ZXTC6718MCQTA

Overview

The ZXTC6718MCQTA is a complementary low saturation transistor pair from Diodes Incorporated, housed in an 8-pin W-DFN3020-8 Type B package. The NPN transistor supports a continuous collector current of 4.5A with a maximum saturation voltage of 150mV at 1A and an equivalent on-resistance of 47mΩ. The PNP transistor handles -3.5A continuously, featuring a maximum saturation voltage of -220mV at -1A and an equivalent on-resistance of 64mΩ. Both devices offer breakdown voltages exceeding ±20V and are qualified to AEC-Q101 standards for automotive reliability.

Feature Summary

• Complementary NPN/PNP configuration optimized for low saturation voltage and high current gain hold-up up to 6A
• Compact 0.8mm height W-DFN3020-8 package providing a 50% smaller footprint compared to TSOP6 and SOT26
• Enhanced thermal efficiency with junction-to-ambient resistance 40% lower than standard SOT26 packages
• Automotive-grade qualification compliant with AEC-Q101 standards and PPAP capable

Applications

• DC-DC converters
• Charging circuits
• Power switches
• Motor control systems
• LED backlighting circuits

Procurement Notes

Verify the specific ordering suffix QTA confirms automotive grade status and AEC-Q101 qualification as documented in the official datasheet. Confirm the reel size is 7 inches with a tape width of 8mm and a quantity of 3,000 units per reel. Ensure the component meets RoHS compliance and halogen-free requirements specified by the manufacturer for environmental standards.

Selection Notes

Select this component when space constraints require a footprint 50% smaller than traditional SOT26 or TSOP6 packages while maintaining high current handling capabilities. Choose the NPN section for loads up to 4.5A and the PNP section for loads up to 3.5A. Consider the reduced thermal resistance for applications requiring efficient heat dissipation in thin form factors without compromising switching performance.

Part Context

This device belongs to the ZXTC6718MC family of complementary low saturation transistors designed for power management applications. It integrates both NPN and PNP structures into a single compact package to simplify circuit design. The 'QTA' suffix specifically denotes the automotive variant, which undergoes additional reliability testing and quality assurance processes required for automotive electronics manufacturing.

Replacement Considerations

Direct electrical replacements must match the W-DFN3020-8 package dimensions and pinout configuration. Verify that substitute components meet or exceed the 4.5A NPN and 3.5A PNP continuous current ratings. Ensure any alternative part maintains comparable saturation voltages and thermal resistance characteristics to preserve circuit efficiency and reliability.