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MMSZ5247C-HE3-08
Public Made by Adomby adom
Vishay Intertech Zener Diodes, SOD-123. 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
markdownMMSZ5247C-HE3-08
Vishay Intertech · Zener Diodes · SOD-123
MMSZ5247C-HE3-08 from Vishay Intertech, 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 | K | passive | Cathode, marked by the cathode bar; the 17 V nominal Zener (2 % tolerance) is reached at this pin when reverse biased, with test current IZT1 of 7.4 mA. |
| 2 | A | passive | Anode; Zener current flows to it from the cathode in reverse operation, and total power dissipation is limited to 500 mW (300 mW on FR-4 board). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance (C suffix, ±2 %) | VZ | -2 | 2 | % | 1 | ||
| Reverse leakage current | IR | 0.1 | μA | at VR = 13 V | 2 | ||
| Dynamic resistance | ZZ | 19 | Ω | at IZT1 = 7.4 mA | 2 | ||
| Dynamic resistance (knee) | ZZK | 600 | Ω | at IZT2 = 0.25 | 2 | ||
| Forward voltage | VF | 0.9 | V | at IF = 10 mA | 2 | ||
| Power dissipation | Ptot | 500 | mW | RthJL = 250 K/W | 1 | ||
| Power dissipation on FR-4 board | Ptot | 300 | mW | On FR-4 board with recommended soldering footprint | 1 | ||
| Junction temperature | Tj | 150 | 1 | ||||
| Storage temperature range | Tstg | -65 | 150 | °C | 1 | ||
| Operating temperature range | Top | -55 | 150 | °C | 1 | ||
| Zener voltage (nominal) | VZ | 17 | V | at IZT1 = 7.4 mA | 2 | ||
| Temperature coefficient of VZ | αVZ | 0.081 | %/°C | 2 | |||
| Thermal resistance junction to lead | RthJL | 250 | K/W | 1 | |||
| Thermal resistance junction to ambient | RthJA | 420 | K/W | According to JEDEC 51-3 on FR-4 board with recommended soldering footprint | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5247C-HE3-08 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5247c-he3-08-etched.step/mmsz5247c-he3-08-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5247c-he3-08.step/mmsz5247c-he3-08.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (6 pp, sha256
19d1a0b9567dac98, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).