AQY211G2SX
Overview
The AQY211G2SX is a high-capacity SPST-NO (1 Form A) PhotoMOS relay designed for switching both AC and DC loads up to 1.6 A. Housed in a compact 4-pin SOP package, it provides galvanic isolation between the input and output stages without the mechanical wear of traditional electromechanical relays. This part is specifically engineered for low on-resistance and stable switching performance in space-constrained designs.
Why Choose This Part
The component offers an exceptionally low maximum on-state resistance of 150 mOhms, which minimizes power loss and heat generation during high-current operation. Its solid-state design eliminates contact bounce and electromagnetic interference, significantly extending the operational lifespan compared to mechanical alternatives. Additionally, the small 4.40mm SOP package saves PCB real estate while supporting load voltages up to 40 V.
Applications
Key Specifications
Getting Started
To drive the internal LED, ensure the input current is limited by a series resistor based on the 1.32VDC typical forward voltage. Engineers should verify that the peak load current does not exceed the 1.6 A rating under the specific ambient temperature conditions of the enclosure. No external snubber circuit is typically required for resistive loads, but protective diodes should be considered for highly inductive loads.
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