BCP55,135

Overview

The Nexperia BCP55,135 is an NPN medium power transistor housed in a SOT223 (SC-73) surface-mounted package. It supports a collector-emitter voltage of 60 V and a continuous collector current of 1 A. The device offers three DC current gain selections: standard (BCP55), low (BCP55-10), and high (BCP55-16). Peak collector current reaches 2 A for single pulses up to 1 ms. Total power dissipation varies from 0.65 W to 1.35 W depending on the PCB mounting pad size. Transition frequency is typically 180 MHz.

Feature Summary

• High current capability with peak ratings
• Three distinct current gain selections available
• High power dissipation capability

Applications

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

Procurement Notes

Verify the specific suffix matches the required gain bin. The base part number covers multiple gain ranges; confirm whether the -10 or -16 variant is needed. Ensure the ordering information aligns with the desired packaging format. Check the most recent datasheet revision before design finalization.

Selection Notes

Select based on required hFE range and thermal constraints. Standard BCP55 provides broad gain coverage. Use -10 for tighter upper limits or -16 for higher minimum gain. Evaluate PCB copper area to determine actual power dissipation capability relative to ambient temperature derating curves.

Part Context

This component belongs to the BCP55 series of NPN transistors. It serves as the complement to the PNP BCP52 series. The series includes variants in different packages such as SOT89 and DFN2020D-3. This specific part utilizes the SOT223 plastic surface-mounted package.

Replacement Considerations

The official NPN complement within the same series is the BCP52. Other general-purpose NPN transistors may function similarly but require verification of pinout compatibility and electrical parameters against the original design requirements.