DTC143ZUBTL

Overview

The DTC143ZUBTL is a single NPN digital transistor manufactured by ROHM Semiconductor. It integrates internal bias resistors with a typical input resistance of 4.7 kOhms and a resistor ratio of 10. The device features a maximum collector-emitter voltage (VCEO) of 50 V and supports a continuous collector current of 100 mA. Key electrical parameters include a minimum DC current gain (hFE) of 80 at 10 mA and 5 V, and a maximum operating frequency of 250 MHz. Power dissipation is rated at 200 mW, with an emitter-base voltage (VEBO) of 1.3 V and a saturation voltage of 300 mV. The component operates within a temperature range up to +150 C and is housed in the SOT-323 package.

Feature Summary

• Integrates built-in bias resistors for simplified circuit design
• Supports high-speed switching with a maximum operating frequency of 250 MHz
• Provides stable amplification with a minimum DC current gain of 80

Applications

• General-purpose signal switching
• Logic level shifting circuits
• Driver stages for low-power loads

Procurement Notes

Verify that the specific ordering suffix matches the required packaging configuration, as variations exist between tape-and-reel and cut-tape formats. Confirm RoHS compliance status through official documentation prior to integration. Ensure the selected variant aligns with the intended thermal management requirements given the 200 mW power dissipation limit. Cross-reference the datasheet for any recent updates to mechanical dimensions or electrical characteristics.

Selection Notes

Select this component when a compact NPN solution with integrated base biasing is required for space-constrained designs. The 4.7 kOhm input resistance offers a standard balance for driving from logic outputs. Consider the 50 V voltage rating for low-voltage applications. Compare against other series members if different resistor ratios or package types are needed for impedance matching or layout constraints.

Part Context

This part belongs to the DTC143 family of pre-biased transistors from ROHM Semiconductor. These devices combine a single NPN transistor with internal resistors to reduce board space and assembly steps. The family includes various packages such as SOT-323 and UMT3F, catering to different surface-mount technology needs. The DTC143ZUBTL specifically utilizes the SOT-323 form factor.

Replacement Considerations

Public confirmed substitute part numbers include DTC143XU3T106 and DTC143XU3HZGT106, which share similar specifications and recommended status.