component

1SMA4731A

Public Made by Adom

by adom

LGE Zener Diodes, DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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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1SMA4731A

LGE · Zener Diodes · DO-214AC(SMA)

1SMA4731A from LGE, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer LGE
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 (nominal) VZ 4.1 4.3 4.5 V VZ @ IZT = 58.0 mA 2
Zener voltage tolerance (suffix A) -5 5 % Suffix A indicates ±5.0% tolerance 2
Maximum Zener impedance ZZT 9 Ω @ IZT = 58.0 mA 2
Maximum Zener impedance ZZK 400 Ω @ IZK = 1.00 mA 2
Maximum leakage current IR 10 uA @ VR = 1.0 V 2
Forward voltage VF 1.2 V IF = 200 mA (for all types) 2
Peak power dissipation PD 1 W TA = 50°C (Note 1) 1
Power derating above 50°C 6.67 mW/°C Derate above 50°C (Note 1) 1
Operating and storage temperature range TJ, TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: 1SMA4731A
  • Footprint: Diode_SMD:D_SMA
  • 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
  • 3D model files: 1sma4731a-etched.step / 1sma4731a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma4731a.step / 1sma4731a.glb are the bare package body.

Provenance

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

  • Datasheet: LGE datasheet (4 pp, sha256 0412bb4629e826db, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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