Tact Switch main specifications are: environmental temperature SMD plug-side plug-large / medium / small turtle type touch switch touch switch 3 2 * 4 * 3 * 3.7 * 3.7 Tact Switch 0.35 goods into touch switch 4 * 4 * 1.5 / 1.6 / 17mm tact switch 3 * 6 * 4.3 / 5.0mm car touch switch 4 * 6 * 2.6 * 4.5 * 4.5 Tact Switch 3.8 / 4.8 / 5/0/6/7/8 / 9 SMD Tact switch Tact Switch plug-side plug-touch switch.

6 * 6 * 4.3 / 5.0 / 5.5 / 6/7/8/9 / 9.5 / 10/11/12/13/14/15/16/17/18/19/20/21 / 26mm SMD Tact Switch Plug-touch switch touch switch 6.2 * 6.2 * 2.5 / 2.7 / 3.1 / 3.4 Tact Switch 12 * 12 * 4.3 / 5.0 / 5.5 / 6/7/8/9/10/11/12/13/14/15 / 16/17/18/19/20/21/22 / 23mm Tact Switch 6 * 6 series Waterproof touch switch 8x8 series waterproof touch switch series 10 * 10 12 * 12 waterproof touch switch series waterproof touch switch.

      The quality factors tact switch, the main key is to touch the switch protection, weldability, conduction reliability, longevity, feel, production processes and installation dimensions and other factors decided to first base for the pin, tap pin base switch is brass or phosphor bronze (low grade iron), in order to reduce contact resistance, the pin is substantially silver-plated silver case of SO2 gas is oxidized in the air, directly affects the switch solderability and contact resistance, so high-quality touch switch must first be in place to control the thickness of the base material and silver-plated silver-plated pins technological aspects, advantages and disadvantages of the market silvered following order:

      Silver plated thickness: 0.3um above (thick silver), 0.2um (thin silver), 0.1um (plated white)
Silver Plating: Pre-nickel and then silver-plated substrate, the substrate is then pre-plating silver, silver-plated base directly
Is there a silver-plated for protection after the substrate or switch is treated with dust and water is very critical, otherwise even the best silvering process, the switch will be oxidized.
Secondly conduction reliability key factor is the structure of contact points, because the function of touch switch contacts and shrapnel conductive contact, then the contact surface of the contact point better, the contact surface by the structure of the decision, on the market about three class structure, the merits of the order as follows:

 Bullae (crater-type) "O-type contact," Slotted "2-point contact" type bubble level "1 point contact"
Third, life and feel the touch switch with stroke and shrapnel decision, the longer the trip, the shorter the life of the lighter sound, longer stroke and vice versa, at a fixed shrapnel craft situation, mainly to see the light travel or sound decision touch the life of the switch;

   In addition, a key factor in the decision shrapnel life or stamping technology, Japan and Taiwan before stamping technology is now more popular in the country already, so in the case of technical upgrading, the material requirements are imported materials further reduced, for example, life expectancy in the market is 160gf shrapnel there are four main
50,000 times or so (domestic phosphor bronze or backward stamping technology), about 10 million times, more than 20 million times (stainless steel)

       Fourth, the production process, after having parts that ultimately affect the quality of the assembly process, assembly process depends on the production capacity of the company's management, staff quality and meaning and quality assurance capabilities and other factors, different ability to guarantee the quality of the final product certainly out different, now the market is artificial and machine assembling method, because the current automation capabilities further enhance, and would therefore have advantages and disadvantages: low machine assembly costs but low product quality, high labor assembly costs but the quality is high.

       The fifth is the factory inspection, factory inspection methods and projects also affect the final quality touch switch, such as the look, feel, conduction, resistance and other projects are sampling or seizure, such as some manufacturers claim rejection rate is PPM to measure or defect, it is necessary to set all seized the factory inspection also set the sampling or quality inspection processes.