SanRex 3-Phase Bridge Diode Modules
SanRex 3-Phase Bridge Diode Modules are integrated high‑power rectifier solutions designed for reliable three‑phase AC‑DC conversion in industrial power electronics. The SanRex 3-phase bridge diode modules incorporate six rectifier diodes in a single compact bridge configuration, reducing component count, simplifying system design, and improving overall reliability. They are optimized for line‑frequency and low‑frequency rectification, making the devices well-suited for mains‑connected equipment.
These modules are available in a wide range of voltage and current ratings to support applications from medium‑power systems to high‑current industrial rectifiers. The components offer stable forward voltage characteristics, high average current capability, and strong surge current tolerance, enabling dependable operation during startup, overload, and transient conditions. The diode structures are designed for balanced current sharing and continuous operation in demanding electrical environments.
From a mechanical and thermal perspective, the SanRex 3‑phase bridge diode modules feature rugged power module construction with low junction‑to‑case thermal resistance for efficient heat dissipation. Designed for direct heatsink mounting, these modules support high maximum junction temperatures and long service life. Secure screw terminals and standardized package outlines make the devices easy to install and integrate, supporting use in motor drives, inverters, UPS systems, battery chargers, welding equipment, industrial DC power supplies, renewable energy systems, and transportation power electronics.
Features
- Three‑phase bridge configuration
- Integrated 6‑diode three‑phase bridge rectifier in a single module
- Designed specifically for three‑phase AC-DC conversion
- Simplifies circuit design and reduces wiring complexity
- Electrical performance
- Wide repetitive peak reverse voltage ratings (typically 40V to 1600V class, depending on model)
- Broad average forward current ratings (approximately 20A to 200A class)
- High surge current capability (IFSM) to withstand inrush and overload conditions
- Stable electrical characteristics suitable for continuous industrial operation
- Rectification characteristics
- Optimized for line‑frequency and low‑frequency rectification
- Low forward voltage drop relative to current rating, supporting improved efficiency
- Balanced diode characteristics for uniform current sharing within the bridge
- Thermal performance
- Low junction‑to‑case thermal resistance for efficient heat dissipation
- Designed for direct mounting to heatsinks
- High maximum junction temperature rating (typically up to +150°C)
- Capable of sustained high‑current operation when properly cooled
- Mechanical / packaging features
- Compact power module construction integrating all six diodes
- Robust molded or metal‑base packages, depending on the series
- Screw‑type power terminals for secure electrical connections
- Standardized outline dimensions across current classes for design reuse
- Mechanical strength suitable for industrial vibration and handling
- Reliability and durability
- High reliability under repetitive thermal and electrical stress
- Designed for long service life in industrial environments
- Resistance to thermal cycling and mechanical fatigue
- Consistent performance across wide operating conditions
- Design and integration advantages
- Reduced part count compared to discrete diode solutions
- Simplified assembly and improved system reliability
- Suitable for compact, high‑power rectifier front‑ends
- Available in multiple current and voltage combinations to match system needs
- Compliance and quality
- Manufactured under SanRex industrial quality standards
- Intended for professional and industrial power electronics applications
- RoHS‑compliant materials
Applications
- Three‑phase AC-DC rectifiers
- Motor drive systems
- Inverter power supplies
- Uninterruptible Power Supplies (UPS)
- Battery charging systems
- Welding power supplies
- Industrial DC power supplies
- Renewable energy systems
- HVAC and compressor drives
- Railway and transportation equipment
- Industrial automation equipment
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