DTA143EMT2L

Overview

The DTA143EMT2L is a PNP digital transistor manufactured by ROHM Semiconductor, featuring built-in biasing resistors to simplify circuit design. It operates with a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device incorporates an internal resistor network with R1 and R2 both valued at 4.7 kOhms, providing a typical input resistance of 4.7 kOhms and a resistor ratio of 10. Key electrical characteristics include a minimum DC current gain (hFE) of 80 at -10 mA and -5 V, a transition frequency of 250 MHz, and a power dissipation rating of 150 mW. The component is housed in a compact SOT-723 (VMT3) surface-mount package.

Feature Summary

• Integrates dual biasing resistors (R1 and R2) to enable direct logic interface without external components.
• Optimized for high-speed switching applications with a 250 MHz transition frequency.
• Designed for low-power consumption with a 150 mW maximum power dissipation capability.

Applications

• Logic level shifting and signal inversion in digital circuits.
• Driver stages for small-signal switching loads.
• Interface circuits between microcontrollers and peripheral devices.

Procurement Notes

Verify the specific suffix 'EMT2L' against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Ensure the ordering quantity aligns with standard taping packaging requirements. Cross-reference the part number with authorized distributors to confirm current availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when a PNP digital transistor with equal biasing resistors is required for space-constrained designs. The SOT-723 package offers a smaller footprint compared to traditional SOT-23 packages. Consider the -50 V breakdown voltage and -100 mA current limits to ensure adequate headroom for the intended application load.

Part Context

This part belongs to the DTA143 series of pre-biased transistors from ROHM Semiconductor. The series provides various resistor combinations and package options to suit different circuit requirements. The DTA143EMT2L specifically utilizes the VMT3 package, which is designed for high-density surface mount assembly processes.

Replacement Considerations

Compatible substitutes within the same family include DTA143ZMT2L, which shares the VMT3 package but features different internal resistor values. Verify that any replacement maintains the required PNP polarity, voltage ratings, and thermal characteristics for the specific application.