The TLP172A is a solid-state relay (SSR) from Toshiba Semiconductor and Storage, designed for a variety of switching applications. It offers electrical isolation between the control circuit and the load circuit, providing enhanced safety and noise immunity. This SSR is commonly used in industrial control systems, telecommunications equipment, and other applications where reliable and isolated switching is required.

Applications

• Industrial control systems
• Telecommunications equipment
• Programmable logic controllers (PLCs)
• Automatic test equipment (ATE)
• Power supplies

Features

• Solid-state relay (SSR)
• Normally open (NO) contact
• Rated voltage: 60V
• Load current: 400mA
• Isolation voltage: 3750 Vrms
• Low on-resistance
• Surface mount package
• Operating temperature range: -40°C to +100°C

Benefits

• Electrical Isolation: Provides high isolation voltage between the control and load circuits, enhancing safety and preventing noise interference.
• Long Lifespan: Solid-state design eliminates mechanical wear, resulting in a longer lifespan compared to electromechanical relays.
• Fast Switching Speed: Offers faster switching speeds compared to electromechanical relays, improving system response time.
• Low On-Resistance: Minimizes power dissipation and heat generation.
• Compact Size: The surface mount package allows for easy integration into space-constrained applications.
• Reliable Performance: Provides reliable and consistent switching performance in demanding industrial environments.

The TLP172A utilizes an LED to activate a phototransistor, which in turn controls the switching of the load circuit. The optical isolation provides excellent electrical isolation and noise immunity. The low on-resistance minimizes power dissipation and heat generation, improving efficiency. The surface mount package simplifies assembly and allows for high-density board designs. The TLP172A is designed and manufactured to meet stringent industry standards for safety and reliability. Its compact size, fast switching speed, and high isolation voltage make it a suitable choice for a wide range of switching applications where reliability and safety are paramount.