KSC9 SMD Sealed Tact Switches C&K Switches KSC9 SMD Sealed Tact Switches are inherently smaller and more flexible than many other switch technologies. This compact size and flexibility make the KSC9 series ideal for industrial electronic, consumer, automotive, and instrumentation applications. These 7.7mm high hard actuator switches provide a positive adaptable tactile feeling, offer J or G terminations, and are rated IP67. C&K Switches KSC9 SMD Sealed Tact Switches have an operating temperature range of -40°C to +85°C (+125°C for the gold version).