance, Junction to Ambient Air RθJA 357 ℃/W Device mounted on ceramic PCB; 5.0mm×7.0mm with pad areas 35 mm2 1
Operation Junction and Storage Temperature Range TJ,Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: MMSZ4704
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz4704-etched.step / mmsz4704-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz4704.step / mmsz4704.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 70f51aea6c7fa28d, retrieved 2026-10-17, 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