Content last revised on November 7, 2025
Sanrex DF30AA160 | Robust 1600V Three-Phase Diode Rectifier Bridge
The Sanrex DF30AA160 is a high-performance three-phase diode bridge module engineered for demanding power conversion applications. Encapsulating six high-reliability diodes in a single, industrially proven package, this module streamlines the front-end rectification stage for systems like AC motor drives, uninterruptible power supplies (UPS), and high-capacity battery chargers. The DF30AA160 is designed to deliver stable, efficient DC power, providing a rugged and dependable foundation for your power electronics architecture.
Core Technical Advantages of the DF30AA160
-
High Voltage and Current Handling
Technical Detail: Featuring a repetitive peak reverse voltage (V_RRM) of 1600V and an average forward current (I_F(AV)) of 30A, the DF30AA160 is built to manage significant power levels.
Application Value: This high voltage rating provides a crucial safety margin for equipment connected to 380V/480V industrial grids, effectively protecting the system against transient voltage spikes and line fluctuations. The 30A current rating ensures dependable operation in medium-power motor drives and power supplies without performance degradation, directly contributing to enhanced system robustness and longevity.
-
Optimized Thermal Performance and Isolation
Technical Detail: The module leverages an electrically isolated baseplate, a signature of Sanrex's industrial-grade design. This construction guarantees high dielectric strength (2500V) between the active terminals and the mounting heatsink.
Application Value: For system designers, this is a game-changer. It radically simplifies thermal management by allowing a single, common heatsink to be used for multiple isolated modules, eliminating the need for bulky and failure-prone insulating pads. This results in reduced assembly complexity, lower bill-of-materials cost, and a more compact, thermally efficient power conversion stage.
Solving Real-World Challenges Across Applications
- AC Motor Drives & VFDs: In variable frequency drives, a stable DC bus is non-negotiable for precise motor control. The Sanrex DF30AA160 provides a clean, rectified DC input, mitigating faults caused by unstable AC power and reliably handling the dynamic loads common in industrial automation.
- Uninterruptible Power Supplies (UPS): For critical online UPS systems, the rectifier operates continuously. The low forward voltage drop and excellent thermal conductivity of the DF30AA160 minimize power loss and heat generation, directly lowering operational costs and increasing the lifespan of the entire UPS unit.
- Industrial Battery Charging Systems: High-capacity chargers for forklifts, AGVs, or backup power systems demand high, sustained current. This module's 30A capability ensures rapid and consistent charging cycles, maximizing equipment uptime and operational efficiency.
- Welding Equipment: Welding power sources subject components to harsh, pulsed load conditions. The rugged mechanical and electrical construction of the DF30AA160 is designed to withstand these stresses, ensuring long-term reliability in the toughest workshop environments. If your application has different power requirements, you can Explore More IGBT Modules and power solutions.
Sanrex DF30AA160 Key Specifications
| Parameter | Value |
|---|---|
| Repetitive Peak Reverse Voltage (V_RRM) | 1600 V |
| Average Forward Current (I_F(AV)) | 30 A |
| Peak Forward Surge Current (I_FSM) | 400 A (50Hz) / 440 A (60Hz) |
| Forward Voltage Drop (V_FM) @ 10A | 1.2 V (Max) |
| Operating Junction Temperature (Tj) | -40 to +150 °C |
| Isolation Voltage (V_iso) | 2500 V (AC, 1 minute) |
For a complete list of parameters, please refer to the official DF30AA160 Datasheet.
Why Choose an Integrated Module Over Discrete Diodes?
When designing a three-phase rectifier, an engineer can choose between using six individual discrete diodes or an integrated module like the Sanrex DF30AA160. While discrete components may offer some layout flexibility, the integrated module approach delivers superior value. The DF30AA160 guarantees optimized thermal matching between diodes, reduces assembly time and complexity, and occupies a significantly smaller footprint. This integration ensures balanced current sharing and heat distribution—a state that is difficult and costly to achieve with separate components—ultimately leading to a more reliable, robust, and easier-to-manufacture final product. For assistance in selecting the right component for your specific design, please do not hesitate to Contact Us for a Quote and expert consultation.
