Infineon TD500N12KOF 5DN | Robust High-Power Phase Control Module
The Infineon TD500N12KOF 5DN is a high-performance thyristor/diode module engineered for superior reliability in demanding high-power control applications. Designed with a dual thyristor (SCR) configuration, this module provides a robust and efficient solution for phase angle control and AC switching, delivering precise power regulation in industrial systems. Its 1200V blocking voltage and 500A average current rating make it a cornerstone component for applications where operational stability and long service life are paramount.
Application Scenarios and Value Proposition
The robust design of the TD500N12KOF 5DN translates directly into tangible performance advantages across several key industrial applications.
- AC Motor Soft Starters: In soft starters, the module's ability to precisely phase-control the voltage ramp-up is critical. This managed start prevents high inrush currents that can cause mechanical shock to drivetrains and voltage sags on the power grid. The module's exceptional surge current capability (ITSM) ensures survival during unforeseen line disturbances.
- Industrial DC Drives: As the core of controlled rectifier bridges, the TD500N12KOF 5DN enables efficient and accurate speed and torque control of DC motors. Its excellent thermal performance ensures stable operation even under continuous heavy-load conditions found in manufacturing and material processing equipment.
- High-Power Rectifiers and AC Switches: For applications like industrial battery chargers, welding power supplies, and static VAR compensators, this module offers a simple yet powerful control element. Its low on-state voltage drop minimizes conduction losses, contributing to higher overall system efficiency. For engineers designing full-wave controlled rectifiers, pairing this module with a high-current diode module like the SKKD162/16 can create a highly reliable and efficient bridge topology.
Key Parameters Overview
The technical specifications of the TD500N12KOF 5DN are optimized for high-power industrial environments. For comprehensive details, download the official datasheet.
| Parameter | Value |
|---|---|
| Repetitive Peak Off-State and Reverse Voltage (VDRM, VRRM) | 1200 V |
| Average On-State Current (ITAV @ Ths=85°C) | 500 A |
| RMS On-State Current (ITRMS) | 785 A |
| Surge Current (ITSM @ 50 Hz, 10ms) | 12500 A |
| On-State Voltage (VTM @ ITM=1500A, Tj=25°C) | 1.65 V (Max) |
| Thermal Resistance, Junction to Heatsink (Rth(j-s)) | 0.065 K/W per Module |
| Isolation Voltage (VISOL) | 3000 V (RMS, 50 Hz, 1 min) |
Technical Deep Dive: Engineering for Reliability
Two core design principles elevate the TD500N12KOF 5DN's performance and longevity. First is its use of pressure contact technology. This construction method eliminates internal solder joints, which are often a primary failure point in power modules subjected to thermal cycling. The result is a dramatic improvement in power cycling capability and a significantly extended operational lifetime. Second, the module incorporates an electrically isolated baseplate using advanced ceramic materials. This simplifies system design by allowing direct mounting to a grounded heatsink without the need for additional insulating layers, which can impede heat transfer. This integrated isolation improves both the safety and the effectiveness of the overall thermal management strategy.
Industry Insight and Strategic Advantage
In an industrial landscape focused on maximizing uptime and minimizing total cost of ownership, component durability is a key strategic advantage. Legacy systems often suffer from power electronic failures that lead to costly production halts. The TD500N12KOF 5DN addresses this directly by leveraging proven, robust thyristor technology in a modern, high-reliability package. While advanced IGBT modules are essential for high-frequency switching, thyristors remain the superior choice for line-frequency power control due to their inherent ruggedness and simpler gate drive requirements. Investing in a module like the TD500N12KOF 5DN is a strategic decision to enhance the resilience of critical industrial infrastructure.
Frequently Asked Questions
What are the primary advantages of the pressure contact design in the TD500N12KOF?
The pressure contact design is inherently more reliable than soldered connections for high-power modules. It creates a robust, void-free interface that withstands the mechanical stresses induced by repeated temperature changes (thermal cycling). This leads to a longer service life and makes the module exceptionally well-suited for applications with fluctuating load profiles, such as motor drives and process controllers.
Can this module be used for line-commutated converters?
Absolutely. The TD500N12KOF 5DN is specifically designed for line-commutated applications. As a thyristor (SCR), it relies on the natural zero-crossing of the AC line voltage to turn off (commutate). This characteristic makes it the ideal component for controlled rectifiers, AC voltage controllers, and other phase-control circuits operating at 50/60 Hz line frequencies. For complex projects or further application support, please contact our technical team.
