DDTC115TUA-7-F

Overview

The DDTC115TUA-7-F is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features epitaxial planar die construction and a built-in biasing resistor (R1 only) with a nominal value of 100 kΩ. The device operates within a collector-emitter voltage range up to 50 V and supports a continuous collector current of 100 mA. Power dissipation is rated at 200 mW, with an operating temperature range from -55°C to +150°C. It utilizes the SOT323 package and meets RoHS 3 compliance standards.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Built-in single biasing resistor simplifies circuit design
• Surface mount package optimized for automated assembly processes
• Halogen and antimony-free green device compliant with environmental directives

Applications

• General-purpose switching applications in consumer electronics
• Driver circuits for low-power loads requiring simplified biasing
• Automotive electronic modules requiring specific change control protocols

Procurement Notes

Verify the active status of the part number through official Diodes Incorporated channels before procurement. Confirm that the SOT323 package dimensions align with the target PCB footprint layout. Ensure that the 100 kΩ input resistor tolerance falls within the acceptable limits for the specific application requirements. Check for any automotive qualification certifications if the end-use environment demands AEC-Q100 compliance.

Selection Notes

Select this component when a compact NPN solution with integrated base resistance is required. The 100 kΩ internal resistor reduces external component count compared to discrete configurations. Consider the 200 mW power dissipation limit and thermal resistance characteristics during high-current operation. Verify that the 50 V breakdown voltage provides sufficient margin for the intended supply rails.

Part Context

This component belongs to the DDTC R1-only series, which integrates a single biasing resistor into the transistor package. The 'UA' suffix indicates the SOT323 surface mount package format. The '-7-F' designation specifies the standard reel packaging quantity and lead-free finish. This series offers a space-saving alternative to discrete resistor-transistor networks.

Replacement Considerations

Direct replacements must match the NPN polarity, 100 kΩ internal resistor value, and SOT323 package outline. Verify that substitute components maintain equivalent electrical characteristics, including VCEO, IC, and PD ratings. Ensure compatibility with existing PCB pad layouts and soldering profiles.