DTA143EET1

Overview

The DTA143EET1 is a PNP Silicon Bias Resistor Transistor (BRT) from the DTA114EET1 series, manufactured by onsemi. It integrates a single transistor with a monolithic bias network consisting of two resistors: a series base resistor (R1) and a base-emitter resistor (R2). This component replaces discrete devices and external resistor networks to reduce system cost and board space. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 Vdc, a collector current (IC) of 100 mAdc, and a total device dissipation (PD) of 200 mW on an FR-4 board at minimum pads. The internal resistors are specified as R1 = 4.7 kΩ and R2 = ∞ (open), housed in an SC-75/SOT-416 package.

Feature Summary

• Integrates a PNP transistor with a monolithic bias network containing a series base resistor and a base-emitter resistor to eliminate external components.
• Designed for low power surface mount applications using the SC-75/SOT-416 package, which features modified gull-winged leads to absorb thermal stress during soldering.
• AEC-Q101 qualified and PPAP capable, suitable for automotive and other applications requiring unique site and control change requirements.

Applications

• Inverter circuits
• Interface logic
• Driver circuits

Procurement Notes

Verify the specific ordering suffix and marking code when sourcing. Confirm that the selected variant matches the required resistor values (R1=4.7k, R2=open) and package type (SC-75/SOT-416). Ensure compliance with RoHS directives if lead-free packaging is mandated for the assembly process.

Selection Notes

Select this component when a PNP digital transistor with a 4.7 kΩ base resistor and no base-emitter resistor is required. It serves as a direct replacement for discrete BJT and resistor combinations in space-constrained designs. Verify thermal performance requirements against the junction-to-ambient resistance specifications for the intended PCB pad configuration.

Part Context

This part belongs to the DTA114EET1 Series, which includes various PNP BRT configurations with different resistor ratios. The series is designed to simplify circuit design by reducing component count. The DTA143EET1 specifically offers a high input impedance configuration due to the open R2, distinguishing it from variants with parallel base-emitter resistors.

Replacement Considerations

DTA143EET1G is the lead-free version of this component within the same series. Both share identical electrical characteristics and pinouts. When substituting, ensure the Pb-free designation aligns with manufacturing environmental requirements.

FAQ

What are the internal resistor values for the DTA143EET1?

The DTA143EET1 has a series base resistor (R1) of 4.7 kΩ and an open base-emitter resistor (R2).

Is the DTA143EET1 suitable for automotive applications?

Yes, the device is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other demanding applications.

What package does the DTA143EET1 use?

It is housed in the SC-75 (also known as SOT-416) surface mount package.