BC638TA

Single Bipolar Transistors Overview

The onsemi BC638TA is a PNP bipolar junction transistor (BJT) housed in a TO-92-3 through-hole package. It features a maximum collector current of 1 A and a collector-emitter voltage rating of -60 V. The device has a transition frequency of 100 MHz and a power dissipation capacity of 1 W. Key electrical parameters include a minimum DC current gain (hFE) of 40 at 150 mA, a saturation voltage of 500 mV at 500 mA, and a collector cutoff current of 100 nA. Operating temperatures range from -55°C to 150°C.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration for complementary circuit designs
• High current handling capability up to 1 A
• Robust voltage ratings with 60 V collector-emitter breakdown
• Through-hole mounting for standard PCB integration

Single Bipolar Transistors Applications

• General-purpose switching applications
• Complementary amplifier stages
• Driver circuits requiring PNP control

Single Bipolar Transistors Procurement Notes

Verify the specific suffix TA against official onsemi documentation to confirm packaging type and tape/reel specifications. Ensure the component meets RoHS3 compliance requirements as stated in manufacturer declarations. Cross-reference the DigiKey part number BC638TACT-ND or RS stock number 803-1156 for accurate sourcing details. Confirm availability status directly with authorized distributors as supply conditions may vary.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with 1 A continuous current and 60 V voltage rating is required. The TO-92 package suits through-hole assembly processes. Verify that the 100 MHz transition frequency meets the signal speed requirements of the target application. Ensure thermal management supports the 1 W power dissipation limit under operating conditions.

Single Bipolar Transistors Part Context

The BC638TA belongs to the BC638 series of general-purpose transistors manufactured by onsemi. This series includes complementary NPN and PNP variants designed for versatile electronic applications. The BC638TA specifically provides the PNP counterpart, enabling balanced design options in push-pull configurations and logic interfacing circuits within consumer and industrial electronics.

Single Bipolar Transistors Replacement Considerations

Consult official datasheets for direct pin-compatible substitutes within the same family or equivalent performance tiers. Verify that any replacement maintains identical voltage, current, and package specifications.