Content last revised on February 5, 2026
FZ400R17KE3_S4: Engineering a New Benchmark for High-Voltage Industrial Drives
The FZ400R17KE3_S4 is a high-performance IGBT module engineered to deliver exceptional durability and operational efficiency in demanding high-voltage power conversion systems. With core specifications of 1700V and 400A, it leverages Infineon's proven TRENCHSTOP™ IGBT3 and Emitter Controlled diode technology. This translates to key benefits of balanced switching and conduction performance, alongside superior thermal cycling capability for extended service life. The integrated NTC thermistor enables precise temperature monitoring, directly addressing a critical requirement for robust thermal management design in modern power electronics. For high-voltage industrial drives requiring a proven balance of efficiency and durability, this 1700V IGBT module is an engineering benchmark.
Application Scenarios & Value
Achieving Robust Performance in 690V AC Industrial Motor Drives
The FZ400R17KE3_S4 is an optimal solution for high-power Variable Frequency Drives (VFD) and servo drives operating on 690V AC industrial grids. In these applications, its 1700V collector-emitter voltage rating provides the essential safety headroom to withstand DC-link voltage fluctuations and transient overvoltages, a critical factor for long-term reliability. The module's TRENCHSTOP™ IGBT3 technology is engineered for a balanced performance between conduction losses (VCE(sat)) and switching losses (Eon/Eoff). This is particularly valuable in VFDs, where the module must operate efficiently across a spectrum of switching frequencies dictated by motor speed and load. The result is minimized power dissipation, which simplifies heatsink design and allows for more compact, cost-effective system enclosures. What is the primary benefit of its robust design? Enhanced system lifetime and reduced field failures in harsh industrial environments. For systems demanding even greater current capacity within the same voltage class, the related FZ600R17KE3 offers a higher current rating.
Key Parameter Overview
Decoding the Specs for Balanced Efficiency and Thermal Stability
The technical specifications of the FZ400R17KE3_S4 are carefully tailored for high-voltage, medium-frequency applications. The typical VCE(sat) of 2.00V at nominal current ensures low conduction losses, while the optimized switching characteristics help manage thermal load during operation. An integrated NTC thermistor provides the foundation for precise thermal oversight. These parameters collectively empower engineers to design power conversion systems that are not only efficient but also exceptionally reliable.
| Parameter | Value | Conditions |
|---|---|---|
| Collector-Emitter Voltage (V_CES) | 1700V | T_vj = 25°C |
| Continuous DC Collector Current (I_C) | 400A | T_C = 80°C, T_vj max = 150°C |
| Collector-Emitter Saturation Voltage (V_CEsat) | 2.00V (typ.) | I_C = 400A, V_GE = 15V, T_vj = 25°C |
| Gate-Emitter Threshold Voltage (V_GE(th)) | 5.8V (typ.) | I_C = 16.0 mA, V_CE = V_GE, T_vj = 25°C |
| Thermal Resistance, Junction-to-Case (R_thJC) | 0.040 K/W (per IGBT) | |
| Operating Junction Temperature (T_vj op) | -40°C to +125°C |
Frequently Asked Questions (FAQ)
What is the significance of the 1700V rating for a 400A IGBT like the FZ400R17KE3_S4?
The 1700V rating provides a crucial safety margin, especially in systems connected to 690V AC lines, which can have DC-link voltages approaching 1000V. This high breakdown voltage ensures the device can reliably withstand voltage spikes and surges common in industrial environments, preventing catastrophic failures and enhancing the overall robustness of the application, such as in high-efficiency inverters.
How does the integrated NTC thermistor in the FZ400R17KE3_S4 contribute to system reliability?
The integrated NTC thermistor provides a direct, real-time measurement of the module's internal temperature. This allows the system's controller to implement precise over-temperature protection, derate power gracefully if needed, and log thermal history for predictive maintenance. This closed-loop thermal control is fundamental to preventing thermal runaway and maximizing the module's operational lifespan, a key aspect of mastering IGBT thermal management.
For engineering teams looking to leverage a proven, high-voltage IGBT solution, the FZ400R17KE3_S4 offers a direct path to designing reliable and efficient power conversion systems. To evaluate this module for your next project, please contact our technical sales team for further information and support.
