2SD1858TV2Q

Single Bipolar Transistors Overview

The 2SD1858TV2Q is a medium power NPN silicon epitaxial planar transistor manufactured by ROHM. It features a collector-emitter voltage of 32V and a continuous collector current rating of 1A. The device achieves a typical low collector-emitter saturation voltage of 0.15V at specified drive conditions. It includes an hFE classification system with R (180-390) and Q (120-270) grades. The TV2 suffix indicates the component is supplied in tape and reel packaging with a basic ordering unit of 2500 pieces.

Single Bipolar Transistors Feature Summary

• Epitaxial planar NPN silicon construction for reliable switching performance
• Low collector-emitter saturation voltage to minimize power loss during conduction
• Complementary design pairing available with the 2SB1237 PNP transistor

Single Bipolar Transistors Applications

• General-purpose audio visual equipment
• Office automation systems
• Communication devices
• Electronic appliances
• Amusement devices

Single Bipolar Transistors Procurement Notes

Verify the specific hFE grade required for the application, as the standard datasheet defines R and Q classifications. Confirm that the TV2 suffix corresponds to the tape and reel packaging format necessary for automated surface mount assembly processes. Ensure the operating environment remains within the specified general-use electronic equipment scope and does not involve radiation tolerance or high-reliability safety-critical applications.

Single Bipolar Transistors Selection Notes

Select this component when a 32V NPN transistor with a 1A DC current capacity is required. Consider the complementary 2SB1237 if a matched PNP pair is needed for push-pull configurations. Evaluate the thermal dissipation requirements against the 1W limit defined for mounting on a 1.7mm thick PCB with a 1 square centimeter collector land area. Verify that the transition frequency meets the signal bandwidth needs of the target circuit.

Single Bipolar Transistors Part Context

This part belongs to ROHM's medium power transistor series designed for general consumer electronics. It utilizes an epitaxial planar structure to ensure stable electrical characteristics across the operating temperature range. The product line focuses on providing balanced performance between current handling capability and low saturation voltage for efficient switching operations.

Single Bipolar Transistors Replacement Considerations

The official documentation identifies the 2SB1237 as the complementary counterpart. No direct substitute part numbers are listed in the provided source material.