2SD821, NPN Silicon Power Transistor, TO-3 Package

The 2SD821 is a silicon NPN power transistor designed for high-voltage and high-speed switching applications. With a collector-base voltage rating of 1500V and low collector saturation voltage, it is suitable for use in color TV horizontal output applications and other high-voltage circuits. The transistor's high switching speed and robust TO-3 package contribute to efficient and reliable performance in demanding environments.

• High Breakdown Voltage: Collector-Base Voltage (V_CBO) of 1500V, suitable for high-voltage applications.
• High Switching Speed: Designed for rapid switching operations, ideal for high-frequency applications.
• Low Collector Saturation Voltage: V_CE(sat) of 5.0V (Max) at I_C = 5A, enhancing efficiency in power circuits.
• TO-3 Package: Provides efficient heat dissipation and mechanical robustness.
• High Current Capability: Suitable for applications requiring substantial current handling.
• Durable Construction: Ensures reliable performance in demanding environments.