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ZM4731A-GS08
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Vishay Intertech Zener Diodes, DO-213AB. 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
markdownZM4731A-GS08
Vishay Intertech · Zener Diodes · DO-213AB
ZM4731A-GS08 from Vishay Intertech, in a DO-213AB. 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 identification band on the MELF glass body; the ZM4731A has a nominal Zener voltage of 4.3 V at IZT1 = 58 mA and a maximum regulator current of 217 mA. |
| 2 | A | passive | Anode, the end opposite the cathode band; total power dissipation is limited to 1000 mW provided the electrodes are kept at ambient temperature. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-213AB |
| 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 leakage current | IR | 10 | μA | at VR = 1 V | 2 | ||
| Dynamic resistance | ZZ | 9 | Ω | at IZT1, f = 1 kHz | 2 | ||
| Knee dynamic resistance | ZZK | 400 | Ω | at IZT2, f = 1 kHz | 2 | ||
| Surge current | IZSM | 1070 | mA | Width of test pulse 8.3 ms | 2 | ||
| Regulator current | IZM | 217 | mA | Valid provided that electrodes are kept at ambient temperature | 2 | ||
| Power dissipation | Ptot | 1000 | mW | Valid provided that electrodes are kept at ambient temperature | 1 | ||
| Junction temperature | Tj | 175 | °C | 1 | |||
| Storage temperature range | Tstg | -65 | 175 | °C | 1 | ||
| Thermal resistance junction to ambient air | RthJA | 170 | K/W | Valid provided that electrodes are kept at ambient temperature | 1 | ||
| Zener voltage nominal | VZ | 4.3 | V | at IZT1, thermal equilibrium | 2 | ||
| Zener voltage tolerance | VZ | -5 | 5 | % | Standard Zener voltage tolerance | 1 | |
| Test current | IZT1 | 58 | mA | 2 | |||
| Test current (knee) | IZT2 | 1 | mA | 2 |
CAD (KiCad official)
- Symbol:
ZM4731A-GS08 - Footprint:
Diode_SMD:D_MELF - 3D model: DO-213AB (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (4 pp, sha256
8b36a9c27239dd75, retrieved 2026-10-22, 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).