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MM3Z75

Public Made by Adom

by adom

ST Semtech Zener Diodes, SOD-323. 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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MM3Z75

ST Semtech · Zener Diodes · SOD-323

MM3Z75 from ST Semtech, in a SOD-323. 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; for MM3Z75 the Zener voltage is 70...79 V at IZT = 2 mA.
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-323
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
Dynamic Impedance ZZT 265 Ω at IZT = 2 mA 2
Reverse Leakage Current IR 0.1 μA at VR = 56 V 2
Forward Voltage VF 0.9 V at IF = 10 mA 1
Thermal Resistance Junction to Ambient Air RθJA 417 °C/W Ta = 25 °C 1
Power Dissipation Ptot 300 mW Ta = 25 °C 1
Junction Temperature Tj 150 °C Ta = 25 °C 1
Storage Temperature Range Tstg -55 150 °C Ta = 25 °C 1
Nominal Zener Voltage Vznom 75 V at IZT = 2 mA 2
Test Current IZT 2 mA Ta = 25 °C 2

CAD (KiCad official)

  • Symbol: MM3Z75
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: mm3z75-etched.step / mm3z75-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mm3z75.step / mm3z75.glb are the bare package body.

Provenance

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

  • Datasheet: ST Semtech datasheet (4 pp, sha256 72319316ef11804c, 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