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The DTA143ZET1G is a PNP digital transistor featuring an integrated monolithic bias resistor network. It combines a single PNP transistor with two resistors: a series base resistor (R1) of 4.7 kΩ and a base-emitter resistor (R2) of 47 kΩ. The device supports a maximum collector current of 100 mA and a collector-emitter voltage of 50 V, with a power dissipation rating of 260 mW. Designed for surface-mount applications, it utilizes the SOT-723 package to replace discrete transistor and resistor combinations.
Verify the specific suffix ET1G against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS directives if required by the target application. Cross-reference ordering information with authorized distributors to confirm availability and lead times prior to procurement.
Select this component when a compact PNP switching solution with fixed biasing is required. The 4.7 kΩ input resistance and 47 kΩ emitter-base resistance are optimized for standard logic interface levels. Consider thermal management within the SOT-723 package limits for high-duty-cycle operations.
This part belongs to the DTA143 series of Bias Resistor Transistors (BRTs) from onsemi. The series offers various resistor ratios and polarity options (NPN/PNP) to accommodate different circuit requirements while maintaining a standardized small-outline footprint for automated assembly processes.
Direct substitutes include other PNP BRTs with identical R1=4.7kΩ and R2=47kΩ ratios in SOT-723 packages, such as the DTA143ZM3T5G or equivalent parts from other manufacturers like Leshan Radio Company, provided pinout compatibility is verified.