DTC124EUAT106

The DTC124EUAT106 is an NPN pre-biased transistor from ROHM Semiconductor, featuring an integrated 22kΩ base resistor. It is designed for low-power switching and amplification applications. Key electrical characteristics include a collector-emitter breakdown voltage of 50V, a maximum collector current of 30mA, and a power dissipation of 200mW. The minimum DC current gain (hFE) is 56 at 5mA collector current and 5V collector-emitter voltage. The maximum collector-emitter saturation voltage is 300mV at 500µA base current and 10mA collector current. The transistor has a transition frequency of 250MHz, suitable for moderate-speed switching.

The device is housed in a compact surface-mount UMT3 package (SC-70, SOT-323), which is ideal for space-constrained designs. It is rated for surface mount assembly and is compatible with standard reflow soldering processes. The DTC124EUAT106 is RoHS3 compliant, though this status is unverified. It is also listed as REACH unaffected and has an MSL of 1 (unlimited).

This pre-biased transistor simplifies circuit design by eliminating the need for an external base resistor, reducing component count and board space. It is suitable for use in digital logic interfaces, LED drivers, and general-purpose switching circuits where low current operation is required.