DDTD143TC-7-F

Overview

The DDTD143TC-7-F is an NPN pre-biased surface-mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 at 4.7kΩ and R2 at 10kΩ. The device is housed in a SOT-23 package and supports a maximum collector current of 500mA. Key electrical ratings include a supply voltage (VCC) of 50V, a collector-emitter breakdown voltage (BVCEO) of 40V, and a power dissipation capability of 250mW. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates internal biasing resistors to simplify circuit design and reduce board space.
• Utilizes epitaxial planar die construction for reliable performance.
• Compliant with RoHS standards and free from halogen and antimony.

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic level translation interfaces

Procurement Notes

Verify the specific ordering suffix and marking code against the manufacturer's official documentation before procurement. Confirm that the component status aligns with project requirements, as availability may vary. Ensure compliance with environmental directives such as RoHS and REACH relevant to your region. Cross-reference the datasheet revision date to ensure access to the most current technical specifications and mechanical dimensions.

Selection Notes

Select this component when an NPN configuration with integrated biasing is required for compact designs. Verify that the 500mA continuous current rating meets the load requirements. Check the thermal resistance characteristics if operating near maximum power dissipation limits. Consider the complementary PNP type if a matched pair is needed for push-pull configurations.

Part Context

This part belongs to the DDTD series of NPN pre-biased transistors from Diodes Incorporated. It shares the same package and general electrical characteristics as other members in the DDTD family, differentiated primarily by the internal resistor network values. The series is designed for applications requiring small form factors and simplified biasing networks.

Replacement Considerations

Check the DDTB143TC-7-F for a PNP equivalent. Verify compatibility with other DDTD series parts having similar resistor ratios. Ensure any substitute matches the SOT-23 footprint and electrical ratings.