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MM5Z22B

Public Made by Adom

by adom

ST(Semtech) Zener Diodes, SOD-523. 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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MM5Z22B

ST(Semtech) · Zener Diodes · SOD-523

MM5Z22B from ST(Semtech), in a SOD-523. 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 Cathode passive Cathode of the Zener diode (marked with the cathode line); Zener voltage 21.54...22.47 V at IZT = 5 mA for the MM5Z22B.
2 A passive Anode of the Zener diode; forward voltage max. 0.9 V at IF = 10 mA.

Key specifications

Parameter Value
Manufacturer ST(Semtech)
Package SOD-523
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
Zener Voltage Range VZT 21.54 22.47 V IZT = 5 mA 2
Dynamic Impedance ZZT 100 Ω at IZT = 5 mA 2
Reverse Leakage Current IR 0.1 μA at VR = 17 V 2
Forward Voltage VF 0.9 V IF = 10 mA 1
Thermal Resistance Junction to Ambient Air RthA 635 ℃/W Ta = 25 °C 1
Power Dissipation Ptot 200 mW Ta = 25 °C 1
Junction Temperature Tj 150 ℃ Ta = 25 °C 1
Storage Temperature Range TStg -55 150 ℃ Ta = 25 °C 1

CAD (KiCad official)

  • Symbol: MM5Z22B
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523 (KiCad packages3D, STEP)
  • 3D model files: mm5z22b-etched.step / mm5z22b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mm5z22b.step / mm5z22b.glb are the bare package body.

Provenance

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

  • Datasheet: ST(Semtech) datasheet (3 pp, sha256 5acd252c61e6c21f, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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