Diotec Semiconductor DB50 Three-Phase Diode Bridge Rectifiers
Diotec Semiconductor DB50 Three-Phase Diode Bridge Rectifiers are high‑performance power devices designed for efficient conversion of three‑phase AC input into DC output in demanding industrial and commercial applications. Housed in a robust DB package with fast‑on terminals and chassis‑mount capability, these rectifiers integrate six silicon diodes in a single compact module to deliver reliable full‑wave rectification.
Engineered for durability and thermal stability, the Diotec DB50 rectifiers operate across a wide junction temperature range from -50°C to +150°C and support high surge current capability, with peak forward surge currents reaching approximately 450A. The devices feature a low forward voltage drop (1.05V to 1.10V at rated current) and minimal leakage current, contributing to improved efficiency and reduced power losses. These characteristics, combined with industrial‑grade reliability, make the DB50 series a dependable solution for high‑power three‑phase rectification in modern electronic systems.
Features
- Six diodes in a B6 three‑phase bridge configuration
- High current capability
- High reverse voltage ratings
- High surge current capability
- Low forward voltage drop
- Low reverse leakage current
- Industrial‑grade reliability
- Standard recovery rectifier technology
- Isolated aluminum baseplate
- Wide operating temperature range
- Robust mechanical package, DB (square/chassis mount) package with fast‑on terminals
Applications
- Three‑phase AC-DC conversion
- Industrial power supplies
- Motor drive/control systems
- Battery charging systems
- Inverters and power conversion systems
- HVAC and industrial equipment
- Welding, generator, and heavy equipment systems
- High‑power DC systems and infrastructures
Specifications
- 280V or 800V maximum alternating input voltage options
- 800V or 1600V maximum repetitive peak reverse voltage options
- 50A maximum rectified output current
- 90A maximum repetitive peak forward current
- Maximum peak forward surge currents, half sine-wave
- 450A at 50Hz (10ms)
- 500A at 60Hz (8.3ms)
- <1.05V maximum forward voltage
- <5µA maximum leakage current
- >2500VRMS maximum isolation voltage, terminal-to-case
- 1500ns typical reverse recovery time
- 1000A maximum fusing rating
- -50°C to +150°C operating junction temperature range
- Maximum admissible mounting torque
- 18lb.in. ±10% for 10-32 UNF
- 2Nm ±10% for M5
- 0.9K/W typical junction-to-case thermal resistance (per device)
- UL 94V-0 flammability-rated casting compound