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1N4749

Public Made by Adom

by adom

LGE Zener Diodes, DO-41. 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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1N4749

LGE · Zener Diodes · DO-41

1N4749 from LGE, in a DO-41. 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-41
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
Power dissipation PDiss 1 W @ Tamb 50 1
Junction temperature TJ 200 °C 1
Storage temperature range Ts -55 200 °C 1
Forward voltage VF 1.2 V IF=200mA 1
Zener voltage tolerance (standard, no suffix) -10 10 % Standard zener voltage tolerance; suffix A for ±5% 1
Maximum dynamic impedance ZZT 25 Ω @IZT 2
Maximum dynamic impedance ZZK 750 Ω @IZK 2
Nominal zener voltage VZ 24 V Test current IZT 10.5 mA 2
Test current IZT 10.5 mA 2
Junction ambient thermal resistance RThJA 100 K/W I=9.5mm(3/8in), TL=constant 1

CAD (KiCad official)

  • Symbol: 1N4749
  • Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
  • 3D model: DO-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: LGE datasheet (3 pp, sha256 ea660af0dfc6f8c4, 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