BCR166E6393HTSA1

Overview

The BCR166E6393HTSA1 is an NPN digital transistor manufactured by Infineon Technologies, designed for switching applications in surface-mount configurations. It integrates a single NPN bipolar junction transistor with an internal base resistor network to simplify driver interface requirements. The device is housed in the SOT-323 (SC-70) package, providing a compact footprint suitable for high-density PCB layouts. Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current (IC) rating of 100 mA. The typical input resistance is specified at 4.7 kΩ, facilitating direct connection to standard logic outputs without external components.

Feature Summary

• Integrated base resistor network eliminates the need for external pull-down or biasing resistors, reducing component count and board space.
• High switching speed capability due to optimized internal resistance values, supporting efficient digital signal processing.
• Compact SOT-323 surface-mount package design enables automated assembly and integration into space-constrained electronic devices.

Applications

• General-purpose digital switching in consumer electronics and portable devices
• Level shifting and buffer stages between microcontrollers and peripheral interfaces
• Load switching for low-power LED indicators and status signals

Procurement Notes

Verify the complete ordering code including the suffix HTSA1 to ensure correct tape-and-reel packaging configuration. Confirm RoHS compliance status and lead times through authorized Infineon distributors. Cross-reference part numbers carefully as suffix variations may indicate different packaging quantities or material compositions. Request official datasheets and reliability reports prior to finalizing procurement contracts.

Selection Notes

Select this component when a compact NPN switch with integrated biasing is required for low-current digital applications. Ensure the 50 V voltage rating exceeds the maximum circuit operating voltage. Verify that the 100 mA current capacity meets the load requirements. Compare thermal performance characteristics against available alternatives if high ambient temperatures are expected in the target application environment.

Part Context

This part belongs to Infineon's BCR series of digital transistors, which are widely used in automotive and industrial control systems. The BCR166 variant specifically offers a balanced trade-off between switching speed and drive current capability. It is commonly found in infotainment systems, sensor interfaces, and general-purpose I/O expansion circuits within modern embedded architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult official cross-reference tools or contact Infineon technical support for validated equivalent components. Verify pinout compatibility and electrical parameter margins before implementing any alternative device in existing designs.