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1SMB5919BG

Shikues · Zener Diodes · SMB

1SMB5919BG from Shikues, 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 of the zener diode (pin 1 per the PINNING table); for 1SMB5919BG, nominal zener voltage 5.6 V (5.32 to 5.88 V) at IZT 66.9 mA.
2 A passive Anode of the zener diode (pin 2 per the PINNING table); max total power dissipation 3.0 W, junction and storage temperature -55 to +150 °C.

Key specifications

Parameter Value
Manufacturer Shikues
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 (min/max) VZ 5.32 5.6 5.88 V @ IZT = 66.9 mA 3
Zener Test Current IZT 66.9 mA 3
Maximum Zener Impedance ZZT 2 Ω @ IZT 3
Maximum Zener Impedance at knee ZZK 250 Ω @ IZK = 1 mA 3
Reverse Leakage Current IR 5 µA @ VR = 3 V 3
Maximum DC Zener Current IZM 267 mA 3
Forward Voltage VF 1.5 V IF = 200 mA(DC) 2
Zener voltage tolerance -5 5 % type numbers indicate a tolerance of 5% 2
DC power dissipation PD 3 W TL=75°C, zero lead length, Cu-pad 5mm x 5mm 1
Steady state power dissipation PD 550 mW @ TA=25°C 1
Junction temperature range TJ -55 150 °C 1
Storage temperature range TSTG -55 150 °C 1
Junction to ambient thermal resistance RthJA 226 °C/W 1
Junction to lead thermal resistance RthJL 25 °C/W 1

CAD (KiCad official)

  • Symbol: 1SMB5919BG
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: 1smb5919bg-etched.step / 1smb5919bg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1smb5919bg.step / 1smb5919bg.glb are the bare package body.

Provenance

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

  • Datasheet: Shikues datasheet (4 pp, sha256 ce01d710c11674f4, 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