KBU1004 – 400V 10.0A Single-Phase Bridge Rectifier in KBU Package | 400V 10A Rectifier Bridge

The KBU1004 is a 400V 10.0A single-phase rectifier bridge designed for offline AC-DC converter stages, industrial supply rails, and transformer fed secondary rectification architectures demanding high surge tolerance and energy-efficient conduction behavior. With ultra-low 10µA reverse leakage, it minimizes off-state loss, prevents unwanted thermal accumulation, and supports stable long-term rectification in high-duty bridge circuits. Featuring a controlled 1.05V forward voltage drop, it reduces conduction dissipation under continuous 10A DC loads. Engineered for 300A surge resilience, the device safeguards critical AC-input bridge stages from transformer inrush peaks, bulk capacitor charging stress, line-transient overstress, and reverse-blocking breakdown risk during AC cycling conditions. The insulated epoxy-molded KBU package guarantees mechanical robustness, reliable lead pin alignment, PCB-optimized terminal spacing, electrical safety isolation, and long-term stability against vibration, humidity, and industrial environmental stress making it ideal for 400V offline power rails, 10A front-end rectifier bridges, and AC-DC converter boards operating under continuous load cycles in both industrial and consumer energy conversion systems.

Key Specifications:

• VR: 400V

• IF: 10.0A DC

• TJ max: 125°C

• IFSM: 300A

• VF: 1.05V

• IR: 10µA

• Trr: 10µs

• Package: KBU

Features:

• 400V reverse blocking rating

• Low-leak efficient die behavior

• 300A surge withstand for inrush immunity

• Insulated epoxy-molded KBU housing

Applications:

• Offline 400V AC-DC converter bridges

• 10A SMPS front-end rectifier modules

• Industrial high-duty conversion rails