DDTA144GE-7

Overview

The DDTA144GE-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT523 package. It features an epitaxial planar die construction with a built-in shunt biasing resistor (R2) of 47 kΩ nominal value. The device supports a maximum collector-emitter voltage (VCEO) of -50 V and a continuous collector current (IC) of -100 mA. Power dissipation is rated at 150 mW with a thermal resistance (RθJA) of 833 °C/W. Electrical characteristics include a DC current transfer ratio (hFE) of 68 at IC = -5 mA and VCE = -5 V, and a gain-bandwidth product (fT) of 250 MHz. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for high reliability
• Integrated single shunt biasing resistor (R2 only)
• Qualified to AEC-Q101 automotive standards
• Totally lead-free and fully RoHS compliant

Applications

• Automotive electronics requiring AEC-Q101 qualified components
• General-purpose switching applications
• Driver circuits for LEDs and relays
• Logic level translation and interface buffering

Procurement Notes

Verify the specific ordering suffix against official documentation, as variations such as -7-F indicate tape and reel packaging quantities. Confirm compliance requirements including RoHS 3 and halogen-free status directly with the manufacturer or authorized distributors. Ensure that the selected part number matches the required marking code and reel size specifications for automated assembly processes.

Selection Notes

Select this component when a compact PNP digital transistor with a fixed 47 kΩ base shunt resistor is required. The SOT523 package offers a minimal footprint suitable for space-constrained designs. Consider the -50 V breakdown voltage and -100 mA current limits to ensure adequate headroom for the intended load. Verify compatibility with existing logic levels and input voltage requirements based on the typical curves provided in the datasheet.

Part Context

This device belongs to the DDTA (R2-ONLY SERIES) E family from Diodes Incorporated. It is part of a broader range of pre-biased transistors that integrate internal resistors to simplify circuit design and reduce board space. Complementary NPN types are available within the same series, allowing for matched pairs in push-pull configurations.

Replacement Considerations

Direct replacements must match the PNP polarity, SOT523 package, and 47 kΩ R2 value. Verify that alternative sources meet AEC-Q101 qualification if automotive use is intended. Check electrical parameters such as VCEO, IC, and hFE to ensure functional equivalence in the target application.