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SML4746A-E3

Public Made by Adom

by adom

Vishay Intertech Zener Diodes, DO-214AC(SMA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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SML4746A-E3

Vishay Intertech · Zener Diodes · DO-214AC(SMA)

SML4746A-E3 from Vishay Intertech, in a DO-214AC(SMA). 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 with cathode band); Zener voltage VZ nominal 18 V at IZT1 = 14 mA for SML4746, with ±5 % tolerance for suffix A.
2 A passive Anode; the datasheet shows only a two-terminal DO-214AC package with a cathode band and gives no explicit pin numbers.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
Package DO-214AC(SMA)
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 (suffix A) -5 5 % Standard voltage tolerance ±10 %, suffix A ±5 % 1
Reverse current IR 5 µA at VR = 13.7 V 2
Dynamic resistance ZZ 20 Ω at IZT1 = 14 mA 2
Dynamic resistance (knee) ZZK 750 Ω at IZT2 = 0.25 mA 2
Surge current IRM 250 mApk Non-repetitive, 8.3 ms pulse width square wave or equivalent sine-wave superimposed on IZT 2
Power dissipation Ptot 1000 mW TL = 75 °C 1
Junction temperature Tj 150 °C 1
Storage temperature range Tstg -65 150 °C 1
Zener voltage nominal VZ 18 V at IZT1 = 14 mA 2
Zener test current IZT1 14 mA 2

CAD (KiCad official)

  • Symbol: SML4746A-E3
  • Footprint: Diode_SMD:D_SMA
  • 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
  • 3D model files: sml4746a-e3-etched.step / sml4746a-e3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sml4746a-e3.step / sml4746a-e3.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Vishay Intertech datasheet (5 pp, sha256 15b3fea9a6e65941, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF