BCR523E6433HTMA1

Overview

The BCR523E6433HTMA1 is an NPN silicon digital transistor manufactured by Infineon Technologies. It integrates a single NPN bipolar junction transistor with built-in bias resistors in a surface-mount SOT-23 package. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of 50 V and a maximum collector current (IC) of 500 mA. The device features a minimum DC current gain (hFE) of 70 at specified test conditions. Internal resistor values are typically R1 = 1 kΩ and R2 = 10 kΩ, resulting in a bias resistor ratio of approximately 0.1. The component supports a transition frequency (fT) of 100 MHz and has a maximum power dissipation (Ptot) of 330 mW.

Feature Summary

• Integrates NPN transistor with fixed internal bias resistors for simplified circuit design
• Provides high switching speed with a transition frequency of 100 MHz
• Offers low saturation voltage to minimize power loss during conduction
• Designed for surface-mount assembly in compact SOT-23 packages

Applications

• General-purpose switching applications in consumer electronics
• Driver circuits for small-signal loads and logic level translation
• Interface circuits between microcontrollers and peripheral devices
• Battery-powered equipment requiring efficient standby current management

Procurement Notes

Verify the specific ordering suffix E6433HTMA1 against official Infineon documentation to confirm pinout compatibility and tape-and-reel specifications. Ensure that the procurement source provides valid traceability data and confirms RoHS compliance status as per the latest manufacturer declarations. Cross-reference the part number with the most recent datasheet revision to validate any potential updates to mechanical dimensions or thermal characteristics before finalizing supply chain agreements.

Selection Notes

Select this component when a pre-biased NPN solution is required to reduce external component count and PCB area. The integrated 1 kΩ base resistor and 10 kΩ emitter resistor simplify drive calculations for standard logic families. Consider the 500 mA collector current limit and 330 mW power dissipation rating to ensure adequate thermal headroom in the intended application environment. Verify that the SOT-23 package size fits within the available footprint constraints of the design.

Part Context

This part belongs to the BCR523 series of pre-biased NPN digital transistors from Infineon. The series is designed to replace discrete resistor-transistor networks, offering improved consistency and reduced assembly time. The E6433HTMA1 suffix indicates specific packaging and handling configurations defined by the manufacturer. This component is part of Infineon's broader portfolio of discrete semiconductor solutions aimed at optimizing space and performance in modern electronic systems.

Replacement Considerations

Direct substitutes may include other BCR523 variants with different resistor ratios if electrical parameters align. Verify pinout compatibility and thermal resistance values when considering alternative manufacturers. Ensure that any replacement part meets the same voltage, current, and frequency specifications to maintain circuit integrity without redesign.