DDTC144WUA-7-F

Overview

The DDTC144WUA-7-F is a 50V NPN pre-biased transistor manufactured by Diodes Incorporated in an SOT323 package. It integrates built-in biasing resistors with nominal values of R1 = 47 kΩ and R2 = 22 kΩ, yielding a resistance ratio of approximately 0.47. The device supports a maximum collector current (Ic) of 100 mA and features a DC current gain (hFE) minimum of 56 at Ic = 5 mA and Vce = 5 V. Electrical characteristics include a transition frequency (fT) of 250 MHz, a power dissipation rating of 200 mW, and an operating temperature range from -55°C to +150°C.

Feature Summary

• Integrates two distinct biasing resistors (R1=47kΩ, R2=22kΩ) within a single compact surface-mount package
• Utilizes epitaxial planar die construction for reliable switching performance
• Designed for automated assembly processes using standard SOT323 footprint

Applications

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

Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to confirm packaging details and compliance status. Ensure that procurement channels are authorized to guarantee component authenticity and traceability. Cross-reference the ordering information table in the datasheet to validate reel sizes and tape widths required for your assembly equipment.

Selection Notes

Select this component when a fixed resistor ratio of approximately 0.47 is required for base drive applications. Verify that the 100 mA continuous collector current and 50 V breakdown voltage meet the circuit's electrical demands. Confirm that the SOT323 package dimensions and thermal resistance characteristics fit within the available board space and thermal management constraints.

Part Context

This component belongs to the DDTC series of NPN pre-biased transistors produced by Diodes Incorporated. It shares the same internal transistor structure as other variants in the UA package family but differs specifically in its integrated resistor network configuration. The 'UA' designation indicates the SOT323 surface-mount package format.

Replacement Considerations

Direct functional substitutes within the same series include DDTC144VUA-7-F (R1=47kΩ, R2=10kΩ) and DDTC114WUA-7-F (R1=10kΩ, R2=4.7kΩ). When replacing, verify that the alternative resistor values provide the appropriate base drive current for the specific application load.