DDTC144TUA-7-F

Overview

The DDTC144TUA-7-F is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features a built-in biasing resistor (R1) with a nominal value of 47 kΩ and a tolerance of ±30%. The device utilizes epitaxial planar die construction in a SOT-323 package. Key electrical ratings include a collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a power dissipation (PD) of 200 mW at 25°C ambient temperature. The DC current transfer ratio (hFE) ranges from 100 to 600, with a typical gain-bandwidth product (fT) of 250 MHz. Operating and storage temperatures span from -55°C to +150°C.

Feature Summary

• Integrates a single built-in biasing resistor (R1 only) to simplify circuit design and reduce component count.
• Utilizes epitaxial planar die construction for reliable performance in surface mount applications.
• Compliant with RoHS directives and halogen/antimony-free standards for environmentally friendly manufacturing.

Applications

• Switching applications requiring simplified base drive circuits.
• Driver stages for low-power logic interfaces.
• General-purpose amplification in consumer electronics.

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the 3,000-unit reel packaging configuration as documented in the manufacturer's ordering information. Confirm that the 'Active' status aligns with current production schedules, as availability may fluctuate based on regional distribution channels and lead times associated with the specified carrier type.

Selection Notes

Select this component when a 47 kΩ input resistance is required for NPN switching or amplification tasks within a compact SOT-323 footprint. Ensure the application voltage does not exceed the 50 V collector-emitter rating and that thermal management accommodates the 200 mW power dissipation limit. Verify compatibility with automated assembly processes given the surface mount package style.

Part Context

This part belongs to the DDTC (R1-Only Series) UA family from Diodes Incorporated, which offers various resistor values for different biasing needs. The 'UA' suffix denotes the SOT-323 package, while the '144' identifier specifies the 47 kΩ resistor value. This series is designed for cost-effective, space-constrained designs requiring integrated biasing solutions.

Replacement Considerations

Direct functional substitutes within the same series include DDTC114TUA-7-F (10 kΩ), DDTC124TUA-7-F (22 kΩ), and DDTC115TUA-7-F (100 kΩ). For PNP equivalents, consider the DDTA144TUA-7-F. Ensure any replacement matches the SOT-323 package dimensions and electrical ratings if pinout compatibility is critical.