component
MM5Z12VT5G
Public Made by Adomby adom
onsemi Zener Diodes, SOD-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MM5Z12VT5G
onsemi · Zener Diodes · SOD-523
MM5Z12VT5G from onsemi, in a SOD-523. 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 (polarity band) of the Zener diode; the 12 V part (MM5Z12VT5G) has VZ 11.4 V min to 12.7 V max at IZT and reverse leakage of 0.1 µA max at VR = 8.0 V. |
| 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-523 |
| 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 VZ1 | VZ1 | 11.4 | 12 | 12.7 | V | IZT1 = 5 mA, TA = 25°C | 3 |
| Zener Voltage VZ2 | VZ2 | 11.2 | 12.7 | V | IZT2 = 1 mA, TA = 25°C | 3 | |
| Maximum Zener Impedance | ZZT | 25 | Ω | @ IZT | 3 | ||
| Maximum Zener Impedance | ZZK | 80 | Ω | @ IZK = 1.0 mA | 3 | ||
| Reverse Leakage Current | IR | 0.1 | µA | @ VR = 8.0 V | 3 | ||
| Temperature Coefficient of VZ | VZ | 6 | 10 | mV/k | @ IZT | 3 | |
| Capacitance | C | 130 | pF | VR = 0, f = 1 MHz | 3 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10 mA | 3 | ||
| Total Device Dissipation | PD | 500 | mW | FR-4 board, TA = 25°C | 1 | ||
| Power Derating above 25°C | PD | 4 | mW/°C | Derate above 25°C | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 250 | °C/W | FR-4 board, single-sided copper, mounting pad 1 cm2 | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 |
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 | LEAD FINISH: 100% Matte Sn (Tin) MOUNTING POSITION: Any | 1 |
CAD (KiCad official)
- Symbol:
MM5Z12VT5G - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
mm5z12vt5g-etched.step/mm5z12vt5g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm5z12vt5g.step/mm5z12vt5g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (5 pp, sha256
a33727f30a0dc9c4, retrieved 2026-10-23, 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).
# MM5Z12VT5G
**onsemi** · Zener Diodes · SOD-523
MM5Z12VT5G from onsemi, in a SOD-523. 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 (polarity band) of the Zener diode; the 12 V part (MM5Z12VT5G) has VZ 11.4 V min to 12.7 V max at IZT and reverse leakage of 0.1 µA max at VR = 8.0 V. |
| 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-523 |
| 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 VZ1 | VZ1 | 11.4 | 12 | 12.7 | V | IZT1 = 5 mA, TA = 25°C | 3 |
| Zener Voltage VZ2 | VZ2 | 11.2 | | 12.7 | V | IZT2 = 1 mA, TA = 25°C | 3 |
| Maximum Zener Impedance | ZZT | | | 25 | Ω | @ IZT | 3 |
| Maximum Zener Impedance | ZZK | | | 80 | Ω | @ IZK = 1.0 mA | 3 |
| Reverse Leakage Current | IR | | | 0.1 | µA | @ VR = 8.0 V | 3 |
| Temperature Coefficient of VZ | VZ | 6 | | 10 | mV/k | @ IZT | 3 |
| Capacitance | C | | | 130 | pF | VR = 0, f = 1 MHz | 3 |
| Forward Voltage | VF | | | 0.9 | V | IF = 10 mA | 3 |
| Total Device Dissipation | PD | | | 500 | mW | FR-4 board, TA = 25°C | 1 |
| Power Derating above 25°C | PD | | | 4 | mW/°C | Derate above 25°C | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA | | | 250 | °C/W | FR-4 board, single-sided copper, mounting pad 1 cm2 | 1 |
| Junction and Storage Temperature Range | TJ, Tstg | -65 | | 150 | °C | | 1 |
## 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 | LEAD FINISH: 100% Matte Sn (Tin) MOUNTING POSITION: Any | 1 |
## CAD (KiCad official)
- Symbol: `MM5Z12VT5G`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `mm5z12vt5g-etched.step` / `mm5z12vt5g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm5z12vt5g.step` / `mm5z12vt5g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/mm5z12vt5-d.pdf) (5 pp, sha256 `a33727f30a0dc9c4`, retrieved 2026-10-23, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/mm5z12vt5g-datasheet.pdf)