DTA143ZCAT116

Overview

The DTA143ZCAT116 is a single PNP digital transistor manufactured by ROHM Semiconductor, housed in an SOT-23-3 (SST3) surface-mount package. It integrates bias resistors to simplify circuit design without external components. Key electrical parameters include a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device features a typical input resistance of 4.7 kOhms with a resistor ratio of 10. It operates up to a maximum frequency of 250 MHz and dissipates up to 200 mW of power. The DC current gain is specified at a minimum of 80 under standard test conditions.

Feature Summary

• Integrates thin-film bias resistors for direct input connection, eliminating the need for external base resistors.
• Provides complete isolation between bias resistors to support negative input biasing applications.
• Minimizes parasitic effects through integrated resistor architecture for stable switching performance.

Applications

• Inverter circuits requiring simplified input stages
• Driver circuits for logic gates and microcontrollers
• Switching applications in portable electronic devices

Procurement Notes

Verify the specific suffix CAT116 against the official datasheet to confirm the tape-and-reel packaging configuration and quantity per reel. Ensure the component meets RoHS3 compliance requirements for the target assembly process. Cross-reference the SST3 package dimensions with PCB footprint specifications prior to procurement to ensure mechanical compatibility.

Selection Notes

Select this component when a PNP digital transistor with a 4.7 kOhm input resistance is required in an SOT-23 package. The -50 V rating suits low-voltage logic interfaces. Verify that the 200 mW power dissipation aligns with thermal constraints. Consider the complementary NPN type DTC143ZCA if an NPN equivalent is needed for push-pull configurations.

Part Context

This part belongs to the ROHM DTA143 series of pre-biased transistors. These devices are designed to replace discrete BJT and resistor combinations, reducing board space and assembly costs. The series offers various resistor ratios and voltage ratings within the same footprint family to accommodate different logic levels and drive requirements.

Replacement Considerations

The DTC143ZCA is documented as the complementary NPN type within the same product family. For direct pin-compatible replacements, verify other manufacturers' PNP digital transistors with identical -50 V, -100 mA, and 4.7 kOhm input resistance specifications in an SOT-23-3 package.