The touch switch belongs to the electronic switch class, and is now widely used in mobile phones, digital cameras and other related electronic industries. The interior relies on tiny metal shrapnel to open and close, so what is the use of a touch switch in mobile phones?
1. The size of mobile phone touch switch is small, and it is a patch touch switch, which can be reflow welding. Braided packaging, in order to improve the assembly density of parts on the PRINTED circuit board, can be high-density installed in compact mobile phone equipment.
2. Operating force: 100g 130g 160g. The silicone keys used on mobile phones require hand feeling, life and strength to be strict, but these three points are complementary Nemesis.
3 shrapnel requirements are high, feel crisp. Frequent pressing will make metal shrapnel fatigue loss of elasticity and failure. So now most of the buttons of electrical appliances are using conductive rubber or pot switch metal shrapnel directly to replace, such as computer keyboard, remote control and so on.
4. Halogen-free requirements, roHS environmental protection certification. With the progress of society, human beings have higher and higher requirements for environmental protection, among which halogen-free requirements of products are also highly valued.
5. Material quality, high life. Light touch switch shell material, the market generally choose PC material, impact resistance, high temperature resistance, not easy to change color characteristics for the control of electrical switch is very important. Touch switch front and back of the base are PC material. The service life of the touch switch industry is generally more than 100,000 times.
6. Contact points of conductive parts during switching. At present, there are three main types of contacts, silver – nickel alloy, silver – cadmium alloy and pure silver. Silver-nickel alloy is an ideal contact material, which has good conductivity and hardness and is not easy to oxidize and rust.
Post time: Mar-29-2022