2SD1861TV2

Single Bipolar Transistors Overview

The ROHM 2SD1861TV2 is an NPN silicon power transistor featuring a Darlington configuration housed in a CPT3 (SC-63) through-hole package. It provides a collector current of 2A and a collector-emitter voltage rating of 40V. Key electrical parameters include a minimum DC current gain (hFE) of 1000, a transition frequency (fT) of 150 MHz, and a maximum collector power dissipation of 10W at 25°C case temperature. The device integrates a 4kΩ base-to-emitter resistor.

Single Bipolar Transistors Feature Summary

• Darlington connection structure for high DC current gain
• Integrated 4kΩ resistor between base and emitter terminals
• Designed to complement the 2SB1183 and 2SB1239 PNP transistors

Single Bipolar Transistors Applications

• Audio visual equipment
• Office automation equipment
• Communications devices
• General electronic appliances

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix TV2 corresponds to the ATV tape-and-reel packaging format with a basic unit quantity of 2500 pieces. Confirm that the component meets RoHS compliance standards as indicated in the datasheet specifications. Ensure the procurement channel sources genuine ROHM Semiconductor products to guarantee adherence to the absolute maximum ratings and electrical characteristics defined in the official documentation.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain switching or amplification stage is required without external biasing resistors. The integrated 4kΩ resistor simplifies circuit design by providing a default base-emitter discharge path. Consider the 150 MHz transition frequency for moderate-speed applications. Verify thermal management requirements, as the 10W dissipation rating assumes a 25°C case temperature; lower ratings apply for free-air operation on printed circuit boards.

Single Bipolar Transistors Part Context

This part belongs to the ROHM 2SD1759/2SD1861 series of power transistors. The 2SD1861 serves as the NPN counterpart to the 2SB1183 and 2SB1239 PNP transistors, facilitating complementary push-pull configurations. The TV2 suffix denotes a specific taping specification within the broader 2SD1861 product line, distinguishing it from other packaging variants like the TL type.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include the 2SD1759, which shares identical electrical characteristics and pinout but may differ in packaging or ordering suffixes. When replacing, ensure the alternative maintains the Darlington configuration and the integrated 4kΩ base-emitter resistor to preserve circuit functionality.