component

MM3Z18VB

Public Made by Adom

by adom

onsemi Zener Diodes, SOD-323FL. 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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MM3Z18VB

onsemi · Zener Diodes · SOD-323FL

MM3Z18VB from onsemi, in a SOD-323FL. 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 The band-marked terminal is the cathode per the connection diagram, and the datasheet states no further electrical limits for this pin.
2 A passive The terminal without the cathode band is the anode of the Zener diode, and the datasheet states no further electrical limits for this pin.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOD-323FL
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 VZ 17.64 18 18.36 V IZT = 5 mA; pulse test 10 ms 2
Zener voltage tolerance (B series, standard) -2 2 % B series standard tolerance on nominal VZ 2
Zener impedance ZZT 42 Ω IZT = 5 mA 2
Zener impedance at knee ZZK 212 Ω IZK = 1 mA 2
Reverse leakage current IR 0.045 A VR = 12.6 V 2
Forward voltage VF 1 V IF = 10 mA 1
Power dissipation PD 200 mW TA = 25°C (table header) 1
Storage temperature range TSTG -65 150 C 1
Maximum junction temperature TJ 150 C 1
Thermal resistance, junction to ambient RJA 595 C/W 1

CAD (KiCad official)

  • Symbol: MM3Z18VB
  • Footprint: Diode_SMD:D_SOD-323F
  • 3D model: SOD-323FL (KiCad packages3D, STEP)
  • 3D model files: mm3z18vb-etched.step / mm3z18vb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mm3z18vb.step / mm3z18vb.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 35648400ecaafb92, retrieved 2026-10-16, tier: lcsc)
  • 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