The Toshiba TLP291(SE(T is a small outline phototransistor coupler. It consists of a gallium arsenide infrared emitting diode optically coupled to a silicon phototransistor. It is designed for applications requiring electrical isolation between input and output circuits.

Applications

• Programmable Controllers: Input/output isolation in programmable logic controllers (PLCs).
• Computer Peripherals: Isolation in computer interfaces and peripherals.
• Measuring Instruments: Signal isolation in test and measurement equipment.
• Telecommunication Equipment: Isolation in telecom systems.

Features

• Small Outline Package: Compact SO-4 package for high-density mounting.
• High Isolation Voltage: Provides high isolation voltage between input and output.
• Low Input Current: Requires low input current for operation.
• High Collector-Emitter Voltage: High collector-emitter voltage rating.
• Operating Temperature: Wide operating temperature range.

Benefits

• Electrical Isolation: Provides electrical isolation between input and output circuits, protecting sensitive components.
• Compact Design: Small size enables high-density mounting in space-constrained applications.
• High Reliability: Offers reliable performance in various environmental conditions.
• Simplified Circuit Design: Simplifies circuit design by providing a convenient isolation barrier.
• Versatile Application: Suitable for a wide range of applications requiring electrical isolation.

Additional Details

The TLP291(SE(T comes in a SO-4 package. It isRoHS compliant. The isolation voltage is typically several kilovolts. The current transfer ratio (CTR) is a key parameter that indicates the efficiency of the optical coupling. The datasheet contains detailed specifications on electrical characteristics, safety standards compliance, and application circuit examples. It's important to check the specific marking (SE(T) to ensure compatibility and understand any specific performance characteristics associated with that variant.