The Fuji 6DI20B-050 is a six-pack diode module combining six rectifier diodes in a single isolated package, rated for 20A continuous forward current and 500V repetitive peak reverse voltage (VRRM). This configuration integrates all six diodes of a three-phase full-wave bridge into one compact housing, delivering consistent thermal performance and simplified power stage construction. The module is suited for AC-DC front-end rectification, freewheeling, and regenerative braking circuits where space efficiency, thermal reliability, and repeatable switching characteristics are essential in demanding industrial environments.

The 6DI20B-050 sees broad deployment across industrial variable frequency drives (VFDs), servo amplifier front ends, uninterruptible power supplies (UPS), welding inverters, and elevator drive systems. Its six-pack topology is a preferred building block for three-phase rectifier bridges in equipment ranging from CNC machine tool spindle drives to industrial HVAC compressor controls. Design engineers and MRO teams rely on this form factor for both original equipment builds and direct replacement of failed rectifier stages in legacy machinery where board space and connector compatibility are fixed constraints.

Quick Reference: 6DI20B-050

Key Features of the 6DI20B-050:

• Six-pack full-bridge diode configuration for complete three-phase rectification in a single module
• 500V repetitive peak reverse voltage (VRRM) suitable for 230/400V AC line-side applications
• 20A continuous forward current rating with low forward voltage drop for reduced conduction losses
• Isolated baseplate construction enables direct heatsink mounting without additional insulation hardware
• Compact module footprint reduces PCB real estate and simplifies bus bar or direct PCB connection
• Compatible with standard Fuji six-pack mounting patterns, ensuring drop-in replacement capability for existing drive designs

With a factory lead time of 99 weeks for new production, the 6DI20B-050 presents a significant procurement challenge for maintenance teams managing unplanned downtime and for OEMs managing production schedules. Extended lead times on Fuji diode modules are driven by semiconductor substrate allocation and factory run cycles. Sourcing from a stocking distributor with verified OEM inventory is the most reliable path to avoiding extended equipment outages. ATI Accurate Technology maintains ready stock of hard-to-find and long-lead-time Fuji power modules precisely for these situations, providing a direct alternative to waiting on factory allocation.

ATI Accurate Technology is located in Palmetto, Florida and specializes in IGBTs, diodes, thyristors, and rectifier modules for industrial power electronics. In-stock orders placed before 5PM EST ship same day. Contact our team for volume pricing, cross-reference assistance, or technical questions. Call 239-734-7566 or email sales@igbts.us.