DTA143ECAT116

Overview

The DTA143ECAT116 is a single PNP digital transistor manufactured by ROHM Semiconductor, featuring an integrated bias resistor network within a compact SOT-23 (SST3) surface-mount package. It supports a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device includes a typical base input resistance of 4.7 kOhms and an emitter-base resistance of 4.7 kOhms, resulting in a resistor ratio of 1. 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 maximum power dissipation of 200 mW. The component operates within a temperature range up to +150°C.

Feature Summary

• Integrates bias resistors to eliminate external components for inverter circuit configurations
• Provides high-speed switching capability with a 250 MHz transition frequency
• Utilizes a compact SOT-23-3 package for efficient surface-mount assembly

Applications

• Inverter circuits requiring simplified input stages
• Driver circuits for small-signal switching applications
• General-purpose digital logic interface buffering

Procurement Notes

Verify the specific suffix CAT116 against official ROHM documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure compatibility with RoHS3 directives if required by the target application environment. Cross-reference the SST3 package dimensions with PCB footprint libraries prior to procurement to guarantee mechanical fit.

Selection Notes

Select this component when a PNP configuration with a 1:1 internal resistor ratio is required for biasing. The 4.7 kOhm input resistance suits standard logic levels. Consider the 200 mW power dissipation limit for thermal management in dense layouts. Verify that the -50 V rating meets the system's voltage requirements.

Part Context

This part belongs to the DTx series of pre-biased transistors from ROHM Semiconductor. These devices combine NPN or PNP transistors with built-in bias resistors to reduce board space and simplify design. The DTA143ECAT116 specifically represents the PNP variant with equal base and emitter resistances, distinguishing it from other ratios in the family.

Replacement Considerations

Direct substitutes may include other ROHM PNP digital transistors with identical -50V/-100mA ratings and 4.7k/4.7k resistor ratios in SOT-23 packages, such as DTA143ECA variants. Verify pinout compatibility and electrical parameters before substitution.