ADTA144ECAQ-7

Overview

The ADTA144ECAQ-7 is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction with built-in biasing resistors where R1 and R2 are nominally equal at 47 kOhms. The device is housed in an SOT-23 package and supports a maximum collector-emitter voltage (VCEO) of -50 V and a continuous collector current of -100 mA. It operates within a temperature range of -55°C to +150°C, dissipates up to 310 mW, and achieves a transition frequency (fT) of 250 MHz. The component is qualified to AEC-Q101 standards for automotive applications.

Feature Summary

• Epitaxial planar die construction with integrated biasing resistors
• Qualified to AEC-Q101 standards for high reliability
• Totally lead-free and fully RoHS compliant

Applications

• Automotive electronic circuits requiring AEC-Q101 qualification
• General-purpose switching applications utilizing single NPN/PNP configurations
• Driver circuits for loads such as relays, solenoids, or LEDs

Procurement Notes

Verify the specific ordering suffix when sourcing components. The '-7' suffix indicates a reel quantity of 3,000 units, while other suffixes may denote different packaging formats or quantities. Confirm that the part number includes the 'A' designation to ensure compliance with automotive-grade specifications and PPAP capability requirements defined by the manufacturer.

Selection Notes

Select this component when a PNP digital transistor with matched internal biasing resistors is required for space-constrained designs. The SOT-23 package offers a compact footprint suitable for surface-mount assembly. Ensure the application voltage does not exceed the -50 V rating and that thermal management accommodates the specified power dissipation limits under operating conditions.

Part Context

This component belongs to the ADTA series of pre-biased transistors from Diodes Incorporated. These devices integrate both the transistor and biasing resistors into a single surface-mount package, simplifying circuit design and reducing board space compared to discrete resistor-transistor combinations. The ECAQ variant specifically targets automotive markets with enhanced reliability standards.

Replacement Considerations

Direct replacements must match the PNP polarity, SOT-23 package, and electrical ratings. Verify if the substitute requires AEC-Q101 qualification for automotive use. Check for equivalent built-in resistor values and ratios to maintain identical switching characteristics without external component modifications.