The 2SD1961 is a silicon NPN epitaxial planar transistor manufactured by Rohm Semiconductor. This transistor is designed for high-current switching applications. Its key characteristics include a high collector current rating and a relatively low saturation voltage, making it suitable for efficient power control.

Applications:

• Relay and Solenoid Drivers
• Power Supply Circuits
• Motor Control Applications
• Switching Regulators
• General Purpose Switching

Features:

• High Collector Current (IC = 7A): Provides ample current handling capacity for various loads.
• Low Saturation Voltage (VCE(sat)): Minimizes power dissipation and improves efficiency.
• High Collector-Emitter Breakdown Voltage (VCEO = 100V): Ensures reliable operation in higher voltage environments.
• Fast Switching Speed: Enables efficient performance in high-frequency applications.
• TO-220 Package: Offers good thermal dissipation and easy mounting.

Benefits:

• Increased Power Efficiency: Low saturation voltage minimizes energy losses, leading to higher overall efficiency.
• Enhanced Reliability: High breakdown voltage provides a safety margin and protects against voltage spikes.
• Improved Thermal Performance: Low saturation voltage reduces heat generation, simplifying thermal management.
• Faster Switching: Enables quicker response times in switching applications.
• Simplified Design: The TO-220 package allows for easy integration into existing designs.

Additional Details:

The 2SD1961 is often used in industrial equipment, automotive systems, and power supply designs where reliable and efficient switching is essential.

Technical Specifications:

• Polarity: NPN
• Collector-Emitter Voltage (VCEO): 100V
• Collector Current (IC): 7A
• Base Current (IB): 1A
• Collector Dissipation (PC): 30W
• Operating Temperature Range: -55°C to +150°C
• Package Type: TO-220