BC638TF

Single Bipolar Transistors Overview

The onsemi BC638TF is a PNP silicon epitaxial planar transistor housed in a TO-92 (TO-226AA) three-lead through-hole package. It features a maximum collector current of 1 A and a collector-emitter breakdown voltage of -60 V. The device has a transition frequency of 100 MHz, a DC current gain (hFE) minimum of 40 at 150 mA/2 V, and a saturation voltage of 500 mV at 50 mA/500 mA. Power dissipation is rated at 1 W with an operating temperature range from -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration for general-purpose amplification and switching
• High DC current gain optimized for low base drive requirements
• Low saturation voltage for efficient power handling
• Through-hole mounting compatible with standard PCB layouts

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Switching applications requiring moderate current control
• Complementary pairing with NPN transistors in push-pull stages

Single Bipolar Transistors Procurement Notes

Verify the suffix 'TF' against official onsemi documentation to confirm tape-and-reel packaging specifications. Ensure the component matches the BC638 series electrical parameters. Confirm RoHS compliance status and material composition declarations prior to integration into regulated designs.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with 1 A continuous current capability and 60 V voltage rating is required. The TO-92 package suits low-power through-hole designs. Verify thermal management needs for 1 W dissipation in enclosed environments.

Single Bipolar Transistors Part Context

The BC638TA belongs to the BC638 series of small-signal PNP transistors manufactured by onsemi. These devices are designed for general-purpose use in consumer electronics and industrial equipment. The TF suffix typically indicates specific packaging or reel configurations within the same electrical family.

Single Bipolar Transistors Replacement Considerations

BC638TA serves as a direct functional substitute within the same series. Other PNP transistors with matching 1 A current and 60 V voltage ratings may be considered if pinout compatibility is verified.