component
MM3Z3V3ST1G
Public Made by Adomby adom
onsemi Zener Diodes, SOD-323. 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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Contents
README
markdownMM3Z3V3ST1G
onsemi · Zener Diodes · SOD-323
MM3Z3V3ST1G from onsemi, 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, marked by the polarity band; the Zener voltage VZ of MM3Z3V3ST1G is 3.32 V min to 3.53 V max at IZT = 5.0 mA, with the cathode taken positive relative to the anode in reverse (Zener) operation. |
| 2 | Anode | passive | Anode; forward voltage VF is 0.9 V max at IF = 10 mA, and junction and storage temperature range is −65 to +150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 | VZ | 3.32 | 3.53 | V | IZT = 5.0 mA, TA = 25°C | 3 | |
| Maximum Zener Impedance | ZZT | 95 | Ω | IZ = IZT | 3 | ||
| Maximum Zener Impedance at knee | ZZK | 1000 | Ω | IZ = 0.5 mA | 3 | ||
| Reverse Leakage Current | IR | 5 | µA | VR = 1.0 V | 3 | ||
| Temperature Coefficient of VZ | dVZ/dt | -3.5 | 0 | mV/K | IZT1 = 5 mA | 3 | |
| Capacitance | C | 450 | pF | VR = 0, f = 1 MHz | 3 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10 mA | 2 | ||
| Total Device Dissipation | PD | 300 | mW | FR-4 board, TA = 25°C | 2 | ||
| Power Derating above 25°C | PD | 2.4 | mW/°C | Derate above 25°C | 2 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 2 | ||
| Thermal Resistance Junction-to-Ambient | RθJA | 416 | °C/W | FR-4 board, 1 cm2 pad | 2 | ||
| Test Current | IZT | 5 | mA | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | LEADS: Plated with Pb−Sn or Sn only (Pb−Free) POLARITY: Cathode indicated by polarity band | 1 |
CAD (KiCad official)
- Symbol:
MM3Z3V3ST1G - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
mm3z3v3st1g-etched.step/mm3z3v3st1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm3z3v3st1g.step/mm3z3v3st1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (6 pp, sha256
6327225eeeaa38aa, retrieved 2026-10-22, tier: lcsc) - 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).