component

SMBJ5369B

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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SMBJ5369B

LGE · Zener Diodes · SMB

SMBJ5369B 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; the zener (SMBJ5369B, VZ 51 V at IZT 25 mA) is reverse biased with this end positive.
2 A passive Anode terminal of the zener diode; forward voltage max 1.2 V at IF = 1.0 A.

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
Regulator voltage tolerance (B suffix) VZ -5 5 % Suffix B indicates ±5% tolerance 2
Maximum dynamic impedance ZZ 27 OHMS A&B suffix, at IZT 2
Maximum reverse current IR 0.5 μA @ VR = 38.8 V (B suffix) 2
Maximum regulator current IZM 93 mA B,C,D suffix 2
Maximum dynamic knee impedance Zzk 230 OHMS @ 1.0 mA 2
Maximum surge current IZSM 2.5 AMPS Non-recurrent half-sine wave, 8.3 ms 2
Maximum voltage regulation ΔVZ 0.9 VOLTS Difference between voltage at 10% and 50% of IZM 2
Power dissipation PD 5 W TL = 25 °C 1
Maximum forward voltage VF 1.2 V IF = 1.0 A 1
Thermal resistance, junction to ambient RӨJA 90 °C/W Mounted on FR4 PC board (1 oz Cu) with recommended footprint 1
Thermal resistance, junction to lead RӨJL 25 °C/W Mounted on FR4 PC board (1 oz Cu) with recommended footprint 1
Operating and storage temperature range TJ, TSTG -65 150 °C 1
Regulator voltage VZ 51 V Nominal, at IZT 2
Test current IZT 25 mA 2

CAD (KiCad official)

  • Symbol: SMBJ5369B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: smbj5369b-etched.step / smbj5369b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj5369b.step / smbj5369b.glb are the bare package body.

Provenance

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

  • Datasheet: LGE datasheet (3 pp, sha256 9441d4af3ecff01f, 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