ADTA144VCAQ-7

Overview

The ADTA144VCAQ-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, specifically R1 at 47 kΩ and R2 at 10 kΩ. The device is housed in an SOT-23 package and supports a maximum supply voltage of -50 V and a continuous collector current of -100 mA. It operates within a temperature range of -55°C to +150°C and has a power dissipation rating of 310 mW. The component is AEC-Q101 qualified for automotive applications.

Feature Summary

• Built-in biasing resistors simplify circuit design by reducing external component count.
• AEC-Q101 qualification ensures suitability for automotive applications requiring specific change control.
• Totally lead-free and fully RoHS compliant with halogen and antimony-free green device construction.

Applications

• Automotive electronic systems requiring qualified discrete components
• General-purpose switching applications utilizing pre-biased configurations
• Digital logic interface circuits

Procurement Notes

Verify the ordering suffix matches the required packing quantity, as the -7 suffix indicates a 3,000-unit reel while other suffixes may differ. Confirm that the specific revision of the datasheet aligns with the manufacturing date code on the received units. Ensure compliance with IATF 16949 facility requirements if the application mandates automotive-grade sourcing standards.

Selection Notes

Select this component when a PNP digital transistor with a 47 kΩ base resistor and 10 kΩ emitter resistor is required. The SOT-23 package is suitable for space-constrained surface-mount designs. Consider the -50 V collector-emitter voltage rating and -100 mA current capability against the specific load requirements of the target circuit application.

Part Context

This part belongs to the ADTA series of pre-biased transistors from Diodes Incorporated. It is distinct from similar models like the DDTA144 series due to its specific automotive qualification status (AEC-Q101) and internal resistance ratios. The 'VCA' designation typically denotes the specific resistor values and package type within the manufacturer's product line.

Replacement Considerations

Direct substitutes include other AEC-Q101 qualified PNP pre-biased transistors with identical pinouts and electrical characteristics. Verify that any replacement maintains the same R1 (47 kΩ) and R2 (10 kΩ) values to ensure circuit compatibility without modification.

FAQ

What are the nominal values of the built-in biasing resistors?

The nominal base resistor (R1) is 47 kΩ and the nominal emitter resistor (R2) is 10 kΩ.

Is this component suitable for automotive applications?

Yes, the ADTA144VCAQ is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.

What is the maximum power dissipation rating?

The maximum power dissipation is 310 mW when mounted on an FR-4 PC board with the minimum recommended pad layout.