component

MMSZ5254B

Public Made by Adom

by adom

hongjiacheng 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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MMSZ5254B

hongjiacheng · Zener Diodes · SOD-123

MMSZ5254B from hongjiacheng, 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 by the cathode band; MMSZ5254B zener voltage is 27.0V nominal (25.65V to 28.35V) at IZT=5.0mA, with leakage of 0.1µA max at VR=21V.
2 A passive Anode, the end opposite the cathode band; forward voltage is 0.9V at IF=10mA and power dissipation is limited to 500mW.

Key specifications

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

CAD (KiCad official)

  • Symbol: MMSZ5254B
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5254b-etched.step / mmsz5254b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5254b.step / mmsz5254b.glb are the bare package body.

Provenance

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

  • Datasheet: hongjiacheng datasheet (5 pp, sha256 fec00843f279bccf, 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