Semikron SKB100/16 | High-Reliability Power Bridge Rectifier for Industrial Applications
The Semikron SKB100/16 is an engineered solution for robust front-end power rectification in demanding industrial environments. As a SEMIPONT® 2 Power Bridge Rectifier, this module is not just a component but the bedrock of system reliability, designed to provide a stable and resilient DC bus for high-power conversion systems. It is the first critical step in powering everything from sophisticated motor drives to essential uninterruptible power supplies.
Key Features at a Glance
- High Dielectric Strength: With a 1600V repetitive peak reverse voltage (VRRM), it offers substantial safety margin for systems operating on 400V, 480V, and even 690V AC lines.
- Robust Current Handling: A continuous DC output current of 100A (at Tc = 80°C) makes it suitable for power systems in the 30kW to 50kW range.
- Superior Thermal Performance: Built on an insulated copper baseplate, it ensures low thermal resistance, simplifying heatsink design and improving overall system longevity.
- Simplified Integration: Housed in an industry-standard package with screw terminals, the SKB100/16 is designed for straightforward mounting and secure electrical connections.
Key Technical Specifications
The following parameters highlight the SKB100/16's capability to deliver reliable performance. These specifications are crucial for engineers performing thermal analysis and system-level design.
| Parameter | Value |
|---|---|
| Repetitive Peak Reverse Voltage (VRRM) | 1600 V |
| DC Output Current (Id @ Tc=80°C) | 100 A |
| Forward Voltage per Diode (VF @ IF=100A, Tj=25°C) | typ. 1.2 V |
| Surge Forward Current (IFSM, 10ms, sin 180°) | 1050 A |
| Thermal Resistance, Junction to Case (Rth(j-c)) | ≤ 0.15 K/W |
| Isolation Voltage (Visol) | 3000 V~ |
Engineered for Critical Application Scenarios
The true value of the Semikron SKB100/16 is demonstrated in its real-world performance. It is specifically optimized for applications where uptime and robustness are non-negotiable.
- Variable Frequency Drives (VFDs): Provides the rugged front-end rectification needed to create a stable DC bus for the inverter stage. Its ability to handle line transients and its high surge current rating ensure the drive can withstand the harsh electrical environment of industrial plants.
- Uninterruptible Power Supplies (UPS): In online UPS systems, this module serves as the primary rectifier for charging batteries and supplying power to the inverter. Its proven reliability, backed by Semikron's manufacturing excellence, is critical for these mission-critical applications.
- Welding Power Supplies: The exceptionally high IFSM rating allows the module to safely manage the high inrush currents and pulsed loads characteristic of professional welding equipment, ensuring a consistent power source for quality welds.
- Battery Chargers and DC Power Supplies: For high-capacity industrial battery charging systems, the SKB100/16 offers a compact, thermally efficient solution to convert AC mains power into the high-current DC required.
Frequently Asked Questions (FAQ) for the SKB100/16
How is the SKB100/16 typically used in a three-phase system?
The SKB100/16 is a single-phase bridge rectifier. For three-phase applications, engineers commonly use two SKB100/16 modules to form a B6 full-bridge rectifier circuit. This configuration provides a cost-effective and mechanically robust solution for three-phase rectification, delivering a smooth DC output for the downstream power stages, which often feature high-power IGBT modules.
What is the engineering advantage of the isolated copper baseplate?
The primary advantage is simplified thermal design and enhanced safety. The isolated baseplate allows the module to be mounted directly onto a common, non-isolated heatsink alongside other isolated power modules. This eliminates the need for separate, bulky insulating pads, which can compromise thermal transfer. The result is lower overall system Thermal Resistance, reduced assembly complexity, and improved reliability. For a deeper dive into this topic, explore why optimizing thermal performance is key to unlocking IGBT potential.
For detailed application support or to discuss volume pricing for your project, please contact our technical team. We are ready to help you integrate the Semikron SKB100/16 into your next high-performance power system.
