ZDT1048TC

Overview

The ZDT1048 is a dual NPN medium-power high-gain transistor manufactured by Diodes Incorporated. It integrates two NPN elements within an SM-8 package, designed for compact circuit solutions. The device supports a continuous collector current of 5A and offers a total power dissipation of 2.75W when both dies are active. Key electrical characteristics include a collector-emitter breakdown voltage (VCEO) ranging from 17.5V to 24V, with a maximum collector-base voltage of 50V. The saturation voltage (VCE(sat)) is specified at less than 75mV under a 1A collector current condition. Static forward current transfer ratios (hFE) reach up to 1200, ensuring high gain performance suitable for demanding switching applications.

Feature Summary

• Dual NPN configuration integrated into a single SM-8 package for space-efficient designs
• High static forward current transfer ratio (hFE) reaching up to 1200
• Low collector-emitter saturation voltage (VCE(sat)) below 75mV at 1A
• Capable of handling a continuous collector current of 5A

Applications

• CCFL inverters
• Royer circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation before procurement. Confirm that the selected variant matches the required packaging format and tape width specifications. Ensure compliance with any automotive qualification standards if the application requires AEC-Q100 or IATF 16949 certified manufacturing processes. Cross-reference the part number with the latest datasheet revision to confirm availability and design recommendations.

Selection Notes

Select this component based on its dual NPN architecture and high current handling capabilities. Evaluate the thermal resistance requirements, noting the junction-to-ambient values differ between single and dual die operation. Consider the low saturation voltage for efficiency in switching loads. Verify that the operating temperature range of -55°C to +150°C aligns with the environmental conditions of the target system.

Part Context

The ZDT1048 belongs to the ZDT series of dual transistors produced by Diodes Incorporated. These devices utilize advanced process technology to achieve high performance in a compact form factor. The SM-8 package provides a robust mechanical solution with matte tin plated leads. This series is engineered to replace discrete dual-transistor setups, reducing board space and simplifying assembly in power management and signal inversion circuits.

Replacement Considerations

Consult the manufacturer for recommended substitutes. The datasheet explicitly states that the ZDT1048 is not recommended for new designs and advises contacting the company directly for further assistance.