DDTA144VUA-7-F

Overview

The DDTA144VUA-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT-323 package. It features built-in biasing resistors with nominal values of R1 = 47 kΩ and R2 = 47 kΩ. The device supports a supply voltage (VCC) of -50 V and a continuous collector current (IC) of -100 mA. Power dissipation is rated at 200 mW, with a thermal resistance (RθJA) of 625 °C/W. Operating and storage temperatures range from -55°C to +150°C. The DC current gain (Gl) has a minimum value of -33.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated unequal biasing resistors simplify circuit design
• Lead-free plating with matte tin finish over alloy 42 leadframe
• RoHS compliant and manufactured with green molding compound

Applications

• General-purpose switching applications
• Driver circuits for logic interfaces
• High-density surface mount assembly

Procurement Notes

Verify the component against the official datasheet DS30326 Rev. 7-2 to confirm authenticity. Ensure the ordering suffix matches the specified tape and reel packaging format. Check for compliance with RoHS standards and verify that the date code aligns with the green molding compound requirement if applicable.

Selection Notes

Select this component when a PNP configuration with specific 47kΩ resistor ratios is required. Consider the SOT-323 footprint for space-constrained designs. Evaluate the -50V supply voltage limit and -100mA current capacity against the application's peak load requirements.

Part Context

This part belongs to the DDTA series of pre-biased transistors from Diodes Incorporated. It is designed as a complement to NPN types within the same family. The device integrates two resistors into a single transistor package to reduce board space and simplify biasing networks.

Replacement Considerations

DDTA144WUA-7-F shares the same package and general characteristics but may have different internal resistor configurations or marking codes. Verify electrical parameters before substitution.