BCX55,135

Overview

The BCX55,135 is an NPN medium power transistor manufactured by Nexperia in a SOT89 (SC-62) surface-mounted package. It features a collector-emitter voltage of 60 V and a continuous collector current of 1 A. The device offers three DC current gain selections: BCX55 (63 to 250), BCX55-10 (63 to 160), and BCX55-16 (100 to 250). Key electrical parameters include a peak collector current of 2 A, a transition frequency of 180 MHz, and a total power dissipation capability up to 1.35 W depending on thermal conditions.

Feature Summary

• High current capability with a 1 A continuous collector rating
• Three distinct current gain selections for flexible circuit design
• Exposed heatsink die pad for enhanced thermal conductivity

Applications

• Linear voltage regulators
• Low-side switches
• MOSFET drivers
• Amplifiers

Procurement Notes

Verify the specific suffix against the datasheet ordering table to confirm the exact gain bin. Confirm the package type matches the required PCB footprint. Ensure thermal management aligns with the specified power dissipation limits under operating conditions.

Selection Notes

Select based on required current gain range and switching speed. The exposed pad requires adequate copper area for heat dissipation. Verify compatibility with the target application's voltage and current stress levels before integration.

Part Context

This component belongs to the BCX55 series of NPN medium power transistors. It serves as the complement to the BCX52 PNP series within the same package family. The series is designed for general-purpose amplification and switching tasks in compact electronic designs.

Replacement Considerations

BCX55-10, BCX55-16, BCX52, BCX52-10, BCX52-16