ADTC143ECAQ-7

Single, Pre-Biased Bipolar Transistors Overview

The ADTC143ECAQ-7 is an NPN pre-biased transistor manufactured by Diodes Incorporated, housed in a surface-mount SOT23 package. It features built-in biasing resistors with nominal values of R1 = R2 = 4.7kΩ. The device supports a maximum supply voltage (VCC) of 50V and a continuous collector current (IC) of 100mA. Electrical characteristics include a DC current gain (Gl) of at least 20, an input low voltage (Vl(off)) of 0.5V to 1.1V, and an input high voltage (Vl(on)) of 1.9V to 3.0V. Power dissipation is rated at 310mW with a thermal resistance (RθJA) of 403°C/W. The component operates within a temperature range of -55°C to +150°C and meets AEC-Q101 automotive qualification standards.

Single, Pre-Biased Bipolar Transistors Feature Summary

• Epitaxial planar die construction with integrated base and emitter biasing resistors for simplified circuit design.
• AEC-Q101 qualified and PPAP capable for use in automotive applications requiring specific change control.
• Totally lead-free and fully RoHS compliant, utilizing halogen and antimony-free green molding compound.

Single, Pre-Biased Bipolar Transistors Applications

• Automotive electronic systems requiring qualified discrete components
• General-purpose switching circuits utilizing built-in biasing
• Interface logic level translation

Single, Pre-Biased Bipolar Transistors Procurement Notes

Verify the complete part number including the ordering suffix against official manufacturer documentation before procurement. Confirm that the specified packaging quantity matches project requirements. Ensure compliance with applicable environmental directives such as RoHS 3 and REACH. Validate that the supplier source is authorized to prevent counterfeit components. Cross-reference the date code marking to confirm manufacturing timeline alignment.

Single, Pre-Biased Bipolar Transistors Selection Notes

Select this component when an NPN pre-biased transistor with equal internal resistors is required. Verify that the 50V collector-emitter breakdown voltage and 100mA current rating suit the load conditions. Check that the SOT23 package dimensions fit the PCB layout constraints. Ensure the operating temperature range covers the intended environment. Confirm that the 4.7kΩ resistor values provide appropriate drive currents for the application.

Single, Pre-Biased Bipolar Transistors Part Context

This part belongs to the ADTC series of NPN pre-biased transistors from Diodes Incorporated. It shares the same epitaxial planar construction and SOT23 form factor as other members of the family. The primary distinction lies in the specific resistor configurations and electrical tolerances defined for each model variant within the product line.

Single, Pre-Biased Bipolar Transistors Replacement Considerations

Direct replacements must match the NPN polarity, SOT23 package, and 4.7kΩ dual resistor configuration. Verify that substitute parts meet or exceed the 50V VCC rating and 100mA IC limit. Automotive applications require equivalent AEC-Q101 qualification status.

Single, Pre-Biased Bipolar Transistors FAQ

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

The ADTC143ECAQ-7 features two built-in biasing resistors, R1 and R2, both with a nominal value of 4.7kΩ.

Is this component suitable for automotive applications?

Yes, the ADTC143ECAQ is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities, making it suitable for automotive applications requiring specific change control.

What is the maximum power dissipation rating?

The maximum power dissipation (PD) is 310 mW when mounted on a minimum copper FR-4 printed circuit board at an ambient temperature of +25°C.