DTA143EKA-TP

Overview

The DTA143EKA-TP is a pre-biased PNP digital transistor manufactured by Micro Commercial Components (MCC). It integrates a single bipolar junction transistor with internal biasing resistors in an SOT-23-3L surface-mount package. Key electrical specifications include a maximum collector-emitter voltage of 50 V, a continuous collector current of 100 mA, and a transition frequency of 250 MHz. The device features a minimum DC current gain (hFE) of 30 at 10 mA and 5 V, with a maximum saturation voltage of 300 mV under specified conditions. Internal resistors are configured as R1 = 4.7 kOhms and R2 = 4.7 kOhms. Maximum power dissipation is rated at 200 mW.

Feature Summary

• Integrates a PNP transistor with dual biasing resistors to simplify circuit design and reduce component count.
• Provides high-speed switching capabilities suitable for applications requiring a transition frequency up to 250 MHz.
• Offers low saturation voltage characteristics to minimize power loss during conduction states.

Applications

• General-purpose switching circuits in consumer electronics.
• Driver stages for relays, solenoids, or small motors.
• Logic level translation and buffer interfaces between microcontrollers and peripheral devices.

Procurement Notes

Verify the obsolete status of this specific part number before initiating procurement processes. The manufacturer has indicated that production has ceased, and availability is limited to existing stock or surplus channels. Confirm compatibility with alternative equivalents such as the DTA143ECA-TP if supply chain continuity is required for long-term projects.

Selection Notes

Select this component only if the SOT-23-3L footprint and specific resistor ratio (4.7k/4.7k) align with the design requirements. Due to its discontinued status, engineers should evaluate pin-compatible alternatives from the same manufacturer or other vendors to ensure future maintainability and supply stability.

Part Context

This component belongs to the DTA143 series of pre-biased transistors from Micro Commercial Components. It serves as a simplified switching solution compared to discrete BJT configurations. The EKA suffix denotes the specific packaging and resistor configuration within the broader DTA143 family, which includes various resistance values and package types.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include DTA143ECA-TP and DTA143ECAT116. Other potential replacements listed in distributor databases are DTA143EKAT146 from Rohm Semiconductor. Verify electrical parameters and pinout compatibility before substitution.