Introduction
The Semikron SKKD 46/12 and SKKE 120F17 are two semiconductor modules commonly used in various electronic applications. These modules share similarities in their basic function but differ significantly in their specifications and use cases. This article aims to provide a detailed comparison and overview of these two modules, highlighting their parameters, similarities, and differences.
Semikron SKKD 46/12 Overview
The SKKD 46/12 is a thyristor module designed for high-power applications. It features:
- Maximum Ratings:
- Repetitive Peak Off-State Voltage (V_DRM): 1200V
- Non-Repetitive Peak Reverse Voltage (V_RRM): 1200V
- Average On-State Current (I_T(AV)): 46A
- Electrical Characteristics:
- Peak On-State Voltage (V_TM): 1.55V
- Gate Trigger Voltage (V_GT): 1.5V
- Gate Trigger Current (I_GT): 150mA
- Thermal and Mechanical Properties:
- Junction Operating Temperature (T_j): -40°C to +125°C
- Mounting Torque: 1.2Nm
These parameters make the SKKD 46/12 suitable for rectification, inversion, and frequency conversion in various industrial applications.
Semikron SKKE 120F17 Overview
The SKKE 120F17 is an Insulated-Gate Bipolar Transistor (IGBT) module designed for switching applications. It includes:
- Maximum Ratings:
- Collector-Emitter Voltage (V_CES): 1200V
- Gate-Emitter Voltage (V_GES): ±20V
- Continuous Collector Current (I_C): 150A
- Peak Collector Current (I_CM): 300A
- Electrical Characteristics:
- Collector-Emitter Saturation Voltage (V_CE(sat)): 2.6V
- Gate Threshold Voltage (V_GE(th)): 5V
- Thermal and Mechanical Properties:
- Junction Operating Temperature (T_j): -40°C to +150°C
- Storage Temperature: -40°C to +125°C
- Mounting Torque: 3.5Nm
The SKKE 120F17 is well-suited for applications requiring efficient power switching, such as inverters, motor drives, and power supplies.

Similarities
Both the SKKD 46/12 and SKKE 120F17 are designed by Semikron and share several commonalities:
- High Voltage Ratings: Both modules can handle up to 1200V, making them suitable for high-voltage applications.
- Industrial Applications: These modules are used in industrial settings for various high-power applications.
- Thermal Robustness: They are designed to operate over a wide range of temperatures, ensuring reliability in harsh environments.
Differences
Despite these similarities, the SKKD 46/12 and SKKE 120F17 differ in several key aspects:
- Type of Semiconductor Device:
- SKKD 46/12: Thyristor module, primarily used for controlled rectification.
- SKKE 120F17: IGBT module, mainly used for efficient power switching.
- Current Ratings:
- SKKD 46/12: Lower current ratings, with an average on-state current of 46A.
- SKKE 120F17: Higher current ratings, with a continuous collector current of 150A and peak current of 300A.
- Voltage Characteristics:
- SKKD 46/12: Features lower on-state and trigger voltages, making it suitable for different control circuits.
- SKKE 120F17: Higher saturation and threshold voltages, optimized for switching applications.
- Thermal and Mechanical Ratings:
- SKKD 46/12: Lower mounting torque and junction temperature limits.
- SKKE 120F17: Higher mounting torque and junction temperature limits, indicating robustness for more demanding applications.

Conclusion
In conclusion, the Semikron SKKD 46/12 and SKKE 120F17 serve different purposes despite their similarities. The SKKD 46/12 is ideal for controlled rectification applications with moderate current requirements, while the SKKE 120F17 excels in high-power switching applications. Understanding their specifications and differences is crucial for selecting the appropriate module for your specific needs.
For more detailed information, you can visit their respective product pages: