DTC143TU3T106

Overview

The DTC143TU3T106 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-323 (UMT3) surface-mount package. It integrates a bias resistor network consisting of a single base resistor (R1) with a typical value of 4.7 kOhms. Key electrical specifications include a collector-emitter breakdown voltage (VCEO) of 50 V, a continuous collector current (Ic) of 100 mA, and a maximum power dissipation (Pd) of 200 mW. The device features a transition frequency of 250 MHz and a minimum DC current gain (hFE) of 100 at 1 mA and 5 V. It operates within a temperature range up to +150°C and complies with RoHS3 standards.

Feature Summary

• Integrates a built-in bias resistor to simplify circuit design by eliminating the need for external input resistors.
• Provides high-speed switching capabilities suitable for digital logic applications.
• Offers compact surface-mount packaging for space-constrained designs.

Applications

• General-purpose digital switching circuits
• Inverter circuits requiring simplified biasing
• Interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer confirmation. Ensure the ordering suffix matches the required tape-and-reel or cut-tape format. Confirm compliance with specific environmental regulations such as RoHS3 if mandated by the end product. Cross-reference datasheet revisions to ensure parameter consistency with existing design specifications.

Selection Notes

Select this component when a single NPN digital transistor with a 4.7 kOhm base resistor is required. Compare against alternatives like DTC143XU3T106 if dual resistors are needed. Consider the SOT-323 package dimensions for PCB layout constraints. Verify that the 50 V voltage rating and 100 mA current capacity meet the load requirements of the target application.

Part Context

This part belongs to the ROHM DTC143TU3 series of pre-biased NPN transistors. It shares the same internal circuit topology and electrical characteristics as other variants in the series but differs in packaging or ordering suffixes. The series is widely used in consumer electronics and industrial control systems due to its reliability and long-term supply availability.

Replacement Considerations

Direct pin-compatible substitutes within the same family include DTC143TU3 without the trailing suffix. For dual-resistor configurations, consider DTC143XU3T106. Always verify thermal performance and package compatibility before substitution.

FAQ

What is the internal resistor configuration of the DTC143TU3T106?

It contains a single bias resistor connected to the base terminal with a typical resistance value of 4.7 kOhms.

What is the maximum power dissipation for this component?

The maximum power dissipation is specified as 200 mW.

Is this component suitable for high-frequency applications?

Yes, it has a transition frequency of 250 MHz, making it suitable for high-speed switching applications.