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MM3Z18VST1G

Public Made by Adom

by adom

onsemi Zener Diodes, SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MM3Z18VST1G

onsemi · Zener Diodes · SOD-323

MM3Z18VST1G from onsemi, 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, indicated by the polarity band on the package; this is the zener regulating terminal.
2 Anode passive Anode terminal of the zener diode, opposite the cathode polarity band.

Key specifications

Parameter Value
Manufacturer onsemi
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
Reverse Zener Voltage VZ 17.56 18.35 V IZT = 5.0 mA 3
Maximum Zener Impedance @ IZK ZZK 80 Ω IZK = 0.5 mA 3
Maximum Zener Impedance @ IZT ZZT 45 Ω IZ = IZT @ 10% modulation 3
Reverse Leakage Current IR 0.05 µA @ VR = 12.6 V 3
Maximum Temperature Coefficient of VZ dVZ/dt 12.4 16 mV/k @ IZT1 = 5 mA 3
Max. Capacitance C 100 pF VR = 0, f = 1 MHz 3
Forward Voltage VF 0.9 V IF = 10 mA 2
Total Device Dissipation PD 300 mW FR-4 board, TA = 25°C (Note 1) 2
Junction and Storage Temperature Range TJ, Tstg -65 150 °C 2
Thermal Resistance from Junction-to-Ambient RJA 416 °C/W 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin LEADS: Plated with Pb−Sn or Sn only (Pb−Free) POLARITY: Cathode indicated by polarity band 1

CAD (KiCad official)

  • Symbol: MM3Z18VST1G
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: mm3z18vst1g-etched.step / mm3z18vst1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mm3z18vst1g.step / mm3z18vst1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (6 pp, sha256 6327225eeeaa38aa, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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