DTB543EMT2L

Overview

The DTB543EMT2L 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 -12 V and a continuous collector current of -0.5 A. The device includes an input resistance (R1) ranging from 1 kΩ to 4.7 kΩ and an emitter-base resistance (R2) between 1 kΩ and 4.7 kΩ. Key electrical parameters include a minimum DC current gain (hFE) of 115 at -100 mA and -2 V, a maximum power dissipation of 0.15 W, and a transition frequency of 260 MHz. It is housed in the SOT-723 (VMT3) surface-mount package.

Feature Summary

• Integrates internal biasing resistors to eliminate external components for inverter configurations.
• Provides high current handling capability suitable for driving loads up to 0.5 A.
• Features a compact SOT-723 surface-mount package for space-constrained applications.

Applications

• Inverter circuits requiring simplified resistor networks
• Driver circuits for relays and solenoids
• Logic level translation interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Ensure storage conditions adhere to specified temperature ranges to maintain reliability. Validate package markings against official datasheet specifications before integration into production lines.

Selection Notes

Select this component for designs requiring a single PNP digital transistor with moderate current drive capabilities. The integrated resistor values allow for straightforward interface with standard logic families. Consider the thermal dissipation limits when designing for high-duty cycle operations within the specified operating temperature range.

Part Context

This part belongs to the DTB543 series of digital transistors from ROHM Semiconductor. It serves as a pre-biased solution replacing discrete transistor-resistor combinations. The EMT2L suffix indicates the specific tape-and-reel packaging format compatible with automated surface-mount assembly processes.

Replacement Considerations

Check for functional equivalents within the same series that may offer updated packaging or revised electrical characteristics. Verify pin compatibility and thermal performance when substituting with similar PNP digital transistors from other manufacturers.