component

DL4743A

Public Made by Adom

by adom

LGE Zener Diodes, MELF. Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint 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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docs Publish 0.1.0 · Ray
viewers dl4743a: symbol repaired (D_Zener, cathode pad 1) · Ray
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dl4743a.glb Publish 0.1.0 · Ray
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dl4743a.kicad_sym dl4743a: symbol repaired (D_Zener, cathode pad 1) · Ray
dl4743a.lbr dl4743a: symbol repaired (D_Zener, cathode pad 1) · Ray
dl4743a.step Publish 0.1.0 · Ray
package.json Brief: a diode is polarised (pin 1 = cathode); the "Unpolarised two-terminal part" sentence was wrong · Ray
page.json brief: polarity sentence corrected · Ray
README.md Publish 0.1.0 · Ray

DL4743A

LGE · Zener Diodes · MELF

DL4743A from LGE, in a MELF. 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 MELF
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 -5 5 % suffix A 1
Nominal zener voltage Vz 13 V DL4743 nominal 2
Test current IZT 19 mA DL4743 2
Maximum dynamic impedance ZZT 10 Ω at IZT 2
Maximum dynamic impedance knee ZZK 700 Ω at IZK 2
Forward voltage VF 1.2 V IF=200mA 1
Power dissipation PDiss 1 W Tamb 50 1
Junction temperature TJ 175 °C 1
Storage temperature range Ts -55 175 °C 1
Junction to ambient thermal resistance RThJA 170 K/W Junction ambient I=9.5mm(3/8 ), TL=constant 1

CAD (KiCad official)

  • Symbol: DL4743A
  • Footprint: Diode_SMD:D_MELF
  • 3D model: MELF (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: LGE datasheet (3 pp, sha256 a224b6085d68189f, retrieved 2026-10-28, 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