Infineon TT 46 N 12 KOF 12M1 | Robust Thyristor/Diode Module for High-Reliability Power Control
The Infineon TT 46 N 12 KOF 12M1 is a high-reliability thyristor and diode module engineered for demanding phase control and regulated rectifier applications. Housed in an industry-standard package, this component is not a high-frequency switch like an IGBT, but rather a workhorse for line-frequency power regulation, offering exceptional robustness and long-term operational stability. Its design prioritizes durability and consistent performance in harsh industrial environments.
- Pressure Contact Technology: Delivers superior thermal and power cycling capability by eliminating solder joints, which are common points of failure in power electronics.
- High Surge Current Capability: Built to withstand the significant inrush currents typical of motor starting and capacitive loads, ensuring system survival during transient events.
- 1200V Blocking Voltage: Provides a substantial safety margin for operation on 400V and 480V AC mains, enhancing system reliability.
- Industry-Standard Housing: Simplifies mechanical design and integration, allowing for easy mounting and direct replacement in existing systems.
Key Technical Specifications
These parameters are essential for system design and thermal management. They define the operational boundaries and performance characteristics of the TT 46 N 12 KOF 12M1 module.
| Parameter | Value |
|---|---|
| Repetitive Peak Off-State Voltage (VDRM / VRRM) | 1200 V |
| Average On-State Current (ITAVM @ TC=85°C) | 46 A |
| Surge Current (ITSM, t=10ms, Tvj=25°C) | 550 A |
| Threshold Voltage (VT0) | 0.95 V |
| Slope Resistance (rT) | 6 mΩ |
| Thermal Resistance, Junction to Case (RthJC) | 0.45 K/W per thyristor |
For complete electrical and thermal characteristics, Download the official TT 46 N 12 KOF 12M1 Datasheet.
Technical Deep Dive: Pressure Contact vs. Solder Bonds
A critical differentiator of the TT 46 N 12 KOF 12M1 is its use of Pressure Contact Technology. Unlike conventional modules that rely on soldered connections between the semiconductor die and the baseplate, this module employs a precisely calibrated clamping force to establish electrical and thermal contact. This engineering choice directly translates to superior reliability. The absence of solder layers mitigates failures caused by thermal fatigue, where repeated expansion and contraction from temperature swings can crack solder joints over time. This makes the module exceptionally suited for applications with frequent on/off cycles or fluctuating loads, ensuring a significantly longer operational lifespan. Understanding the principles of thermal performance is key to leveraging this robust design.
Application Scenarios & Engineering Value
The unique characteristics of the TT 46 N 12 KOF 12M1 make it the ideal solution for specific power conversion tasks.
- Motor Soft Starters: The module's ability to precisely phase-control the voltage applied to an AC motor allows for a smooth ramp-up of speed. This minimizes mechanical stress on gearboxes and reduces electrical stress on the grid by mitigating high inrush currents. Its high ITSM rating provides the necessary headroom to handle initial motor torque requirements reliably.
- Controlled Bridge Rectifiers: In applications like industrial battery chargers, electroplating, or DC power supplies, this module can be configured as a controlled rectifier. By adjusting the thyristor's firing angle, engineers can accurately regulate the DC output voltage and current, providing stable power under varying load conditions.
- Industrial Temperature Control: For large resistive loads such as industrial furnaces or ovens, the TT 46 N 12 KOF 12M1 offers an efficient method of power regulation. Phase control provides a continuous and precise adjustment of power delivery, leading to more stable process temperatures compared to crude on-off control, improving final product quality.
Frequently Asked Questions (FAQ)
Is the TT 46 N 12 KOF 12M1 a replacement for an IGBT module?
No, they serve fundamentally different purposes. The TT 46 N 12 KOF 12M1 is a thyristor-based module designed for low-frequency (i.e., 50/60 Hz line frequency) phase control. Its turn-off mechanism is slow, making it unsuitable for the high-frequency pulse-width modulation (PWM) required in modern inverters. For applications like Variable Frequency Drives (VFDs) or solar inverters, you should select from our range of IGBT modules, which are engineered for efficient high-speed switching.
What is the most critical factor when mounting this module?
Due to its Pressure Contact Technology, achieving the specified mounting force is paramount. An insufficient clamping force will result in high thermal and electrical resistance, leading to overheating and premature failure. Conversely, excessive force can damage the ceramic substrate. It is essential to use a calibrated torque wrench and follow the datasheet's specifications for mounting bolt torque to ensure uniform pressure across the module's base. Proper application of a quality thermal interface material is equally crucial for effective heat dissipation. If you have questions about implementing this module in your design, please contact our technical team for expert guidance.
