Taiwan Semiconductor

BAS21

BAS21 Description

The BAS21 from Taiwan Semiconductor Corporation is a high-performance switching diode designed for small-signal applications requiring fast response and low leakage. Packaged in a compact SOT-23 surface-mount form factor, it supports a maximum reverse voltage (Vr) of 250V and an average rectified current (Io) of 200mA. With a forward voltage drop (Vf) of 1.25V at 200mA, it ensures efficient power handling while minimizing losses. The diode features a reverse recovery time (trr) of 50ns, making it suitable for high-speed switching circuits. Its low capacitance (5pF @ 1V, 1MHz) further enhances performance in RF and high-frequency applications.

BAS21 Features

• High Voltage & Current Handling: 250V reverse voltage and 200mA forward current.
• Fast Switching: 50ns reverse recovery time for rapid signal processing.
• Low Leakage: Just 100nA @ 200V, ensuring minimal power loss in standby modes.
• Low Capacitance: 5pF @ 1V, 1MHz, ideal for high-frequency circuits.
• Compact & Reliable: SOT-23 package with RoHS3 compliance and REACH unaffected status.
• Wide Temperature Range: Suitable for industrial and automotive environments.

BAS21 Applications

The BAS21 excels in:

• High-Speed Switching Circuits: Such as signal demodulation and digital logic.
• Protection Circuits: Reverse polarity and transient voltage suppression.
• RF & Communication Systems: Low capacitance ensures minimal signal distortion.
• Power Management: Efficient rectification in low-power DC-DC converters.
• Automotive Electronics: Reliable performance in harsh conditions.

Conclusion of BAS21

The BAS21 stands out as a versatile, high-speed switching diode with low leakage, fast recovery, and robust voltage handling. Its SOT-23 package makes it ideal for space-constrained designs, while its compliance with RoHS3 and REACH ensures environmental safety. Whether in consumer electronics, automotive systems, or industrial controls, the BAS21 delivers reliable performance, efficiency, and durability, making it a preferred choice for engineers seeking a balance of speed, power, and compactness.