DTC144TETL

Overview

The DTC144TETL is an NPN digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors in a compact SOT-416 (EMT3) surface-mount package. It operates with a collector-emitter voltage of 50 V and a continuous collector current of 100 mA. The device includes a typical input resistor (R1) of 47 kOhms and an emitter-base resistor (R2) of 22 kOhms, providing a resistance ratio of approximately 2:1. Key electrical characteristics include a minimum DC current gain (hFE) of 56 at specified conditions, a maximum operating frequency of 250 MHz, and a power dissipation rating of 150 mW. The component supports a maximum junction temperature of +150°C.

Feature Summary

• Integrates NPN bipolar junction transistor with dual bias resistors to simplify circuit design
• Utilizes small SOT-416 surface-mount package for space-constrained applications
• Provides high-speed switching capability with a maximum operating frequency of 250 MHz

Applications

• General-purpose digital switching circuits
• Interface drivers between logic gates and loads
• Level shifting applications in low-voltage systems

Procurement Notes

Verify the specific suffix 'TL' against the manufacturer's official datasheet to confirm tape-and-reel packaging specifications and quantity per reel. Ensure that the ordering code matches the exact pinout and electrical tolerances required for the target application, as variations may exist within the product family.

Selection Notes

Select this component when a single NPN digital transistor with a 50V rating and 100mA current capacity is required. The built-in 47k/22k resistor network is suitable for standard TTL or CMOS interface levels. Consider the SOT-416 footprint constraints and thermal dissipation limits of 150mW during PCB layout planning.

Part Context

This part belongs to ROHM's DTC144 series of pre-biased transistors. It shares the same internal circuit topology and electrical ratings as the DTC144WE but utilizes the EMT3/SOT-416 package instead of the larger SC-75A format. It serves as a direct replacement for legacy discrete resistor-transistor combinations in similar form factors.

Replacement Considerations

The DTC144WE is a functional equivalent within the same series but uses the SC-75A package. Verify mechanical compatibility before substitution. Other DTC144 variants with different resistor ratios or voltage ratings are not electrically interchangeable.