The TLP228G is a small outline photorelay from Toshiba Semiconductor and Storage. It integrates a GaAs infrared emitting diode (IRED) and a phototransistor in a 4-pin SO4 package. This photorelay is designed for applications requiring electrical isolation between the control circuit and the load circuit.

Applications

• Factory Automation: Used in programmable logic controllers (PLCs) and other automated systems for switching signals and controlling actuators.
• Measurement Equipment: Incorporated into test and measurement devices for signal isolation and switching.
• Telecommunications: Found in telecommunication equipment for signal routing and isolation.
• Security Systems: Used in security systems for isolating control signals and switching power to various components.
• Office Automation: Employed in office equipment such as copiers and printers for control and isolation purposes.

Features

• Small Outline Package: SO4 package saves board space.
• High Isolation Voltage: Offers high electrical isolation between input and output.
• Low On-Resistance: Provides low resistance when the relay is in the on state, minimizing voltage drop and power dissipation.
• High Switching Speed: Enables fast switching of signals.
• AC/DC Operation: Capable of switching both AC and DC signals.

Benefits

• Space Saving: The small SO4 package allows for high-density mounting, saving valuable board space.
• Electrical Isolation: Provides a high level of electrical isolation, protecting control circuits from high voltage surges and noise.
• Reliable Switching: Offers reliable and consistent switching performance, ensuring long-term operation.
• Reduced Power Consumption: Low on-resistance minimizes power dissipation, improving energy efficiency.
• Versatile Applications: Suitable for a wide range of applications due to its AC/DC operation and high switching speed.

The TLP228G's key specifications include a high isolation voltage (typically 3750 Vrms), low on-resistance, and a wide operating temperature range. This photorelay is designed to meet the stringent requirements of industrial and commercial applications, providing a reliable and efficient solution for signal isolation and switching. Its compact size and robust performance make it an ideal choice for various electronic systems where isolation is critical.