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BTS133

BTS133 Description

The BTS133 from Infineon Technologies is a low-side power switch designed for general-purpose load driving applications. Part of the HITFET® series, this obsolete but robust device integrates a single N-channel MOSFET with a 1:1 input-to-output ratio, capable of handling up to 7A of continuous current. It operates with a maximum load voltage of 60V and features an impressively low Rds(On) of 40mΩ (typical), ensuring efficient power delivery with minimal losses. The through-hole TO-220-3 package facilitates easy mounting in industrial and automotive systems.

BTS133 Features

• High Current Handling: Supports 7A output current, ideal for demanding loads.
• Low On-Resistance: 40mΩ Rds(On) minimizes conduction losses, improving thermal performance.
• Integrated Protection: Includes fixed current limiting, over-temperature shutdown, and over-voltage protection, enhancing reliability.
• Simple Interface: On/Off control for straightforward integration into existing designs.
• Wide Voltage Range: Compatible with 60V max load voltage, suitable for 12V/24V automotive and industrial systems.
• Robust Packaging: TO-220-3 through-hole ensures mechanical durability and heat dissipation.

BTS133 Applications

The BTS133 excels in low-side switching scenarios, particularly in:

• Automotive Systems: Driving relays, solenoids, or lamps in 12V/24V vehicle networks.
• Industrial Controls: Powering actuators, motors, or high-current DC loads.
• Power Distribution: Serving as a solid-state relay replacement in fault-protected circuits.
• Consumer Electronics: Managing high-current peripherals in appliances or power tools.

Conclusion of BTS133

Though marked obsolete, the BTS133 remains a reliable choice for engineers needing a high-efficiency, protected low-side switch. Its low Rds(On), robust fault protection, and TO-220 packaging make it suitable for legacy designs or replacements in automotive, industrial, and high-power applications. For modern alternatives, Infineon’s newer HITFET® or PROFET™ series may offer advanced features, but the BTS133’s simplicity and performance ensure continued relevance in specific use cases.