PTS636 Top-Actuated Tactile Switches C&K Switches PTS636 Top-Actuated Tactile Switches feature a 6mm x 3.5mm package with a height of 2.5mm, 4.3mm, or 5mm and a hard actuator in four actuation force options: 130gf, 180gf, 250gf, and 320gf. These momentary-action switches last up to 100,000 cycles, depending on the model, and are available in Through-hole (THT) or surface-mount (SMT) styles. Ground-pin options are included in the 2.5mm version. C&K PTS636 switches feature 12VDC maximum voltage, 50mA maximum current, >,250VRMS dielectric strength, and an operating temperature range of -20°C to +70°C. Applications include home automation, Internet of Things (IoT) devices, remote controls, drones, e-bikes, and cleaning robots.