The TS-FS66T-C-B with Tactile Switches SMD RoHS is a surface-mount device composed of a base, a contact, and an actuation force. The base is a 2.2 x 2.2mm square body. The contact is a nickel plated beryllium copper spring. The actuation force is 4.0N. It is RoHS compliant, meaning it is free of hazardous materials or process. It is manufactured by XKB, a Chinese-based manufacturer of various electronic switch products. The TS-FS66T-C-B is rated with a current of 50mA at AC50Hz, and a contact resistance of 100mO max at 1mA 5VDC. It has an insulation resistance of 100MO min at 500VDC, and an electrical life of 500,000 cycles at full-rated load. The operating temperature range is -25 to +85 degrees Celsius. The TS-FS66T-C-B with Tactile Switches SMD RoHS is designed to be used for power conversion, mobile devices, I/O control, lighting control or any other circuit requiring a switch component.