There are many kinds of light touch switch classification, with small appearance, ultra-thin, small force (minimum can reach more than ten GF) and light characteristics. There are standard type, sealed type, SMD type, waterproof type, straight plug type, horizontal side plug type and so on. Contact plated with silver and gold. The main installation forms are insert welding, insert pin type, surface mount and so on. Dimensions: 2×3, 4.5×4.5mm, 5×5, 6×3.5mm, 6×6mm, 6.2×6.2mm, 8×8mm, 10×10mm, 12×12mm, etc. Advantages are suitable for high density surface mount, some can be cleaned after welding, sealing type can be dustproof, the most suitable for harsh environment selection, simple circuit design. Product life ranges from 100,000 to 1,000,000 times.
Better touch switch in production, the front panel and back of the base are MADE of PC material, and the general switch will use black nylon material to replace PC material on the base, so that the cost can be reduced a lot. Touch the contact of the switch and the contact point of the conductive part during the switching process. Contact point one depends on the size, two depends on the material. At present, there are three main types of contacts, silver – nickel alloy, silver – cadmium alloy and pure silver.
The silver-nickel alloy of light touch switch is the ideal contact material at present, which has good conductivity and hardness and is not easy to oxidize and rust. Silver-cadmium alloy contacts are also better in other aspects, but cadmium is a heavy metal, on the one hand, harmful to human body, digital communication, on the other hand, and the fusion of silver is not ideal, will form cadmium metal particles on the surface of the contact, may pull out the arc when conducting. Pure silver as a contact is not really suitable, conductivity is really good, but the texture of pure silver is soft, but also easy to oxidize. Soft texture, switch more contact deformation; Oxidative rust, the conductivity will be much worse, rust is also easy to heat, it is easy to burn out the contact.
The touch switch is widely used and has no small effect. Light touch switch parts small size and light weight, must not underestimate its use value, close to the use of life, such as: audio and video products, digital products, remote control, communication products, household appliances, security products, toys, computer products, fitness equipment, medical equipment and so on. A good quality of light touch switch, can improve the efficiency of work and learning, but also make our household appliances more convenient to use, but also determines the service life of electrical appliances, to avoid a lot of frequent switch problems and have to choose to replace the electrical situation. Therefore, the choice of light touch switch is also very important.
Post time: Apr-09-2022