BTS5020-1EKA

Updated: 2026-07-15

Overview

The BTS5020-1EKA is a smart high-side power switch from Infineon's PROFET™ family, designed for 12V/24V automotive and industrial systems. It integrates a vertical N-channel power MOSFET with advanced protection circuits and diagnostic capabilities. As an automotive-grade component, it meets stringent AEC-Q100 qualifications, ensuring reliability in harsh operating conditions. The device is commonly used in electronic control units (ECUs) for load switching applications like lighting, heating elements, and motor controls.

Structure and Working Principle

The BTS5020-1EKA combines a DMOS power transistor with CMOS control logic in a single package (TO-263-7). The output stage can handle up to 27A continuous current with very low RDS(on) resistance (~2.5mΩ typical). Internal protection includes overtemperature shutdown (with status feedback), overcurrent limitation, and load current feedback via a proportional current mirror output. The device operates with a 3.3V/5V logic interface while switching higher voltage loads (up to 40V absolute maximum).

Key Features

1. High current capability: 27A continuous current rating with short-circuit withstand capacity. 2. Advanced diagnostics: Current mirror output (1:3750 ratio) for precise load monitoring and fault detection. 3. Robust protection: Integrated overtemperature shutdown with auto-restart and overcurrent limitation. Low power dissipation is achieved through the extremely low RDS(on), reducing the need for complex cooling solutions. The device also features reverse battery protection (-40V) and electrostatic discharge (ESD) protection up to 4kV.

Application Areas

Primary applications include automotive body electronics: - Headlight and interior lighting control - Seat and mirror heating systems - Power distribution modules - Window lift and sunroof controls Industrial uses encompass: - PLC output modules - Power supply distribution - Actuator controls in factory automation Its diagnostic capabilities make it particularly valuable for systems requiring predictive maintenance features.

Maintenance and Precautions

While the BTS5020-1EKA requires minimal maintenance, proper PCB layout is critical for optimal performance. Ensure: 1. Adequate copper area for heat dissipation (minimum 6cm²) 2. Proper decoupling capacitors near the device 3. Thermal vias when using multilayer boards Avoid operation beyond absolute maximum ratings, especially concerning voltage (40V max) and junction temperature (150°C max). For repetitive short-circuit conditions, derate current handling capacity accordingly.

B2B Procurement Guide

When procuring BTS5020-1EKA in bulk: 1. Verify authenticity through authorized distributors (Infineon's APN program) 2. Consider lead times (typically 8-12 weeks for large quantities) 3. Request qualification data for automotive applications Pricing varies by volume, with tiered discounts available for orders above 1,000 units. Alternative packaging options (tape & reel) may be available for automated assembly processes. Always check for the latest revision (marked by 'G' suffix in full part number).