DTC123YETL

Overview

The DTC123YETL is an NPN digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors to simplify circuit design. It operates with a supply voltage of 50 V and supports a collector current of 100 mA. The device incorporates an input resistance (R1) of 2.2 kΩ and an emitter-base resistance (R2) of 10 kΩ. Key electrical characteristics include a minimum DC current gain (hFE) of 33 at 10 mA and 5 V, a transition frequency of 250 MHz, and a maximum power dissipation of 150 mW. It is housed in the EMT3 (SOT-416) surface-mount package.

Feature Summary

• Integrates bias resistors to enable inverter configuration without external components
• Provides high-speed switching capability with a 250 MHz transition frequency
• Offers low saturation voltage for efficient signal processing

Applications

• General-purpose logic level shifting and inversion
• Driver circuits for small-signal loads
• Interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify the specific ordering suffix to confirm the tape-and-reel packaging format. Ensure compatibility with the EMT3 footprint during PCB layout. Confirm RoHS compliance status through official manufacturer documentation before integration into regulated products.

Selection Notes

Select this component when a compact NPN solution with integrated biasing is required. Compare R1 and R2 values against other models if different input thresholds are needed. Verify that the 150 mW power dissipation rating meets thermal requirements for the intended application environment.

Part Context

This part belongs to the DTC123 series of pre-biased transistors from ROHM. It serves as a surface-mount alternative to discrete resistor-transistor networks, reducing board space and assembly complexity. The EMT3 package provides a small form factor suitable for dense consumer electronics designs.

Replacement Considerations

DTC123YE is a compatible standard product variant within the same series. Both parts share identical electrical specifications and pinout configurations, allowing for direct substitution in existing designs where availability permits.