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SP540-X
1 Form A Solid State Relay DESCRIPTION
www.datasheet4u.com The SP540-X is a single-pole, single-throw, normally open multipurpose DC solid-state relay designed to replace electromechanical relays in critical applications requiring fast switching and solid state reliability. It is composed of an AlGaAs LED optically coupled to a Photo Diode Array that drives an Low On-resistance Enhancement Type DMOS transistor on the output, providing a high load current rating. A 300 ohm input resistor in series with the LED eliminates the need for a discrete resistor to be provided in application circuit, allowing the SP540-X to be activated by most common logic level signals.