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MMSZ4686

Public Made by Adom

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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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MMSZ4686

Changjing · Zener Diodes · SOD-123

MMSZ4686 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, the end marked with the band on the package; it is the zener reverse-breakdown side (VZ at IZT), and the part is rated PD 350 mW, Tj 150 °C.
2 A passive Anode, the unbanded end of the package; 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
Thermal Resistance, Junction to Ambient Air RθJA 357 ℃/W Device mounted on ceramic PCB 5.0mm×7.0mm with pad areas 35 mm2 1
Junction Temperature Tj 150 ℃ 1
Storage Temperature Range Tstg -55 150 ℃ 1
Forward voltage VF 0.9 V @IF =10mA 1

CAD (KiCad official)

  • Symbol: MMSZ4686
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz4686-etched.step / mmsz4686-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz4686.step / mmsz4686.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 df40dc14aae3db81, retrieved 2026-10-18, 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