DDA143EH-7

Overview

The DDA143EH-7 is a PNP pre-biased small signal dual surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction and integrates built-in biasing resistors within a compact SOT563 package. The device is qualified to AEC-Q101 standards for high reliability and is fully RoHS compliant, halogen-free, and antimony-free. Key electrical parameters include a maximum supply voltage of -50 V, a continuous collector current of -100 mA, and a power dissipation rating of 150 mW at +25°C. Nominal resistor values are R1 = 4.7 kΩ and R2 = 4.7 kΩ.

Feature Summary

• Epitaxial planar die construction with integrated biasing resistors
• Qualified to AEC-Q101 automotive standards for high reliability
• Totally lead-free, halogen-free, and antimony-free green device

Applications

• Automotive electronic circuits requiring high reliability
• General-purpose digital switching applications
• Interface circuits in consumer electronics

Procurement Notes

Verify the specific part number against official manufacturer documentation before procurement. Confirm that the ordering suffix matches the required packaging quantity and compliance markings. Ensure compatibility with the target application's voltage and current requirements based on the datasheet specifications.

Selection Notes

Select this component when a dual PNP configuration with fixed biasing resistors is required in a small surface-mount footprint. Consider the -50 V supply voltage limit and -100 mA output current capability during circuit design. Verify thermal resistance and power dissipation constraints for the intended operating environment.

Part Context

This component belongs to the DDA series of PNP pre-biased transistors from Diodes Incorporated. It shares the same physical package and general characteristics as other variants in the series, distinguished primarily by the nominal values of the internal base and emitter resistors.

Replacement Considerations

Complementary NPN types are available in the DDC series. Other DDA series variants with different resistor ratios may serve as functional replacements if electrical parameters align with the circuit requirements.

FAQ

What are the nominal values of the built-in resistors for the DDA143EH-7?

The nominal resistor values are R1 = 4.7 kΩ and R2 = 4.7 kΩ.

Is the DDA143EH-7 suitable for automotive applications?

Yes, the device is qualified to AEC-Q101 standards for high reliability, making it suitable for automotive electronic circuits.

What is the maximum supply voltage rating for this transistor?

The maximum supply voltage (VCC) rating is -50 V.