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MMSZ4688T3G

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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MMSZ4688T3G

onsemi · Zener Diodes · SOD-123

MMSZ4688T3G 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 pin 1 and is marked by the polarity band on the package.
2 Anode passive Anode is pin 2 of the two-terminal Zener diode in the SOD-123 package.

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 VZ 4.47 4.7 4.94 V @ IZT = 50 µA; TA = 25°C unless otherwise noted 3
Forward Voltage VF 0.9 V @ IF = 10 mA 2
Total Power Dissipation on FR-5 Board PD 500 mW @ TL = 75°C (Note 1, FR-5 board) 1
Thermal Resistance, Junction-to-Ambient RJA 340 °C/W Note 2, infrared scan method 1
Thermal Resistance, Junction-to-Lead RJL 150 °C/W Note 2, infrared scan method 1
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1
Reverse Leakage Current IR 10 µA @ VR = 3 V 3
Power Derating above 75°C PD 6.7 mW/°C Derated above TL = 75°C (FR-5 board) 1

CAD (KiCad official)

  • Symbol: MMSZ4688T3G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz4688t3g-etched.step / mmsz4688t3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz4688t3g.step / mmsz4688t3g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 0fe87dc026a74c1c, 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