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DL4733A

Public Made by Adom

by adom

LGE Zener Diodes, MELF. 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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DL4733A

LGE · Zener Diodes · MELF

DL4733A 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 (suffix A, ±5%) VZ -5 5 % suffix A = ±5%; standard part is ±10% 1
Maximum dynamic impedance ZZT 7 Ω at IZT = 49 mA 2
Maximum dynamic impedance (knee) ZZK 550 Ω at IZK (see review_required) 2
Maximum regulator current IZM 178 mA Tamb = 50 2
Max surge current 890 mA 8.3 ms 2
Forward voltage VF 1.2 V IF = 200 mA 1
Power dissipation PDiss 1 W @ Tamb 50; electrodes kept at ambient temperature 1
Junction temperature TJ 175 °C 1
Storage temperature range Ts -55 175 °C 1
Thermal resistance, junction to ambient RThJA 170 K/W I = 9.5 mm (3/8 in), TL = constant 1
Nominal zener voltage VZ 5.1 V nominal, at IZT = 49 mA 2

CAD (KiCad official)

  • Symbol: DL4733A
  • 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 2026-10-21, 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