ZDT694QTA

Overview

The ZDT694QTA is a dual NPN medium power high gain transistor manufactured by Diodes Incorporated. It features a collector-emitter breakdown voltage (BVCEO) of 120V and supports a continuous collector current (IC) of 0.5A. The device provides a minimum DC current transfer ratio (hFE) of 400 at 200mA, with a transitional frequency (fT) of 130MHz. It operates within a temperature range of -55°C to +150°C and has a collector power dissipation of 2.75W when both dies are active. The component is housed in an SM-8 package.

Feature Summary

• Dual NPN configuration integrated into a single SM-8 package for space-efficient circuit designs.
• High gain capability exceeding 400 at 200mA collector current.
• Qualified for automotive applications under AEC-Q101 standards with PPAP capability.
• Manufactured using halogen-free and antimony-free green molding compounds.

Applications

• Automotive electronic systems requiring specific change control protocols.
• Medium power switching circuits operating at voltages up to 120V.
• General-purpose amplification stages utilizing high DC current gain.

Procurement Notes

Verify the exact ordering suffix against official manufacturer documentation before purchase. Confirm that the SM-8 package marking matches the required specifications. Ensure compliance with RoHS directives and check for any applicable lead-free or halogen-free requirements relevant to your manufacturing process. Validate that the supplier is an authorized distributor to guarantee product authenticity.

Selection Notes

Select this component for applications requiring dual NPN transistors with high voltage ratings and significant current gain. Consider the thermal resistance characteristics and ensure adequate heat dissipation for the intended power dissipation levels. Verify that the SM-8 package dimensions fit the available PCB layout constraints. Evaluate the switching times and input capacitance if high-frequency operation is critical to the design.

Part Context

The ZDT694QTA belongs to the ZDT694 series of dual NPN transistors from Diodes Incorporated. This series is designed for medium power applications requiring high gain and robust voltage handling capabilities. The QTA suffix indicates a specific packaging variant suitable for automated assembly processes. The device is part of a broader portfolio of bipolar junction transistors offered by the manufacturer.

Replacement Considerations

Consult the manufacturer's datasheet for direct equivalent part numbers. Verify pinout compatibility and electrical parameters such as BVCEO, IC, and hFE before substitution. Ensure that any replacement component meets the same AEC-Q101 qualification requirements if used in automotive contexts.