BUY B3F-4055 https://www.utsource.net/itm/p/11592635.html

Description: The B3F-4055 is a tactile switch manufactured by Omron. It is a surface mount device (SMD) with a 4.5mm x 4.5mm square body. Features: * Rated voltage: 50V DC * Rated current: 0.1A * Contact resistance: 100mΩ max * Insulation resistance: 100MΩ min * Operating force: 2.2N * Travel: 0.3mm Application: The B3F-4055 is commonly used in consumer electronics, such as cell phones, digital cameras, and other portable devices. It is also used in automotive and industrial applications. (For reference only)