DTC143EETL

Overview

The DTC143EETL is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-416 (EMT3) surface-mount package. It integrates bias resistors with a typical value of 4.7 kΩ for both R1 and R2. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 V, a continuous collector current of 100 mA, and a power dissipation rating of 150 mW. The device features a minimum DC current gain (hFE) of 30 at 10 mA and 5 V, with a transition frequency of 250 MHz. It operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates dual bias resistors (R1=R2=4.7kΩ) to simplify circuit design by eliminating external input components.
• Provides high-speed switching capability with a transition frequency of 250 MHz.
• Offers robust thermal performance with a maximum junction temperature rating of +150°C.

Applications

• Inverter circuits requiring simplified input stages.
• Interface logic level shifting between microcontrollers and peripherals.
• Driver applications for low-power loads.

Procurement Notes

Verify the specific suffix 'TL' against the manufacturer's latest datasheet to confirm tape-and-reel packaging details and RoHS compliance status. Ensure the ordering quantity aligns with the standard factory pack size of 3000 units if full reels are required. Cross-reference the component marking code on the EMT3 package to authenticate the source and prevent counterfeit substitution during procurement.

Selection Notes

Select this component when a compact NPN digital transistor with equal bias resistors is needed for space-constrained designs. The SOT-416 package offers a small footprint suitable for high-density PCB layouts. Consider the 50V voltage rating and 100mA current limit to ensure adequate headroom for the intended load. Verify that the 150mW power dissipation is sufficient for the expected operating conditions without excessive heat sinking.

Part Context

This part belongs to the DTC143 series of pre-biased transistors from ROHM Semiconductor. It serves as a direct replacement for discrete resistor-transistor combinations, reducing board space and assembly costs. The EMT3 package is a JEITA-standard small outline package designed for automated surface-mount processing.

Replacement Considerations

The DTC143EE3 is a verified alternative with identical pinout and electrical characteristics, available in the same SOT-416 package. Both parts share the same NPN polarity, 50V rating, and 4.7kΩ internal resistor configuration, ensuring functional compatibility in existing designs.