The TLP581 is a small outline phototransistor coupler from Toshiba Semiconductor and Storage. This device integrates a high-output infrared light-emitting diode (LED) and a high sensitivity phototransistor in a compact package. It is designed for high-density mounting applications and provides reinforced insulation for safety-critical applications.

Applications

• Programmable Logic Controllers (PLCs): Used for input/output isolation and signal transmission between different voltage domains.
• Inverter Control: Provides isolation and feedback signals for motor control applications.
• Power Supplies: Used for feedback control and isolation in switched-mode power supplies.
• Factory Automation Equipment: Enables safe and reliable data transmission in industrial environments.
• Measuring instruments: Used in sensor signal isolation.

Features

• High Isolation Voltage: Offers reinforced insulation, ensuring safety in high-voltage applications.
• Compact Package: Small outline package for high-density mounting.
• High Current Transfer Ratio (CTR): Provides efficient signal transfer with minimal power consumption.
• Low Input Current: Requires minimal input current for activation, making it compatible with low-power circuits.
• Operating Temperature: Wide operating temperature range suitable for industrial environments.
• Lead-Free Construction: Compliant with environmental regulations.

Benefits

• Enhanced Safety: Reinforced insulation provides a high level of safety in applications involving high voltages.
• Space Saving: Compact package enables dense board layouts, reducing the overall size of the equipment.
• Improved Efficiency: High CTR ensures efficient signal transfer with low power consumption.
• Reliable Performance: Robust design ensures stable and reliable operation in harsh industrial environments.
• Simplified Design: Easy to integrate into existing circuits, simplifying the design process.

Additional Details

The TLP581 is available in different package options, including surface mount and through-hole configurations. It typically operates with a forward current of around 5 mA and a collector-emitter voltage of up to 80 V. The isolation voltage is typically rated at 5000 Vrms. Its key specifications can vary based on specific sub-models, so checking the datasheet is important. This phototransistor coupler uses an infrared LED with a phototransistor output for effective signal transfer. The component is RoHS compliant.