component

1SMB5920B

Public Made by Adom

by adom

OTW Zener Diodes, SMB. 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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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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1SMB5920B

OTW · Zener Diodes · SMB

1SMB5920B from OTW, 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer OTW
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 Vz 5.89 6.2 6.51 V @ IZT = 60.5 mA 2
Zener Voltage Tolerance -5 5 % B suffix, 5% tolerance 1
Maximum Zener Impedance ZZT 2 Ω @ IZT = 60.5 mA 2
Maximum Zener Impedance ZZK 200 Ω @ IZK = 1 mA 2
Reverse Leakage Current IR 5 μA @ VR = 4 V 2
Forward Voltage VF 1.5 V @ IF = 200 mA(DC) 1
Maximum DC Zener Current IZM 241 mA 2
DC Power Dissipation PD 3 W TL=75°C, zero lead length 1
Power Dissipation Derating above 75°C 40 mW/°C derate above 75°C 1
Maximum Steady State Power Dissipation PD 550 mW TA=25°C 1
Power Derating above 25°C 4.4 mW/°C derate above 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: 1SMB5920B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: 1smb5920b-etched.step / 1smb5920b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1smb5920b.step / 1smb5920b.glb are the bare package body.

Provenance

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

  • Datasheet: OTW datasheet (3 pp, sha256 2a717566c35b92b4, retrieved 2026-10-22, 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