Semikron SKKT200/18E IGBT Module

SEMIKRON SKKT200/18E | Robust 1800V Thyristor/Diode Module for High-Power Control

The SEMIKRON SKKT200/18E is an industry-proven Thyristor/Diode module engineered for demanding high-power control and rectification applications. Housed in the renowned SEMIPACK® 2 package, this module combines two thyristors and two diodes in a half-bridge configuration, offering a robust, efficient, and highly reliable solution for motor drives, power supplies, and industrial process control.

• Brand: SEMIKRON
• Model: SKKT200/18E
• Core Function: High-power phase control and rectification
• Key Feature: 1800V blocking voltage and 200A average current rating
• Typical Applications: DC motor drives, soft starters, temperature controllers, AC/DC converters, uninterruptible power supplies (UPS).

Technical Deep Dive: The Foundation of Reliability

The exceptional performance of the SKKT200/18E is rooted in SEMIKRON's mature and optimized manufacturing technologies. Two core features stand out:

• Glass Passivated Thyristor Chips

  Technical Principle: The silicon thyristor junctions are protected by a hard, hermetic glass layer. This passivation technique prevents contamination and moisture ingress at the chip level, ensuring stable electrical characteristics over a long operational life.

  Application Value: For system designers, this translates directly to superior long-term reliability and reduced field failures. The stable blocking characteristics and low leakage currents of the SKKT200/18E are maintained even in harsh industrial environments with fluctuating temperatures and humidity, minimizing maintenance costs and system downtime.

• SEMIPACK® 2 Package with DBC Technology

  Technical Principle: The module utilizes a Direct Bonded Copper (DBC) substrate, where a ceramic insulator (Al₂O₃) is directly bonded to copper layers without any adhesive. This creates a path of extremely low thermal resistance from the semiconductor chips to the module's baseplate.

  Application Value: This leads to highly efficient heat dissipation, allowing the module to operate at its full current rating reliably. Engineers can design more compact thermal management systems (heatsinks), reducing overall system size and cost. Furthermore, the DBC substrate provides excellent electrical isolation (3600V~) and superior thermal cycling capability, making the SEMIKRON SKKT200/18E a durable component for systems that experience frequent on/off cycles.

Application-Specific Value Across Industries

The versatile design of the SEMIKRON SKKT200/18E delivers tangible benefits in various high-power applications:

• DC Motor Drives & Soft Starters: In controlled rectifier bridges, this module provides precise phase-angle control over the motor voltage. This enables smooth acceleration (soft start) and accurate speed regulation, reducing mechanical stress on gears and extending the lifespan of the motor and connected machinery.
• Uninterruptible Power Supplies (UPS): The SKKT200/18E is a cornerstone component for the main rectifier stage in large industrial UPS systems. Its proven robustness and high surge current capability ensure the battery charging circuit can handle line disturbances, guaranteeing the availability of clean backup power for critical loads.
• Industrial Heating and Lighting Control: For applications like large industrial furnaces or stage lighting rigs, the module's ability to handle high currents makes it perfect for phase-control dimming and temperature regulation. It offers a simple, cost-effective, and highly reliable method for modulating large amounts of AC power.

Key Technical Specifications

For a complete list of parameters, please refer to the official SKKT200/18E Datasheet.

Selection Guidance: Thyristor Module vs. IGBT Module

When choosing a power module, it's crucial to match the technology to the application. While modern IGBT modules excel in high-frequency switching applications like variable frequency drives (VFDs) and solar inverters, the SKKT200/18E holds a distinct advantage in different scenarios. It is the superior choice for line-frequency (50/60Hz) rectification and phase control applications where ruggedness, simplicity, and cost-effectiveness are the primary design drivers. Its inherent ability to withstand high surge currents and its simpler gate drive requirements make it a more robust and economical solution than an IGBT for controlled rectifier bridges.

If your design requires precise control of high-power AC/DC conversion without the complexity and higher cost of high-frequency PWM control, the SKKT200/18E remains a premier choice. For detailed application support or to discuss your specific project needs, please Contact Us for a Quote.