DDTC114TUA-7-F

Overview

The DDTC114TUA-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) with a nominal value of 10 kΩ. The device operates within a collector-emitter voltage range of up to 50 V and supports a continuous collector current of 100 mA. Electrical characteristics include a DC current transfer ratio (hFE) ranging from 100 to 600 at IC = 1mA, VCE = 5V, and a gain-bandwidth product (fT) of 250 MHz. Power dissipation is rated at 200 mW with a thermal resistance of 625 °C/W. The component is housed in an SOT323 package, complies with RoHS standards, and has a moisture sensitivity level of 1.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated single biasing resistor simplifies circuit design
• Surface mount package optimized for automated assembly processes
• Lead-free and fully RoHS compliant manufacturing

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic interface buffering

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packing quantity and carrier specifications. Confirm that the requested part number matches the active status listed in the latest datasheet revision. Ensure compliance with environmental directives such as RoHS 3 and REACH requirements relevant to the target market. Validate that the supplier provides traceability for the date code and marking information.

Selection Notes

Select this component when an NPN configuration with a 10 kΩ base resistor is required in a compact SOT323 footprint. Consider the 50 V collector-emitter voltage rating and 100 mA current capacity for appropriate load handling. Evaluate the thermal resistance and power dissipation limits relative to the expected ambient temperature and PCB copper area. Compare the hFE range and saturation voltage against specific switching speed and efficiency requirements.

Part Context

This part belongs to the DDTC R1-only series from Diodes Incorporated, which includes various NPN pre-biased transistors differentiated primarily by their internal base resistor values. The UA suffix indicates the SOT323 surface mount package format. The series is designed to replace discrete resistor-transistor networks, reducing board space and assembly complexity while maintaining consistent electrical characteristics across the product line.

Replacement Considerations

Direct substitutes must match the NPN polarity, 10 kΩ internal resistor, SOT323 package, and equivalent electrical ratings. Verify pinout compatibility and thermal characteristics before substitution. Consult the manufacturer's official replacement list or cross-reference guides for confirmed equivalents.