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BTS133BKSA1

BTS133BKSA1 Description

The BTS133BKSA1 from Infineon Technologies is a low-side N-channel power switch belonging to the HITFET® series, designed for general-purpose load switching applications. This obsolete through-hole device (TO-220-3 package) integrates a single 1:1 output capable of handling up to 7A continuous current with a low typical Rds(on) of 40mOhm, ensuring minimal conduction losses. It operates without an external supply voltage, simplifying system design, and supports load voltages up to 60V. The device is ROHS3 compliant and REACH unaffected, meeting stringent environmental standards.

BTS133BKSA1 Features

• Robust Protection: Integrated current limiting (fixed), over-temperature, and over-voltage protection enhances reliability in harsh conditions.
• High Efficiency: Low 40mOhm Rds(on) reduces power dissipation, improving thermal performance.
• Simplified Control: On/Off interface eliminates the need for complex drive circuitry.
• Wide Load Compatibility: Supports 60V max load voltage, making it suitable for automotive, industrial, and consumer applications.
• Environmental Compliance: MSL 1 (Unlimited) rating ensures long shelf life, while ROHS3 and REACH compliance aligns with global regulations.

BTS133BKSA1 Applications

• Automotive Systems: Ideal for relay replacements, lighting controls, and motor drives due to its high voltage tolerance and fault protection.
• Industrial Load Switching: Used in PLC outputs, solenoid drivers, and power distribution modules where low Rds(on) and robustness are critical.
• Consumer Electronics: Suitable for high-current switches in appliances where space and efficiency are prioritized.
• Battery Management: Protects circuits from overcurrent and overtemperature in portable devices and power tools.

Conclusion of BTS133BKSA1

The BTS133BKSA1 excels in high-current, low-side switching applications, offering a blend of efficiency, protection, and simplicity. While obsolete, its HITFET® technology and rugged design make it a legacy choice for systems requiring reliable load control without external supply dependencies. Engineers seeking alternatives should consider modern equivalents with similar Rds(on) and protection features for forward-compatible designs.