component
ZM4746A-GS18
Public Made by Adomby adom
Vishay Intertech Zener Diodes, DO-213AB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownZM4746A-GS18
Vishay Intertech · Zener Diodes · DO-213AB
ZM4746A-GS18 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance | VZ | -5 | 5 | % | Standard Zener voltage tolerance (± 5 %) per Features | 1 | |
| Reverse leakage current | IR | 5 | μA | at VR = 13.7 V | 2 | ||
| Zener impedance | ZZ | 20 | Ω | at IZT1 = 14 mA, f = 1 kHz | 2 | ||
| Zener impedance at knee | ZZK | 750 | Ω | at IZT2 = 0.25 mA, f = 1 kHz | 2 | ||
| Surge current | IZSM | 250 | mA | width of test pulse 8.3 ms (note 4) | 2 | ||
| Regulator current | IZM | 50 | mA | note (2): 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 | ||
| Zener voltage, nominal | VZ | 18 | V | at IZT1 = 14 mA | 2 | ||
| Junction to ambient thermal resistance | RthJA | 170 | K/W | junction to ambient air; valid provided that electrodes are kept at ambient temperature | 1 |
CAD (KiCad official)
- Symbol:
ZM4746A-GS18 - 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 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).