BCX42E6327HTSA1

Overview

BCX42E6327HTSA1 is a PNP single pre-biased bipolar junction transistor (BJT) manufactured by Infineon Technologies. It is housed in a PG-SOT23 surface-mount package, equivalent to SOT-23-3. The device features a maximum collector-emitter breakdown voltage of 125 V and a continuous collector current rating of 800 mA. Key electrical characteristics include a DC current gain (hFE) minimum of 40 at 200 mA and 1 V, and a saturation voltage of 900 mV at 30 mA base and 300 mA collector currents. The component supports a transition frequency of 150 MHz and operates within a junction temperature range up to 150°C.

Feature Summary

• Integrated pre-biasing circuitry simplifies drive requirements for switching applications.
• High voltage tolerance of 125 V enables use in higher potential circuits.
• Robust current handling capability of 800 mA supports moderate power loads.
• Compact SOT-23 packaging facilitates space-constrained printed circuit board designs.

Applications

• General-purpose switching circuits
• Driver stages for relays or small motors
• Logic interface buffers
• Amplifier output stages

Procurement Notes

Verify the specific suffix HTSA1 against official Infineon documentation to confirm tape-and-reel packaging specifications. Confirm RoHS compliance status through the manufacturer's latest environmental declaration. Cross-reference the full part number with authorized distributors to ensure authenticity and traceability. Check for any recent lifecycle notices regarding obsolescence or last-time buy dates before finalizing procurement plans.

Selection Notes

Select this component when a PNP transistor with integrated bias resistors is required for efficient switching. Ensure the application voltage does not exceed the 125 V collector-emitter rating. Verify that the load current remains within the 800 mA limit while accounting for thermal dissipation constraints in the SOT-23 package. Consider the 150 MHz transition frequency for high-speed digital control signals.

Part Context

The BCX42 belongs to Infineon's family of pre-biased transistors designed to replace discrete resistor-transistor networks. These components reduce board space and assembly costs by integrating internal biasing resistors. The BCX42 specifically targets applications requiring PNP switching with high voltage ratings, offering a compact alternative to traditional discrete solutions in consumer and industrial electronics.

Replacement Considerations

Consult official Infineon substitution guides for verified equivalents. Generic replacements may differ in hFE ranges, saturation voltages, or thermal characteristics. Validate any substitute part against the original datasheet parameters to ensure circuit compatibility and reliability.