DTA143ZET1

Overview

The DTA143ZET1 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 a series base resistor (R1 = 4.7 kΩ) and a base-emitter resistor (R2 = 47 kΩ). The device is housed in an SC-75/SOT-416 package designed for low power surface mount applications. Key electrical ratings include a collector-base voltage (VCBO) of 50 Vdc, a collector-emitter voltage (VCEO) of 50 Vdc, and a maximum collector current (IC) of 100 mAdc at 25°C ambient temperature.

Feature Summary

• Integrates a PNP transistor with a monolithic bias network to replace discrete components
• Reduces board space and component count in circuit designs
• Features modified gull-winged leads in the SC-75/SOT-416 package to absorb thermal stress during soldering
• Available in Pb-free packages

Applications

• Inverter circuits
• Interface applications
• Driver circuits

Procurement Notes

Verify the specific ordering suffix when sourcing this component. The standard part number may be available in tape and reel packaging with a unit quantity of 3,000. Confirm that the procurement source provides the correct Pb-free variant if required by the design specifications. Ensure the supplier documentation matches the ON Semiconductor publication details for accurate identification.

Selection Notes

Select the DTA143ZET1 when a PNP digital transistor with a 4.7 kΩ base resistor and a 47 kΩ emitter-base resistor is required. This specific resistor ratio distinguishes it from other members of the DTA114EET1 series. Consider the SC-75/SOT-416 package dimensions and the 50 Vdc voltage rating for compatibility with the target application's power and spatial constraints.

Part Context

This component belongs to the DTA114EET1 Series, which includes various PNP BRTs with different internal resistor configurations. The series is designed to simplify circuit design by eliminating external bias resistors. The DTA143ZET1 is one of several variants within this family, differentiated primarily by its unique R1 and R2 values compared to other models like the DTA114EET1 or DTA143EET1.

Replacement Considerations

Direct substitutes within the same series include the DTA143ZET1G, which denotes the Pb-free version of the same component. Other models in the DTA114EET1 series share the same package but have different resistor values and should only be considered if the specific resistance ratios are not critical to the circuit function.

FAQ

What are the internal resistor values for the DTA143ZET1?

The DTA143ZET1 contains a series base resistor (R1) of 4.7 kΩ and a base-emitter resistor (R2) of 47 kΩ.

What is the maximum collector current for this device?

The maximum collector current (IC) is rated at 100 mAdc at an ambient temperature of 25°C.

Is the DTA143ZET1 qualified for automotive applications?

Yes, the DTA114EET1 series, which includes the DTA143ZET1, is AEC-Q101 qualified and PPAP capable.