BCX71K TR PBFREE

Overview

The BCX71K TR PBFREE is a PNP silicon epitaxial planar transistor manufactured by Central Semiconductor Corp. It is housed in an SOT-23 surface-mount package. The device supports a maximum collector-emitter voltage of -45 V and a collector-base voltage of -45 V, with an emitter-base voltage rating of -5 V. It handles a maximum DC collector current of 0.5 A and features a DC current gain (hFE) up to 630. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• PNP polarity configuration for general-purpose amplification and switching applications
• Epitaxial planar silicon construction ensuring stable performance characteristics
• SOT-23 surface-mount packaging optimized for automated assembly processes

Applications

• General purpose signal amplification circuits
• Low power switching applications
• Audio pre-amplifier stages

Procurement Notes

Verify the manufacturer designation as Central Semiconductor Corp against official datasheets. Confirm the specific suffix 'TR PBFREE' indicates tape-and-reel packaging and lead-free compliance. Ensure the part number matches the exact electrical specifications required for the design, particularly the -45V voltage ratings and 0.5A current limits.

Selection Notes

Select this component when a PNP transistor with moderate current handling and high voltage tolerance in a compact SOT-23 package is required. Consider the -55°C to +150°C operating range for environmental suitability. Compare hFE ranges and saturation voltages against circuit requirements to ensure adequate gain and efficiency for the intended application.

Part Context

This part belongs to the BCX71 series of small-signal bipolar junction transistors. These devices are commonly used in consumer electronics and industrial control systems where space-constrained surface-mount solutions are necessary. The series offers a balance of voltage handling and current capacity suitable for various analog and digital switching tasks.