DTB123YCT116

Overview

The DTB123YCT116 is a single PNP digital transistor manufactured by Rohm Semiconductor, housed in an SST3 (SOT-23) surface-mount package. It integrates bias resistors to simplify circuit design. Key electrical parameters include a maximum collector-emitter voltage of 50 V and a continuous collector current of 500 mA. The device features a minimum DC current gain of 56 at 50 mA and 5 V, with a transition frequency of 200 MHz. Internal resistances are specified as R1 = 2.2 kOhms and R2 = 10 kOhms. Power dissipation is rated at 200 mW, and the saturation voltage is 300 mV at 2.5 mA base current and 50 mA collector current.

Feature Summary

• Integrates built-in bias resistors to eliminate external input components for inverter circuits
• Utilizes thin-film resistors with complete isolation to minimize parasitic effects
• Enables simplified on/off switching operation without complex biasing networks

Applications

• Inverter circuits
• Interface logic driving
• General-purpose driver applications

Procurement Notes

Verify the specific suffix CT116 against the manufacturer's datasheet to confirm packaging type and tape specifications. Ensure compatibility with SOT-23 footprint requirements during PCB layout. Cross-reference RoHS compliance status if environmental regulations apply to the target assembly process.

Selection Notes

Select this component when a PNP digital transistor with 50 V rating and 500 mA current capacity is required. The 2.2 kOhm input resistance suits standard logic levels. Consider the SST3 package size constraints. Verify thermal management needs given the 200 mW power dissipation limit in the small outline package.

Part Context

This part belongs to the DTx series of digital transistors from Rohm Semiconductor. These devices combine bipolar junction transistors with integrated bias resistors. The DTB123YCT116 specifically denotes the PNP variant with defined resistor values in the SOT-23 package format commonly used for space-efficient surface mount designs.

Replacement Considerations

Check for DTD123YC for NPN equivalent functionality. Verify pinout compatibility before substituting with other SOT-23 digital transistors. Confirm that alternative parts meet the 50 V and 500 mA specifications.