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Membrane switch,Membrane keypad,Membrane keyboard Advantages: 1.Special plastic performance and tightly stick on keypad. 2.With the infiltration of static the effect of protecting the loop happened. 3.Manufacturing engineering can be more difficult compared with the exist metal dome 4.Strong applicability to be the changeable climate. Specifications: 1. Overlay materials:The most commonly used base materials are polyester(PET) and polycarbonate(PC). 2. Rear adhensive:3M 467MP,3M 468MP,etc. 3. Standard tolerances:+/-.010inch. 4. Matching color:panton and RAL color matching system. 5. Tail,pin and circuit layout:subject to customers detailed requestments. 6. Type of switch: (1) Non tactile (2) Graphics (3) Tactile with stainless steel domes (4) Tactile with poly domes on the circuit. Performance: Electrical 1. Operating voltage:0-35V DC. 2. Operating current:100 MA Max. 3. Operating contact resistance:less than 100 OHMS typical. 4. Contact bounce:less than 5 Milliseconds typical. 5. Conductors:printed silver conductive inks or carbon blend. 6. RFI and ESD shielding:available in most configurations. Mechanical 1. Life expectancy:1,000.000 actuations per switch position 2. Actuation force:6-24 ounces,range depending on customer specification. 3. Switch travel:.005 to .030 typical 4. Overall thickness:.020 to .050 typical Environ mental 1. Storage temperature:-40(-40°F) to +70(158°F) 2. Storage altitude:sea level to 35,000 feet 3. Operating temperature and attitude: -30(-30°F) to +75(170°F),can be designed to operate in most environment. 4. Humidity:no delamination after 24 hours at 80 and 90%RH