WEEN SEMICONDUCTORS BT145 Thyristor, 800V, 16A, TO-220AB

The WEEN SEMICONDUCTORS BT145 is a planar passivated Silicon Controlled Rectifier (SCR) housed in a robust SOT78 (TO-220AB) plastic package. Designed for demanding electronic applications, this thyristor excels in environments requiring high bidirectional blocking voltage, superior current inrush handling, and excellent thermal cycling performance. Its rugged construction ensures reliable operation in circuits exposed to voltage spikes and temperature fluctuations.

This component is planar passivated, a key feature that enhances voltage ruggedness and long-term reliability, making it a dependable choice for critical protection and control functions. It is engineered to manage high surge currents and maintain stable performance under continuous operational stress.

Key Applications

The BT145 thyristor is suitable for a variety of power control and protection scenarios. Its high blocking voltage and current capability make it ideal for AC power control circuits, motor control systems, and voltage regulation. It is also perfectly suited for capacitive discharge ignition (CDI) systems, crowbar protection circuits to safeguard sensitive electronics from overvoltage, and inrush current protection to prevent damage during power-up.

Technical Specifications

• Peak Repetitive Off-State Voltage (Vdrm): 800V
• Average On-State Current (It(av)): 16A
• On-State RMS Current (It(rms)): 25A
• Gate Trigger Current (Igt) Max: 35mA
• Gate Trigger Voltage (Vgt) Max: 1V
• Holding Current (Ih) Max: 60mA
• Peak Non-Repetitive Surge Current (Itsm): 330A
• Maximum Operating Temperature: 125°C
• Package / Case Style: TO-220AB (SOT78)
• Number of Pins: 3
• Mounting Type: Through Hole

With its combination of high-performance specifications and robust design, the WEEN SEMICONDUCTORS BT145 provides a solid