Light touch switch is an electronic switch, which belongs to electronic components, also known as key switch. It first appeared in Japan [called: sensitive switch]. When it is used, it applies pressure to the operation direction of the switch to meet the conditions of operating force. The switch function is closed and connected. When the pressure is cancelled, the switch is disconnected, and its internal structure is realized by the force change of metal shrapnel.



The light touch switch is composed of insert, base, shrapnel, button and cover plate. The waterproof light touch switch adds a layer of polyimide film on the shrapnel.



The light touch switch has the advantages of small contact resistance, accurate operating force error, diversified specifications and so on. It is widely used in electronic equipment and white household appliances, such as video and audio products, digital products, remote controls, communication products, household appliances, security products, playing equipment, computer products, fitness equipment, medical equipment, note checking pen, laser pen keys and so on. Because of the environmental conditions of the light touch switch (elastic force less than twice the pressure / ambient temperature and humidity conditions and electrical performance), large equipment and high load buttons are directly replaced by conductive rubber or pot switch hardware shrapnel, such as medical equipment, TV remote control, etc.



About the pin position of the five pin light touch switch: the two pins are a group. When the switch body is correctly pressed, the four pins are connected, and the fifth pin is grounded.



Light touch switch is the fourth generation switch product developed with the requirements of the development of electronic technology. The earliest volume is 12mmX12mm, 8mm and 8mm, and now it is 6mm, less than 6om. There are three types of product structures: vertical, horizontal and horizontal with ground end. Now there are two types: combined type (3m, 4m, SM, 6m and SM) and potentiometer touch switch combination, which meet the requirements of various domestic electronic products. Installation dimensions are 6 SMM fire is 4.5mm, 5.5mm and 4mm and 6mm and 4mm. There are 4.5mm and 4.5mm small touch switches and chip touch switches abroad. Chip touch switches are suitable for surface assembly. At present, the use of conductive rubber switches is also very popular.

At present, there is a fifth generation switch - membrane switch, which has the same function as the touch switch. It is mainly used in electronic instruments and CNC machine tools, but it has high resistance and poor hand feeling. In order to overcome the poor hand feeling, some membrane switches are not made of silver layer as the contact point, but are equipped with contact reeds.