PTS526 Ruggedized SMT Tactile Switches C&K Switches PTS526 Ruggedized Surface-Mount (SMT) Tactile Switches are top-actuated, momentary-action switches in a 5.2mm x 5.2mm footprint. These switches vary in thickness and offer optional heights of 0.8mm, 1.5mm, 1.7mm, or 2mm. This commercial-grade series comes in 160gf, 260gf, and 320gf actuation force options. C&K PTS526 switches withstand up to 500K life cycles. Typical applications include Internet of Things (IoT) devices, home automation, and remote-controlled consumer items, such as drones.