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3SMB5944B

Public Made by Adom

by adom

LGE Zener Diodes, SMB. 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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3SMB5944B

LGE · Zener Diodes · SMB

3SMB5944B from LGE, in a SMB. 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 by the color band on the package; the 3SMB5944B has a nominal Zener voltage of 62 V at IZT = 6.0 mA.
2 A passive Anode; the datasheet gives only the cathode band polarity, with maximum forward voltage of 1.5 V at IF = 200 mA and DC power dissipation of 3.0 W at TL = 75 °C.

Key specifications

Parameter Value
Manufacturer LGE
Package SMB
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 VZ -5 5 % Suffix B indicates ± 5.0% tolerance 2
Maximum Zener Impedance ZZT 100 Ω @ IZT = 6.0 mA 2
Maximum Zener Impedance (knee) ZZK 1500 Ω @ IZK = 0.25 mA 2
Maximum Reverse Leakage Current IR 1 μA @ VR = 47.1 V 2
Maximum DC Zener Current IZM 24 mA 2
Maximum Forward Voltage VF 1.5 Volts IF = 200 mA 1
DC Power Dissipation PD 3 Watts TL = 75 °C (Note1) 1
Junction Temperature Range TJ -55 150 °C 1
Storage Temperature Range Ts -55 150 °C 1
Nominal Zener Voltage VZ 62 V @ IZT = 6.0 mA 2
Zener Test Current IZT 6 mA 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper (1) TL = Lead temperature at 5.0 mm2 ( 0.013 mm thick ) copper land areas. 1

CAD (KiCad official)

  • Symbol: 3SMB5944B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: 3smb5944b-etched.step / 3smb5944b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 3smb5944b.step / 3smb5944b.glb are the bare package body.

Provenance

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

  • Datasheet: LGE datasheet (5 pp, sha256 3b15c982b0998b75, retrieved 2026-10-22, tier: lcsc)
  • 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