The TLP621(BL-TP5F) is a four-channel phototransistor optocoupler manufactured by Toshiba Semiconductor and Storage. It consists of a gallium arsenide infrared emitting diode optically coupled to a silicon phototransistor. It is designed for high-density mounting applications and offers reinforced insulation. The TLP621 is commonly used for signal isolation in various electronic circuits.

Applications

• Programmable Logic Controllers (PLCs)
• Inverter circuits
• Switching power supplies
• Industrial equipment
• Telecommunication equipment

Features

• Isolation voltage: 5000 Vrms (min.)
• Collector-emitter voltage: 80 V (min.)
• Current transfer ratio: 50% (min.)
• Response time (tr, tf): 4 μs (typ.)
• Operating temperature: -55 to 110°C
• Creepage distance: 8.0 mm (min.)
• Clearance distance: 8.0 mm (min.)
• Isolation thickness: 0.4 mm (min.)
• Package: DIP-4

Benefits

• Electrical Isolation: Provides high isolation voltage, protecting sensitive circuits from high voltage surges and transients.
• High Reliability: Wide operating temperature range ensures stable performance in harsh environments.
• Compact Size: DIP-4 package allows for easy integration into various PCB designs.
• Improved Safety: Reinforced insulation provides enhanced safety for applications involving high voltage.
• Fast Switching Speed: Relatively fast response time enables efficient signal transmission.

The TLP621(BL-TP5F) optocoupler provides a reliable solution for isolating control signals from power circuits. The high isolation voltage rating makes it suitable for applications where safety is a critical concern. The current transfer ratio ensures sufficient signal strength, and the fast response time enables efficient data transmission. The device is packaged in a standard DIP-4 package, allowing for easy integration into through-hole PCB designs. Its wide operating temperature range makes it suitable for industrial applications where temperature fluctuations are common. The optocoupler is designed to meet stringent safety standards, providing a high level of protection against electrical hazards. It finds extensive use in isolating microcontrollers from high voltage circuits.