BCR 158 B6327

Overview

The BCR 158 is a PNP silicon digital transistor featuring an integrated bias resistor network with R1 at 2.2 kΩ and R2 at 47 kΩ. It operates with a collector-emitter voltage of 50 V and supports a maximum collector current of 100 mA. The device offers a typical DC current gain (hFE) of 70 at IC = 5 mA and VCE = 5 V, with a saturation voltage (VCEsat) not exceeding 0.3 V under specified conditions. Transition frequency reaches 200 MHz at IC = 10 mA. Available in SOT-23 and SOT-323 packages, it complies with RoHS standards and meets AEC-Q101 qualification requirements for automotive applications.

Feature Summary

• Integrated dual-bias resistor network simplifies circuit design by eliminating external components
• Automotive-grade qualification ensures reliability in demanding environments
• Compact surface-mount packaging options facilitate high-density board layouts

Applications

• Switching circuits
• Inverter configurations
• Interface circuits
• Driver circuits

Procurement Notes

Verify the specific package variant required, either SOT-23 or SOT-323, as both are available within the BCR158 series. Confirm that the application environment adheres to the thermal resistance limits defined in the datasheet, particularly regarding junction-to-soldering point constraints. Ensure compliance with RoHS directives if environmental regulations apply to the final assembly. Cross-reference the marking code 'WIs' for the SOT-323 variant to ensure correct component identification during assembly.

Selection Notes

Select the BCR 158 when a PNP digital transistor with fixed internal biasing is required for switching or inversion tasks. The built-in resistors reduce component count and layout complexity compared to discrete transistor solutions. Consider the SOT-323 package for space-constrained designs due to its smaller footprint, while ensuring the total power dissipation remains within the 250 mW limit for that package type at elevated temperatures.

Part Context

This component belongs to Infineon's BCR158 series of PNP digital transistors. The series includes variants like the BCR158W, which differs primarily in package style. These devices are engineered for general-purpose switching and logic interface applications where simplified biasing networks are advantageous. The series maintains consistent electrical characteristics across package variations to ensure design flexibility.

Replacement Considerations

Direct substitutes must match the PNP configuration, 50 V VCEO rating, and similar internal resistor values (R1 ~2.2 kΩ, R2 ~47 kΩ). Verify pinout compatibility between SOT-23 and SOT-323 packages if swapping form factors. Check thermal performance curves to ensure adequate heat dissipation in the target application.