component

1SMB5942B

Public Made by Adom

by adom

PAKER 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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1SMB5942B

PAKER · Zener Diodes · SMB

1SMB5942B from PAKER, 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, the end marked with the color band; the zener is reverse-biased with this pin positive, with a nominal Vz of 51 V (48.45 V min to 53.55 V max) at IZT = 7.3 mA.
2 A passive Anode, the end opposite the color band; the datasheet gives a 3.0 W DC power dissipation rating at TL = 75°C.

Key specifications

Parameter Value
Manufacturer PAKER
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
Nominal Zener Voltage VZ 48.45 51 53.55 V IZT = 7.3 mA 2
Zener Voltage Tolerance (suffix B) -5 5 % Suffix B indicates ±5.0% tolerance 2
Zener Impedance ZZT 70 Ω @ IZT = 7.3 mA 2
Knee Zener Impedance ZZK 1100 Ω @ IZK = 0.25 mA 2
Leakage Current IR 1 μA @ VR = 38.8 V 2
Maximum DC Zener Current IZM 29 mA DC 2
DC Power Dissipation PD 3 W TL=75°C, zero lead length, Cu-pad 5mm x 5mm 1
Junction Temperature Range TJ -55 150 °C 1
Storage Temperature Range TSTG -55 150 °C 1
Zener Test Current IZT 7.3 mA Test current for VZ and ZZT 2
Knee Test Current IZK 0.25 mA Test current for ZZK 2

CAD (KiCad official)

  • Symbol: 1SMB5942B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: 1smb5942b-etched.step / 1smb5942b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1smb5942b.step / 1smb5942b.glb are the bare package body.

Provenance

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

  • Datasheet: PAKER datasheet (3 pp, sha256 f6f70e24fef94239, 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