Infineon Technologies

BTS4142N

BTS4142N Description

The BTS4142N from Infineon Technologies is a high-side power switch belonging to the Classic PROFET series, designed for automotive and industrial applications. This AEC-Q100 qualified device integrates a 1.4A (min) output current capability with robust protection features, making it ideal for demanding environments. It operates within a 12V to 45V supply range, supporting 45V maximum input voltage, and features a low on-resistance (150mΩ typical, 200mΩ max) for efficient power handling. Packaged in a 4-pin (3+Tab) SOT-223 form factor, it offers surface-mount (SMD/SMT) compatibility with a compact footprint (6.5mm x 3.5mm x 1.6mm).

BTS4142N Features

• High Reliability: Automotive-grade (AEC-Q100) with 125°C max operating temperature and RoHS/ECCN compliance.
• Low Power Loss: 150mΩ typical on-resistance minimizes heat dissipation (1.4W max power dissipation).
• Fast Switching: 100µs max turn-on and 150µs max turn-off times for responsive load control.
• Integrated Protections: 3A current limit, overtemperature, and short-circuit protection enhance system safety.
• Wide Voltage Range: 12V–45V operating range suits 12V/24V automotive systems and industrial power rails.
• Compact Design: SOT-223 package with tab for thermal management, ideal for space-constrained PCBs.

BTS4142N Applications

• Automotive Systems: ECU power distribution, LED lighting, and motor drives in 12V/24V vehicles.
• Industrial Load Switching: Solenoid/relay control, PLCs, and power modules requiring high-side switching.
• Consumer Electronics: Smart home devices with low standby current and robust fault handling.
• Battery Management: Reverse-polarity protection and load disconnection in portable equipment.

Conclusion of BTS4142N

The BTS4142N excels in high-reliability power switching, combining low resistance, fast response, and robust protections in a compact package. Its automotive certification and wide voltage range make it a superior choice over generic switches for harsh environments. Engineers benefit from its efficiency, ease of integration, and Infineon’s PROFET reliability, ensuring optimal performance in automotive, industrial, and consumer applications.