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MM3Z39-MS

Public Made by Adom

by adom

MSKSEMI 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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MM3Z39-MS

MSKSEMI · Zener Diodes · SOD-323

MM3Z39-MS from MSKSEMI, 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; MM3Z39-MS has a nominal zener voltage of 39 V (37 V to 41 V) at IZT = 2 mA, with total power dissipation of max 200 mW.
2 Anode passive Anode of the zener diode; forward voltage is 0.9 V at IF = 10 mA.

Key specifications

Parameter Value
Manufacturer MSKSEMI
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
Zener Voltage VZT 37 39 41 V at IZT = 2 mA, pulse 20 ms 3
Test Current IZT 2 mA 3
Dynamic Impedance ZZT 100 Ω at IZT 3
Reverse Current IR 0.1 μA at VR = 30 V 3
Reverse Voltage for IR VR 30 V IR test voltage 3
Zener Voltage Tolerance -5 5 % Tolerance approximately ±5% 2
Power Dissipation Ptot 200 mW Ta = 25°C 2
Forward Voltage VF 0.9 V IF = 10 mA, Ta = 25°C 2
Thermal Resistance Junction to Ambient RθJA 417 °C/W PCB mounted with 2.0" x 2.0" copper pads 2
Operating and Storage Temperature Range Tj, Tstg -55 150 °C Ta = 25°C 2

CAD (KiCad official)

  • Symbol: MM3Z39-MS
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: mm3z39-ms-etched.step / mm3z39-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mm3z39-ms.step / mm3z39-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (5 pp, sha256 ad4064742873770b, 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