DDA143TU-7

Overview

The DDA143TU-7 is a PNP pre-biased dual transistor manufactured by Diodes Incorporated. It features epitaxial planar die construction and integrates two built-in biasing resistors within a single SOT363 package. The device operates with a collector-emitter voltage of -50V and a continuous collector current of -100mA. Power dissipation is rated at 200mW, with a junction-to-ambient thermal resistance of 625°C/W. The typical input resistor value (R1) is 4.7kΩ. The component supports an operating temperature range from -55°C to +150°C and complies with RoHS standards.

Feature Summary

• Integrates two PNP transistors with built-in biasing resistors in a compact surface-mount package
• Utilizes epitaxial planar die construction for reliable performance
• Manufactured using halogen-free and antimony-free green molding compounds

Applications

• General-purpose switching applications requiring integrated biasing
• Driver circuits for low-power loads
• Logic interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify the specific ordering suffix when sourcing components. The provided datasheet lists DDA143TU-7-F as the active orderable part number. Confirm that the received inventory matches the exact alphanumeric designation to ensure correct electrical characteristics and packaging specifications.

Selection Notes

Select this component for designs requiring dual PNP switching with fixed bias networks. Ensure the circuit design accommodates the -50V supply voltage limit and -100mA output current constraint. Verify that the 4.7kΩ internal resistor values align with the required drive currents and logic levels for the intended application.

Part Context

This component belongs to the DDA series of pre-biased dual transistors offered by Diodes Incorporated. The series provides complementary NPN types under the DDC designation. These devices are designed to reduce printed circuit board space and simplify circuit design by eliminating external biasing resistors.

Replacement Considerations

DDA143TUQ-7-F is listed as an active alternative within the same package and configuration.