BTS142DNT

Power Distribution Switches, Load Drivers Overview

The BTS142DNT is a single-channel, low-side smart power switch from Infineon’s Classic HITFET™ family. It integrates an N-channel vertical power FET in Smart SIPMOS technology with embedded protection functions. Key electrical parameters include a maximum drain-source voltage (VDS) of 42 V and a nominal load current (IL(nom)) of 4.6 A. The device features a maximum on-state resistance (RDS(on)) of 68 mΩ at Tj = 150°C and 27 mΩ at Tj = 25°C. It supports a short-circuit current limit of 30 A and offers high avalanche energy capability of 3500 mJ. Operating temperatures range from -40 °C to +150 °C.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates N-channel vertical power FET in Smart SIPMOS technology for efficient switching.
• Provides comprehensive embedded protection against overload, short circuit, overtemperature, and reverse polarity.
• Features latch-off protection strategy that requires a reset cycle to restore operation after fault conditions.

Power Distribution Switches, Load Drivers Applications

• Automotive lighting systems
• Solenoid and relay driver circuits
• Motor control applications

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix 'NT' against the official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with automotive qualification standards if used in safety-critical systems. Confirm RoHS compliance status as indicated in the latest documentation before finalizing procurement orders.

Power Distribution Switches, Load Drivers Selection Notes

Select this component for applications requiring robust low-side switching with integrated diagnostic capabilities. The 42 V rating suits standard automotive electrical systems. Consider the thermal performance and RDS(on) values for heat dissipation requirements. Verify interface compatibility with microcontroller logic levels for gate driving.

Power Distribution Switches, Load Drivers Part Context

This part belongs to Infineon’s Classic HITFET™ family, designed for automotive low-side power distribution. It replaces older discrete solutions by integrating control and protection logic directly with the power stage. The device is intended for use in harsh environments typical of automotive under-hood and chassis applications.

Power Distribution Switches, Load Drivers Replacement Considerations

Check for direct pin-compatible alternatives within the same HITFET™ family or newer generations such as the XHPFET series. Ensure substitute parts meet the same 42 V and 4.6 A ratings. Verify that protection features and package dimensions are identical to avoid PCB redesign.

Power Distribution Switches, Load Drivers FAQ

What is the protection strategy of the BTS142DNT?

The device employs a latch-off protection strategy. Upon detection of a fault such as overtemperature or short circuit, the output switches off and remains latched until a reset cycle is performed.

Is the BTS142DNT suitable for automotive applications?

Yes, it is part of the Classic HITFET™ family and is qualified for automotive use, operating within the specified temperature range of -40 °C to +150 °C.