SOF Tactile Switches with Button Mitsumi SOF Tactile Switches with Buttons feature a small, low-profile solution that is easily integrated into many electronic applications. The switches have a stainless steel dome for a long lifespan and a good click feel. The SOF series offers a small mounting area that is suitable for mounting on a narrow key pitch and SMT reflow soldering. The Mitsumi SOF Tactile Switches with Buttons are ideal for smartphones, digital cameras, gaming devices, and other consumer, medical, and commercial industries.