IXYS – High-current solid-state relay features slim and compact chip-style package


IXYS Integrated Circuits Division, a part of Littelfuse, has introduced the CPC1705Y, a 60V, DC-switching Solid-State Relay (SSR) in a slim chip package.

The relay uses an optically coupled, single MOSFET output-switch architecture, and has a single-pole normally closed (1-Form B) configuration. It is capable of switching a maximum load current of 3.25A, a higher current than any other SSR with an equivalent configuration and housing.

The device is supplied in a four-pin single in-line package which measures 10.2mm x 21.1mm x 3.3mm. This slim design facilitates multiple channel switching in dense PCB designs.

The CPC1705Y SSR provides 2,500Vrms of input-to-output isolation and features very low maximum on-resistance of 0.09Ω.

The relay’s output includes an efficient MOSFET switch which uses IXYS’ patented OptoMOS architecture. The input controls the optically-coupled output, requiring only 5mA of input current to activate the isolated DC switch.

The combination of low on-resistance and high load-current capability makes this relay suitable for a variety of high-performance switching applications, offering a safe alternative in hazardous environments to electromechanical relays, which can generate sparks.


  • 1μA maximum off-state leakage current at 25°C
  • Operating-temperature range: -40°C to 85°C
  • UL 508 recognised
  • CSA certified


  • Transportation equipment
  • Automotive systems
  • Security equipment
  • Battery back-up systems
  • Industrial control systems
  • IoT power control
  • Robotics