DTC143EUAHE3-TP

Overview

The DTC143EUAHE3-TP is an NPN digital transistor manufactured by Micro Commercial Components (MCC). It integrates a single NPN bipolar junction transistor with built-in biasing resistors in a surface-mount SOT-323 package. The device features a collector-emitter voltage rating of 50V and a continuous collector current capacity of 100mA. Internal resistor values are typically 4.7 kOhms for both the base and emitter connections, establishing a standard resistance ratio of 10. The component is qualified to AEC-Q101 automotive standards and supports a maximum operating temperature of +150°C with a power dissipation limit of 200mW.

Feature Summary

• Integrates NPN transistor with dual internal biasing resistors for simplified circuit design
• Automotive-grade qualification compliant with AEC-Q101 reliability standards
• Compact SOT-323 surface-mount packaging optimized for space-constrained applications

Applications

• Automotive electronic control units requiring robust switching components
• General-purpose logic level translation circuits
• Driver stages for low-power loads in consumer electronics

Procurement Notes

Verify the specific HE3 suffix against the manufacturer's latest documentation to confirm lead-free compliance and RoHS status. Confirm that the SOT-323 package dimensions match the target PCB footprint requirements. Ensure the 50V voltage rating provides sufficient margin for the intended application environment. Validate that the 100mA current capability meets the load specifications without exceeding thermal limits.

Selection Notes

Select this component when an NPN configuration with fixed 4.7kOhm biasing resistors is required. The SOT-323 package is suitable for high-density board layouts. Consider the AEC-Q101 qualification if the application operates within automotive environments. Verify that the 200mW power dissipation rating aligns with the expected thermal conditions of the final assembly.

Part Context

This part belongs to the DTC143 series of pre-biased transistors from MCC. The HE3 designation indicates a specific manufacturing variant, likely related to environmental compliance or material composition. It serves as a direct replacement for discrete resistor-transistor networks, reducing component count and assembly time in signal switching applications.

Replacement Considerations

The DTC143EU3 is listed as a similar level replacement with the same pinout and package. Verify electrical parameter equivalence before substitution.