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Contents

README

markdown

US5JB

YFW · Fast Recovery / High Efficiency Diodes · SMB

US5JB from YFW, 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 Cathode passive Cathode terminal of the rectifier, rated for repetitive peak reverse voltage from 50 V to 1000 V across the US5 series and an average forward rectified current of 5 A at Tc = 125 °C.
2 Anode passive Anode terminal of the rectifier, with a maximum instantaneous forward voltage of 0.95 V to 1.65 V at 5 A across the series.

Key specifications

Parameter Value
Manufacturer YFW
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
Maximum Repetitive Peak Reverse Voltage VRRM 600 V 1
Maximum RMS voltage VRMS 420 V 1
Maximum DC Blocking Voltage VDC 600 V 1
Maximum Average Forward Rectified Current IF(AV) 5 A at Tc = 125 °C 1
Peak Forward Surge Current IFSM 100 A 8.3 ms single half sine wave superimposed on rated load 1
Maximum Instantaneous Forward Voltage VF 1.65 V at 5 A 1
Maximum DC Reverse Current (Ta = 25 °C) IR 5 μA Ta = 25 °C at rated DC blocking voltage 1
Maximum DC Reverse Current (Ta = 125 °C) IR 100 μA Ta = 125 °C at rated DC blocking voltage 1
Operating and Storage Temperature Range Tj, Tstg -55 150 °C 1
Typical Thermal Resistance, junction to ambient RθJA 45 °C/W P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas 1
Typical Thermal Resistance, junction to case RθJC 15 °C/W 1

CAD (KiCad official)

  • Symbol: US5JB
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: us5jb-etched.step / us5jb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); us5jb.step / us5jb.glb are the bare package body.

Provenance

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

  • Datasheet: YFW datasheet (3 pp, sha256 7e51164c1f5dc3d0, retrieved 2026-10-15, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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