2SD1782KT146Q

Single Bipolar Transistors Overview

The 2SD1782KT146Q is an NPN bipolar power transistor manufactured by ROHM Semiconductor. It features a collector-emitter voltage (VCEO) of 80V and a maximum collector current (IC) of 500mA, with a power dissipation rating of 200mW. The device offers a typical collector-emitter saturation voltage (VCE(sat)) of 0.2V at IC=500mA and IB=50mA. Its transition frequency (fT) is 120MHz, and DC current gain (hFE) ranges from 120 to 390 depending on the rank. Packaged in SOT-346 (SC-59), it supports surface mount technology.

Single Bipolar Transistors Feature Summary

• Low collector-emitter saturation voltage for efficient switching performance
• High breakdown voltage capability suitable for driver applications
• Complements the 2SB1198K PNP counterpart for push-pull configurations

Single Bipolar Transistors Applications

• Driver circuits
• General-purpose switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific hFE rank (Q or R) required for your design, as gain varies between 120-270 and 180-390. Confirm that the SOT-346 package dimensions align with your PCB footprint. Ensure operating conditions remain within the absolute maximum ratings, particularly regarding junction temperature and power derating under ambient conditions.

Single Bipolar Transistors Selection Notes

Select this component when an NPN transistor with 80V blocking capability and 500mA drive capacity is needed. It is specifically designed to pair with the 2SB1198K for complementary driver stages. Consider the low VCE(sat) characteristic if minimizing conduction losses in switching operations is a priority for the circuit design.

Single Bipolar Transistors Part Context

This part belongs to ROHM's line of surface-mount bipolar transistors designed for high reliability and energy efficiency. The 'KT146' suffix indicates the specific taping code and reel size configuration for automated assembly. It is part of a family including complementary PNP devices like the 2SB1198K.

Single Bipolar Transistors Replacement Considerations

The datasheet explicitly states that this device complements the 2SB1198K. No other direct substitute part numbers are documented in the provided source material.