The TLP781(YH is a general-purpose, small-outline photocoupler from Toshiba Semiconductor and Storage, designed for applications requiring electrical isolation between input and output circuits. This device consists of a gallium arsenide (GaAs) infrared emitting diode optically coupled to a silicon phototransistor. The TLP781 offers a compact design and reliable performance for various isolation needs in industrial and consumer electronics.

Applications

• Programmable Logic Controllers (PLCs): Provides isolation between the CPU and I/O modules.
• Microcomputer Interfaces: Used for isolating microcontrollers from external devices.
• Switch Mode Power Supplies (SMPS): Offers feedback isolation in SMPS circuits.
• General Purpose Isolation: Suitable for various applications requiring electrical isolation.
• Office Automation Equipment: Employed in printers, copiers, and other office equipment for signal isolation.

Features

• High Isolation Voltage: Provides electrical isolation between input and output.
• Compact SO Package: Small Outline package for space-saving designs.
• High Collector-Emitter Voltage: Provides capability for higher voltage applications.
• CTR (Current Transfer Ratio): Specified current transfer ratio ensures consistent performance.
• Pb-Free: RoHS compliant, ensuring environmental friendliness.

Benefits

• Enhanced System Reliability: Electrical isolation prevents ground loops and reduces noise.
• Improved Safety: Protects users and equipment from high voltages through isolation.
• Simplified Design: Reduces the need for complex level-shifting circuits.
• Space-Saving Design: Compact SO package allows for efficient board layout.
• Cost-Effective Solution: Offers a cost-effective solution for electrical isolation.

Additional Details

The TLP781(YH features a specified current transfer ratio (CTR) depending on the rank. It operates with a low input current and provides a stable output. The device is available in a surface-mount SO package. It complies with industry safety standards, providing basic insulation. The isolation voltage is rated to withstand high-voltage transients, making it suitable for various applications. The operating temperature range is suitable for typical industrial and consumer environments.