Overview
The IR 7641 disc thyristor SCR is a high-power semiconductor component manufactured by International Rectifier (now Infineon Technologies). Designed as a silicon-controlled rectifier (SCR) in disc form, this component is engineered for phase-control applications where precise switching of AC or DC currents is required in industrial power systems. The press-pack disc design ensures robust mechanical and thermal performance in demanding electrical equipment environments.
Key Features
- High-power disc thyristor (SCR) in industry-standard ceramic press-pack housing
- Phase-control rated for AC and DC current regulation applications
- Designed for integration into existing industrial power and control systems
- Robust construction suitable for high-current, high-voltage switching environments
- Gate-controlled switching for precise load regulation and power management
Technical Specifications
The IR 7641 operates as a gate-triggered semiconductor switch with three terminals: anode (A), cathode (K), and gate (G). As a disc-type thyristor, it features a ceramic housing optimized for press-pack mounting, which is standard in industrial rectifier and phase-control modules. The device is rated for high-current operation typical of industrial applications, with gate-triggering capability allowing precise control of conduction angle and average load voltage.
Typical Applications
- Industrial phase-control circuits for AC power regulation
- DC motor speed control and load management
- High-power rectification and converter modules
- Heat and lighting control in manufacturing equipment
- Power supply regulation in industrial machinery and systems
Compatibility & Replacements
Compatible With
- Industrial rectifier modules and thyristor stacks
- Phase-control power supply circuits
- DC motor control systems
- Industrial electrical equipment using press-pack semiconductors
- Systems requiring gate-triggered switching control
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or equipment manufacturer before ordering. The IR 7641 is a specific International Rectifier part number; ensure part number matches your application requirements exactly.
Works With
- Gate-drive circuits for SCR control
- Cooling systems with thermal interface materials and heat sinks
- Industrial electrical control systems and power panels
- Phase-control and rectifier applications requiring semiconductor switching
