component
MM1Z68
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ST Semtech Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MM1Z68
ST Semtech · Zener Diodes · SOD-123
MM1Z68 from ST Semtech, 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; the MM1Z68 is rated 68 V nominal (VZ range 64 to 72 V at IZT 2.5 mA) with total power dissipation max. 500 mW. |
| 2 | Anode | passive | Anode of the Zener diode; forward voltage is max. 0.9 V at IF = 10 mA and junction temperature max. 150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal zener voltage | Vznom | 68 | V | 2 | |||
| Dynamic impedance | ZZT | 250 | Ω | at IZT 2.5 mA | 2 | ||
| Reverse leakage current | IR | 0.2 | μA | at VR 52 V | 2 | ||
| Forward voltage | VF | 0.9 | V | at IF = 10 mA | 1 | ||
| Zener voltage tolerance (family, approximate) | -5 | 5 | % | approximately ±5%, family-level feature statement | 1 | ||
| Total power dissipation | Ptot | 500 | mW | Ta = 25 °C | 1 | ||
| Junction temperature | Tj | 150 | °C | 1 | |||
| Storage temperature range | Tstg | -55 | 150 | °C | 1 | ||
| Thermal resistance junction to ambient air | RthA | 340 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
MM1Z68 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mm1z68-etched.step/mm1z68-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm1z68.step/mm1z68.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST Semtech datasheet (4 pp, sha256
8a11e500b50e9919, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# MM1Z68
**ST Semtech** · Zener Diodes · SOD-123
MM1Z68 from ST Semtech, 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; the MM1Z68 is rated 68 V nominal (VZ range 64 to 72 V at IZT 2.5 mA) with total power dissipation max. 500 mW. |
| 2 | Anode | passive | Anode of the Zener diode; forward voltage is max. 0.9 V at IF = 10 mA and junction temperature max. 150 °C. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal zener voltage | Vznom | | 68 | | V | | 2 |
| Dynamic impedance | ZZT | | | 250 | Ω | at IZT 2.5 mA | 2 |
| Reverse leakage current | IR | | | 0.2 | μA | at VR 52 V | 2 |
| Forward voltage | VF | | | 0.9 | V | at IF = 10 mA | 1 |
| Zener voltage tolerance (family, approximate) | | -5 | | 5 | % | approximately ±5%, family-level feature statement | 1 |
| Total power dissipation | Ptot | | | 500 | mW | Ta = 25 °C | 1 |
| Junction temperature | Tj | | | 150 | °C | | 1 |
| Storage temperature range | Tstg | -55 | | 150 | °C | | 1 |
| Thermal resistance junction to ambient air | RthA | | | 340 | °C/W | | 1 |
## CAD (KiCad official)
- Symbol: `MM1Z68`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mm1z68-etched.step` / `mm1z68-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm1z68.step` / `mm1z68.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ST Semtech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586185825931702272) (4 pp, sha256 `8a11e500b50e9919`, retrieved 2026-10-17, tier: lcsc)
- **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](docs/mm1z68-datasheet.pdf)