construction
The tact switch is divided into two categories: the tact switch using a metal reed as a switch contact piece has a small contact resistance and a cluster of 20mn. Good hand feel, with "ticking" crisp sound. Switching habits that use conductive rubber as a contact path are called conductive rubber switches. The switch feels good, but the contact resistance is large, generally 100 to 300n. The structure of the light touch switch is to move down by the key, so that the contact reed or conductive rubber block contacts the solder and forms a path.
summarize
The tact switch is composed of: insert, base, shrapnel, button and cover plate. The waterproof tact switch adds a layer of polyimide film on the shrapnel.
The tact switch has the advantages of small contact resistance charge, accurate operating force error, diversified specifications, etc. It is widely used in electronic equipment and white goods, such as: video and audio products, digital products, remote controls, communication products, household appliances, security products, toys, computer products, fitness equipment, medical equipment, banknotes, laser pen keys and so on. Because the tact switch on the environmental conditions (pressure is less than 2 times the elastic/ambient temperature and humidity conditions and electrical performance) large equipment and high-load buttons are used conductive rubber or pan switch hardware shrapnel directly to replace, such as medical equipment, TV remote control and so on.