BC638,112

Single Bipolar Transistors Overview

The BC638,112 is a PNP medium power transistor manufactured by NXP USA Inc. It operates within a collector-emitter voltage of 60 V and supports a continuous DC collector current of 1 A. The device features a transition frequency of 100 MHz and a total power dissipation of 0.83 W at 25 °C ambient temperature. It utilizes a TO-92 (SOT54) plastic package with three leads arranged as base, collector, and emitter. The component is RoHS compliant and lead-free.

Single Bipolar Transistors Feature Summary

• High current capability for robust switching and amplification tasks
• Low voltage operation suitable for standard logic and signal levels
• Integrated thermal protection characteristics for reliable performance

Single Bipolar Transistors Applications

• Audio amplifiers
• Video amplifiers

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix to confirm the package variant and compliance status. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the datasheet revision date against the delivered product marking to confirm technical specifications match the intended design requirements.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring a PNP transistor with a 60 V collector-emitter breakdown voltage. It serves as the complementary pair to the BC637 NPN transistor. Consider the TO-92 package constraints for thermal management in high-current applications. Verify that the required DC current gain meets the minimum threshold for the specific load conditions.

Single Bipolar Transistors Part Context

This part belongs to the BC63x series of PNP medium power transistors produced by Philips Semiconductors, now NXP. The series includes variants with different voltage ratings: BC636 (45 V), BC638 (60 V), and BC640 (80 V). All share identical current handling capabilities and physical packaging, differing primarily in their maximum voltage limits.

Single Bipolar Transistors Replacement Considerations

Direct replacements include the BC636 and BC640, provided the circuit voltage does not exceed their respective 45 V and 80 V ratings. Other generic PNP transistors may substitute if they meet the 1 A current and 60 V voltage requirements.