TN6725A_D74Z

Single Bipolar Transistors Overview

The TN6725A_D74Z is an NPN Darlington transistor manufactured by onsemi, formerly Fairchild Semiconductor. It is housed in a TO-226 package and designed for applications requiring extremely high current gain at collector currents up to 1 A. The device features a continuous collector current rating of 1.2 A, a collector-emitter voltage of 50 V, and a collector-base voltage of 60 V. Thermal characteristics include a junction-to-ambient resistance of 125 °C/W and a maximum operating junction temperature of 150 °C.

Single Bipolar Transistors Feature Summary

• Provides extremely high DC current gain suitable for driving loads at collector currents up to 1 A
• Engineered with a robust thermal profile supporting operation up to a 150 °C junction temperature
• Utilizes a three-terminal TO-226 axial leaded package for through-hole mounting

Single Bipolar Transistors Applications

• High-gain amplification circuits
• Switching applications requiring substantial drive capability
• Driver stages for relays or motors

Single Bipolar Transistors Procurement Notes

Verify the component status carefully as this part originates from Fairchild Semiconductor, which has undergone corporate restructuring into onsemi. Confirm that the specific D74Z suffix aligns with your required packaging specifications. Ensure the datasheet revision matches your design requirements, noting that legacy documentation may reflect historical manufacturing processes.

Single Bipolar Transistors Selection Notes

Select this component when a single NPN device must provide very high current gain without complex biasing networks. It serves as a direct replacement for similar Darlington types like the MPSA14. Consider the TO-226 package constraints regarding board space and thermal dissipation capabilities compared to surface-mount alternatives.

Single Bipolar Transistors Part Context

This component belongs to the discrete power and signal technologies category, specifically within the NPN Darlington transistor family. Originally produced by Fairchild Semiconductor under Process 05, it shares electrical characteristics with the MPSA14. The device is categorized as a general-purpose bipolar transistor optimized for high-current gain performance.

Single Bipolar Transistors Replacement Considerations

The MPSA14 is documented as having equivalent characteristics. Verify pinout compatibility and thermal resistance values before substitution.