component
MM5Z51
Public Made by Adomby adom
YFW 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
markdownMM5Z51
YFW · Zener Diodes · SOD-523
MM5Z51 from YFW, 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 of the Zener diode; MM5Z51 has a nominal Zener voltage of 51 V (48 to 54 V) at IZT = 1 mA. |
| 2 | Anode | passive | Anode of the Zener diode; forward voltage max 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| 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 |
|---|---|---|---|---|---|---|---|
| Total Device Dissipation | Ptot | 200 | mW | Ta = 25 °C | 1 | ||
| Junction and Storage Temperature Range | Tj, Tstg | -65 | 150 | °C | 1 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10 mA, Ta = 25 °C | 1 | ||
| Zener Voltage | VZT | 48 | 51 | 54 | V | at IZT = 1 mA, tested with pulses tp = 20 ms | 2 |
| Zener Impedance | ZZT | 180 | Ω | at IZT = 1 mA | 2 | ||
| Zener Impedance (knee) | ZZK | 500 | Ω | at IZK = 1 mA | 2 | ||
| Leakage Current | IR | 1 | µA | at VR = 39 V | 2 |
CAD (KiCad official)
- Symbol:
MM5Z51 - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
mm5z51-etched.step/mm5z51-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm5z51.step/mm5z51.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (3 pp, sha256
b2277c1e163f8bfb, 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).