AQY210SX
Overview
The AQY210SX is a PhotoMOS solid-state relay in a compact 4-pin SOP package, designed for high-voltage switching up to 350V. It functions as a SPST-NO (1 Form A) relay, providing optical isolation between the input LED and the MOSFET output. This component is ideal for applications requiring silent, bounce-free switching with a load current of up to 120 mA.
Why Choose This Part
This photorelay offers a high load voltage rating of 350V in a miniature SOP4 footprint, significantly saving board space compared to traditional mechanical relays. Because it has no moving parts, it eliminates contact bounce and mechanical wear, leading to a much longer operational life in high-cycle applications. It also features a low input drive current of 1.14VDC and low on-resistance for efficient power management.
Applications
Key Specifications
Getting Started
To use the AQY210SX, design a current-limiting circuit for the input LED, typically targeting a forward current below the 50mA maximum. On the output side, ensure the load does not exceed 120mA and 350V, following the provided PCB land pattern for the 4-SOP package. Consider adding a snubber circuit if switching highly inductive loads to prevent voltage spikes.
