component
SZMMSZ4684T1G
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
markdownSZMMSZ4684T1G
onsemi · Zener Diodes · SOD-123
SZMMSZ4684T1G 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 of the Zener diode, indicated by the polarity band; the 3.3 V nominal Zener voltage (3.13 V min to 3.47 V max at IZT = 50 µA) is developed with this pin positive relative to the anode. |
| 2 | Anode | passive | Anode of the Zener diode; forward voltage is 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 | 3.13 | 3.3 | 3.47 | V | @ IZT = 50 µA, TA = 25°C, TL = 30°C ±1°C | 3 |
| Reverse Leakage Current | IR | 7.5 | µA | @ VR = 1.5 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 | 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 | ||
| Maximum Case Temperature for Soldering | 260 | °C | 10 seconds | 1 |
CAD (KiCad official)
- Symbol:
SZMMSZ4684T1G - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
szmmsz4684t1g-etched.step/szmmsz4684t1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szmmsz4684t1g.step/szmmsz4684t1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (7 pp, sha256
98068d4fc0595c6d, 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).