NHDTC143ZU-QX

Overview

The NHDTC143ZU-QX is an NPN Resistor-Equipped Transistor (RET) manufactured by Nexperia, designed for surface-mount applications in the SC-70 (SOT-323) plastic package. It integrates a single NPN bipolar junction transistor with built-in bias resistors to simplify circuit design and reduce component count. The device features a maximum collector-emitter voltage (VCEO) of 80 V and a continuous collector current of 100 mA. Key electrical parameters include a typical input resistance of 4.7 kOhms, a typical resistor ratio of 10, and a minimum DC current gain (hFE) of 100. The maximum power dissipation is 235 mW, with a transition frequency (fT) up to 170 MHz. It operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Integrates NPN transistor with built-in bias resistors to minimize external components
• Optimized for high-speed switching with a transition frequency up to 170 MHz
• High thermal stability supporting operation up to +150 °C junction temperature
• Compact SC-70 (SOT-323) package suitable for space-constrained designs

Applications

• Controlling IC inputs in digital logic circuits
• Cost-saving alternative to discrete BJT series in switching applications
• Switching loads in consumer electronics and industrial control systems

Procurement Notes

Verify the specific suffix 'QX' against the manufacturer's official datasheet to confirm packaging details such as reel size or tape width. Ensure that the automotive qualification status aligns with project requirements, as indicated by the 'Q' designation. Cross-reference the Mouser part number 771-NHDTC143ZU-QX with the original Nexperia documentation to validate availability and lead times through authorized distributors.

Selection Notes

Select this component when a compact NPN switching solution with integrated base biasing is required. The 80 V rating provides headroom for standard 5 V and 12 V logic systems. Compare the 4.7 kOhm base resistor value against drive source capabilities to ensure adequate base current. Consider the 235 mW power dissipation limit relative to ambient temperature and PCB copper area for thermal management.

Part Context

This part belongs to Nexperia's NHDTC143 series of resistor-equipped transistors. It serves as the NPN counterpart to PNP variants like PDTA143ZU. The SC-70 package is widely used in portable devices due to its small footprint. The 'Q' prefix typically denotes automotive-grade reliability standards, while 'X' indicates specific tape-and-reel packaging configurations defined by the manufacturer.

Replacement Considerations

Direct substitutes include other NPN RETs in SOT-323 packages with similar 80 V ratings and 100 mA current capacity, such as the NHDTC143ZU without the QX suffix if packaging differs. Verify equivalent resistor values (R1=4.7k, R2=47k) and hFE characteristics when cross-referencing with competitors like Rohm or ON Semiconductor.