The TLP628-4 is a quad-channel phototransistor optocoupler manufactured by Toshiba. This device is designed to provide electrical isolation between input and output circuits, protecting sensitive components from high voltages and noise. It consists of an infrared emitting diode (IRED) and a phototransistor in each channel, allowing for signal transfer without a direct electrical connection.

Applications

• Programmable Logic Controllers (PLCs)
• Factory automation equipment
• Industrial control systems
• Office equipment
• Measuring instruments

Features

• Four-channel configuration: Provides high-density isolation in a single package.
• High isolation voltage: Ensures reliable isolation between input and output.
• Current transfer ratio (CTR): Provides efficient signal transfer.
• Compact package: Saves board space.

Benefits

• Enhanced safety by isolating high-voltage circuits from low-voltage control circuits.
• Improved noise immunity, preventing interference from affecting sensitive circuits.
• High density allows for compact system designs.
• Increased system reliability due to robust isolation.

Additional Details

The TLP628-4 is ideal for applications requiring multiple isolated channels, such as PLC input/output modules and industrial control interfaces. Its high isolation voltage ensures reliable protection against voltage transients and surges. The current transfer ratio ensures efficient signal transmission, while the compact package minimizes board space requirements. This optocoupler is suitable for both digital and analog signal isolation.

Technical Specifications (Typical):

• Isolation Voltage: 5000 Vrms
• Current Transfer Ratio (CTR): 50% to 600%
• Collector-Emitter Voltage: 80V
• Operating Temperature: -55°C to 110°C
• Package: DIP-16