Small, double-action tact switches are top-actuated

C&K COMPONENTS KMT Series of ultra-miniature tactile switches are small, top-actuated and provide double-action. Model KMT5 is ultra-low profile and provides a lifespan of more than 300,000 electrical and mechanical cycles, and has a height of just 0.70mm (including the actuator). Product has an IP 57 rating. The first action is sensitive (not tactile) while the second action has a tactile feeling of greater than 30%. The RoHS-compliant and halogen-free device measures 2.6 x 3.0 x.0.7mm.

http://www.ck-components.com