component
MM5Z9V1ST1G
Public Made by Adomby adom
onsemi Zener Diodes, SOD-523. 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
markdownMM5Z9V1ST1G
onsemi · Zener Diodes · SOD-523
MM5Z9V1ST1G 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 terminal, identified by the polarity band on the SOD-523 package; for the MM5Z9V1ST1G the Zener voltage VZ is 8.85 V min to 9.23 V max at IZT 5.0 mA. |
| 2 | Anode | passive | Anode terminal of the Zener diode (Style 1 pin assignment); the series 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage @ IZT | VZ | 8.85 | 9.23 | V | @ IZT, Izt = 5.0 mA | 2 | |
| Maximum Zener Impedance @ IZK | ZZK | 160 | IZ = 1.0 mA | 2 | |||
| Maximum Zener Impedance @ IZT | ZZT | 15 | IZ = IZT @ 10% Mod | 2 | |||
| Reverse Leakage Current @ VR | IR | 0.5 | µA | @ VR = 6.0 V | 2 | ||
| Maximum Temperature Coefficient of VZ | dVZ/dt | 3.8 | 7 | mV/k | @ IZT1 = 5 mA | 2 | |
| Max. Capacitance | C | 130 | pF | @ VR = 0 and f = 1 MHz | 2 | ||
| Forward Voltage | VF | 0.9 | V | @ IF = 10 mA | 2 | ||
| Total Device Dissipation FR-4 Board | PD | 500 | mW | @ TA = 25°C (Note 1) | 1 | ||
| Derate above 25°C | 4 | mW/°C | Derate above 25°C (Note 1) | 1 | |||
| Thermal Resistance from Junction-to-Ambient | RJA | 250 | °C/W | (Note 1) FR-4 board, 1 cm² mounting pad | 1 | ||
| Operating Junction and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
MM5Z9V1ST1G - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
mm5z9v1st1g-etched.step/mm5z9v1st1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm5z9v1st1g.step/mm5z9v1st1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (5 pp, sha256
6752ee2f7ea93ddc, retrieved 2026-10-14, 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).