DDA144EH-7

Overview

The DDA144EH-7 is a PNP pre-biased small signal dual surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction with built-in biasing resistors, specifically R1 and R2 both nominally 47 kOhms. The device operates within a supply voltage range of -50 V and supports a maximum collector current of -100 mA. Power dissipation is rated at 150 mW with a thermal resistance of 833 °C/W. It functions reliably across an operating temperature range of -55°C to +150°C and is housed in a SOT563 package.

Feature Summary

• Epitaxial planar die construction for robust performance
• Integrated biasing resistors simplify circuit design
• Qualified to AEC-Q101 standards for high reliability applications

Applications

• Automotive electronic circuits requiring high reliability
• General-purpose switching applications utilizing dual PNP configuration
• Surface mount assembly processes compatible with standard PCB layouts

Procurement Notes

Verify the specific ordering suffix '-7' corresponds to the 3,000-unit reel packaging format as documented in the manufacturer's ordering information. Confirm that the product marking code 'P20' matches the physical component received to ensure authenticity and correct variant identification against the datasheet specifications.

Selection Notes

Select this component when a dual PNP digital transistor with 47 kOhm base and emitter resistors is required. Ensure the application voltage does not exceed the -50 V supply rating and that the thermal environment allows for 150 mW dissipation. Verify compatibility with the SOT563 footprint during the PCB layout phase.

Part Context

This part belongs to the DDA (xxxx) H series of PNP pre-biased transistors from Diodes Incorporated. It shares the same SOT563 mechanical case and general electrical characteristics as other variants in the series, distinguished primarily by the internal resistor values and specific marking codes assigned to each resistance combination.

Replacement Considerations

Direct substitutes within the same series include DDA124EH-7, DDA143EH-7, DDA114YH-7, DDA123JH-7, DDA114EH-7, DDA143TH-7, and DDA114TH-7. These alternatives share the same package and general ratings but differ in nominal resistor values.