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DTA143EUAT106 is a PNP digital transistor with built-in resistors manufactured by ROHM Semiconductor. It features a UMT3 (SOT-323) package with three terminals. Key electrical parameters include a collector-emitter voltage of -50 V, a collector current of -0.1 A, and a power dissipation of 0.2 W. The device incorporates an input resistance (R1) of 4.7 kΩ and an emitter-base resistance (R2) of 4.7 kΩ. The DC current gain (hFE) ranges from 30 to higher values. The component is supplied in taping format with a unit quantity of 3000.
Verify the supply status carefully as this specific part number may be designated as not recommended for new designs. Confirm availability through authorized distributors or direct manufacturer channels. Ensure that the ordering suffix matches the required packaging type. Cross-reference with replacement models like DTA143EU3 if new design support is required.
Select this component for low-voltage PNP switching applications requiring integrated biasing. Verify that the -50 V collector-emitter voltage and -0.1 A current ratings meet the circuit requirements. Consider the UMT3 package size constraints. Check if the 4.7 kΩ resistor ratio suits the drive conditions. Evaluate alternative packages if higher thermal performance is needed.
The DTA143EUA series belongs to ROHM's line of pre-biased transistors designed to simplify digital switching circuits. These devices combine a PNP bipolar transistor with internal bias resistors in a compact surface-mount package. The series is intended to reduce board space and component count compared to discrete resistor-transistor combinations.
DTA143EU3 and DTA143EU3HZG are confirmed replacements with the same pinout and package.