DTC143ZUAHE3-TP

Overview

The DTC143ZUAHE3-TP is an NPN digital transistor manufactured by Micro Commercial Components (MCC). It integrates a single NPN bipolar junction transistor with built-in thin-film bias resistors in a compact SOT-323-3 surface-mount package. The device features a typical input resistance of 4.7 kOhms and a resistor ratio of 10. Key electrical specifications include a maximum collector-emitter voltage of 50V, a continuous collector current of 100 mA, and a power dissipation rating of 200 mW. The component meets AEC-Q101 automotive qualification standards and supports operation up to a maximum temperature of +150°C.

Feature Summary

• Integrates NPN transistor with built-in thin-film bias resistors for simplified circuit design
• Provides complete isolation between resistors to allow negative input biasing
• Eliminates parasitic effects associated with external discrete components
• Automotive-grade qualification ensures reliability in demanding environments

Applications

• Inverter circuits requiring minimal external components
• Switching applications in automotive electronics systems
• Driver circuits for low-power loads
• Logic level translation interfaces

Procurement Notes

Verify the specific HE3 suffix against the manufacturer's latest datasheet to confirm lead-free compliance and RoHS status. Confirm that the SOT-323-3 package dimensions match your PCB footprint requirements. Ensure the 50V voltage rating and 100mA current capacity are sufficient for the target application's peak operating conditions before finalizing procurement.

Selection Notes

Select this component when a compact solution for NPN switching or inversion is required without external base resistors. The integrated 4.7kOhm input resistor simplifies drive calculations. Consider the 200mW power dissipation limit for thermal management. The AEC-Q101 certification makes it suitable for automotive replacements where standard commercial parts may lack the necessary environmental robustness.

Part Context

This part belongs to the DTC143ZUA series of pre-biased transistors from MCC. It serves as a drop-in replacement for similar digital transistors from other manufacturers that use the same pinout and internal resistor values. The HE3 designation typically indicates a specific manufacturing lot or material compliance variant within the broader DTC143ZUA family.

Replacement Considerations

Compatible substitutes include DTC143ZUA from Rectron and DTC143ZUAT106 from ROHM, provided the SOT-323 package and 4.7kOhm/47kOhm resistor configuration are accepted.