component
SZMMSZ4686T1G
Public Made by Adomby adom
onsemi Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSZMMSZ4686T1G
onsemi · Zener Diodes · SOD-123
SZMMSZ4686T1G 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, indicated by the polarity band; Zener reverse-voltage terminal (VZ 3.70 V min, 3.9 V nom, 4.10 V max at IZT = 50 µA for the MMSZ4686 device). |
| 2 | A | passive | Anode terminal of the Zener diode (forward voltage VF = 0.9 V max at IF = 10 mA). |
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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage | VZ | 3.7 | 3.9 | 4.1 | V | @ IZT = 50 µA, TA = 25°C | 3 |
| Reverse Leakage Current | IR | 5 | µA | @ VR = 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 | 1 | ||
| Power Derating above 75°C | PD | 6.7 | mW/°C | Derated above 75°C | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 340 | °C/W | Note 2 | 1 | ||
| Thermal Resistance, Junction-to-Lead | RθJL | 150 | °C/W | Note 2 | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SZMMSZ4686T1G - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
szmmsz4686t1g-etched.step/szmmsz4686t1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szmmsz4686t1g.step/szmmsz4686t1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (7 pp, sha256
9af21e332095319e, retrieved 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).