DTC143TCAT116

Overview

The DTC143TCAT116 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-23-3 (SST3) surface-mount package. It integrates a bias resistor network to simplify circuit design. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 V and a continuous collector current (IC) of 100 mA. The device features a typical base input resistance (R1) of 4.7 kOhms and a DC current gain (hFE) minimum of 100 at 1 mA and 5 V. Power dissipation is rated at 200 mW, with a maximum operating temperature of +150°C and a transition frequency of 250 MHz.

Feature Summary

• Integrates built-in bias resistors to eliminate the need for external input components, enabling straightforward inverter circuit configuration.
• Provides simplified operation where only on/off conditions require setting, reducing overall circuit complexity.
• Designed for surface-mount technology applications with high thermal stability up to 150°C.

Applications

• Inverter circuits
• Interface driving
• General-purpose switching

Procurement Notes

Verify the specific ordering suffix T116 to confirm the reel packaging format and quantity. Confirm RoHS compliance status through official datasheets or manufacturer declarations before integration. Ensure the selected component matches the required SST3 package dimensions for PCB layout compatibility.

Selection Notes

Select this component when a single NPN pre-biased transistor is required for low-power switching applications. Compare power dissipation ratings against thermal constraints, as the SOT-23-3 package limits heat removal. Verify that the 4.7 kOhm internal base resistance aligns with the drive source capabilities and desired switching speed requirements.

Part Context

This part belongs to the DTx series of digital transistors from ROHM Semiconductor. It serves as a standard-grade discrete solution for replacing multiple discrete components. Complementary PNP types are available within the same family, such as the DTA143TCA, for push-pull configurations.

Replacement Considerations

Direct pin-compatible alternatives within the same package may include other variants in the DTC143TCA series, provided they meet the 50V/100mA specifications. Verify equivalent hFE and R1 values to ensure circuit performance parity.