component

MMSZ4709T1G

Public Made by Adom

by adom

onsemi Zener Diodes, SOD-123. 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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MMSZ4709T1G

onsemi · Zener Diodes · SOD-123

MMSZ4709T1G from onsemi, in a SOD-123. 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 is the terminal marked by the polarity band on the SOD-123 package (Style 1: pin 1 = cathode).
2 Anode passive Anode is the opposite terminal from the cathode (Style 1: pin 2 = anode); the datasheet states no pin-specific electrical limits.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOD-123
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 (nominal 24 V, min 22.80, max 25.20 for MMSZ4709T1G) VZ 22.8 24 25.2 V @ IZT (column value 50, printed 'A'); Note 3: nominal measured at TL = 30°C ±1°C 3
Reverse Leakage Current IR 0.01 A @ VR = 18.2 V 3
Forward Voltage VF 0.9 V @ IF = 10 mA 3
Total Power Dissipation on FR-5 Board PD 500 mW @ TL = 75°C, (Note 1) FR-5 = 3.5 X 1.5 inches, minimum recommended footprint 1
Power Derating above 75°C 6.7 mW/°C Derated above TL = 75°C 1
Thermal Resistance, Junction-to-Ambient RJA 340 °C/W (Note 2) thermal resistance measured via infrared scan method 1
Thermal Resistance, Junction-to-Lead RJL 150 °C/W (Note 2) thermal resistance measured via infrared scan method 1
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: MMSZ4709T1G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz4709t1g-etched.step / mmsz4709t1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz4709t1g.step / mmsz4709t1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 9af21e332095319e, retrieved 2026-10-18, 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