component
MM3Z68
Public Made by Adomby adom
ST Semtech 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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README
markdownMM3Z68
ST Semtech · Zener Diodes · SOD-323
MM3Z68 from ST Semtech, 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 of the Zener diode; for MM3Z68 the Zener voltage is 64...72 V at IZT = 2 mA. |
| 2 | A | passive | Anode of the Zener diode; total power dissipation is max. 300 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| 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 |
|---|---|---|---|---|---|---|---|
| Dynamic Impedance | ZZT | 240 | Ω | at IZT = 2 mA, Ta = 25 °C | 2 | ||
| Reverse Leakage Current | IR | 0.1 | μA | at VR = 52 V, Ta = 25 °C | 2 | ||
| Forward Voltage | VF | 0.9 | V | at IF = 10 mA, Ta = 25 °C | 1 | ||
| Thermal Resistance Junction to Ambient Air | RθJA | 417 | °C/W | Ta = 25 °C | 1 | ||
| Power Dissipation | Ptot | 300 | mW | Ta = 25 °C | 1 | ||
| Junction Temperature | Tj | 150 | °C | Ta = 25 °C | 1 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | Ta = 25 °C | 1 | |
| Nominal Zener Voltage | Vznom | 68 | V | at IZT = 2 mA | 2 | ||
| Zener Test Current | IZT | 2 | mA | 2 |
CAD (KiCad official)
- Symbol:
MM3Z68 - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
mm3z68-etched.step/mm3z68-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm3z68.step/mm3z68.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST Semtech datasheet (4 pp, sha256
72319316ef11804c, 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).