ASSR-4118-003E
Overview
The ASSR-4118-003E is a high-voltage 1-Form-A solid state relay (SSR) designed for low-current switching applications up to 400V. It uses an infrared LED and a high-voltage MOSFET output stage to provide reliable opto-isolation in a compact SO-4 surface-mount package. This component is an ideal solid-state alternative to traditional electromechanical and reed relays, offering silent operation and a significantly longer lifecycle.
Why Choose This Part
This SSR features a high breakdown voltage of 400V and can handle load currents up to 0.1A. Its solid-state construction eliminates contact bounce and mechanical wear, ensuring high reliability in harsh industrial environments. The SO-4 package provides a small footprint for high-density PCB designs while maintaining excellent isolation properties.
Applications
Getting Started
To integrate this device, drive the input LED with a constant current source or a logic-level signal through a current-limiting resistor, typically targeting an input current of 5mA to 25mA. Ensure the load voltage and current remain within the 400V and 100mA absolute maximum ratings. Decoupling the input side and following standard creepage and clearance guidelines for high-voltage PCB layout is recommended.
