KBJ1004 – 400V 10.0A Bridge Rectifier in KBJ Package | 400V 10A Input Bridge

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The KBJ1004 is a 400V, 10.0A single-phase diode bridge engineered for offline rectification and transformer isolated AC-DC conversion PCBs requiring efficient 10A DC load conduction. With its 1.05V forward voltage architecture, it minimizes conduction loss for real-world 230VAC/115VAC transformer rails. The 170A surge withstand rating secures the rectifier stage against transformer inrush forces, bulk capacitor charging peaks, and AC cycle peak overstress. Reverse leakage is controlled at 10µA, improving standby thermal rise in repetitive AC reverse-bias cycles. The isolated, epoxy-molded KBJ 8-pin package ensures strong electrical safety isolation, stable lead alignment, and reliable mechanical support for PCB front-end rectifier modules.

Key Specifications:

  • VR: 400V

  • IF: 10.0A

  • TJ Max: 125°C

  • IFSM: 170A

  • VF: 1.05V

  • IR: 10µA

  • Trr: 10µs

  • Package: KBJ

Features:

  • 400V reverse blocking

  • Ultra-low leakage rectifier die behavior

  • High surge immunity for inrush-critical rails

  • Electrically insulated KBJ mechanical PCB-mount frame

Applications:

  • Offline 400V AC-DC supply rails

  • SMPS 10A input bridges

  • Transformer secondary DC bus modules