DTD122JKT146

Overview

The DTB122JKT146 is a pre-biased PNP digital transistor manufactured by ROHM Semiconductor. It integrates an NPN epitaxial planar silicon transistor with built-in thin-film bias resistors in a compact SMT3 (SC-59) package. The device supports a maximum collector-emitter voltage of 50V and a continuous collector current of 500mA, with a power dissipation rating of 200mW at 25°C ambient temperature. The internal resistor configuration consists of R1 at 0.22kΩ and R2 at 4.7kΩ, yielding a resistance ratio of approximately 21.3. Key electrical characteristics include a minimum DC current gain of 47 and a transition frequency of 154MHz.

Feature Summary

• Built-in bias resistors enable the configuration of an inverter circuit without connecting external input resistors.
• The bias resistors consist of thin-film resistors with complete isolation to allow negative biasing of the input, and parasitic effects are almost completely eliminated.
• Only the on / off conditions need to be set for operation, making the device design easy.
• Higher mounting densities can be achieved.

Applications

• Inverter
• Interface
• Driver

Procurement Notes

Verify the specific ordering suffix 'T146' corresponds to the required tape-and-reel packaging quantity of 3000 pieces per basic ordering unit. Confirm that the component meets RoHS compliance standards and lead-free requirements as specified in the manufacturer's documentation before finalizing procurement orders.

Selection Notes

Select this component when a compact PNP digital transistor solution is required for logic inversion or switching applications. Ensure the design accommodates the 50V collector-emitter voltage limit and 500mA output current capability. Verify that the integrated resistor values align with the target input drive levels and desired switching speeds.

Part Context

This part belongs to the DTD122JK series of 500mA / 50V digital transistors with built-in resistors produced by ROHM Semiconductor. The series utilizes an NPN epitaxial planar silicon structure housed in the SMT3 surface-mount package. The T146 suffix specifically denotes the taping packaging code used for automated assembly processes.

Replacement Considerations

DTB122JK