graphic overlay

Specifications

graphic overlay key specifications/special features:

Material: matte PC (smooth), gloss PC + matte oil, gloss PC, PET, and PVC

Thickness: 0.05---1.0mm

LED windows: transparent and  translucent

Embossed keys: no embossed keys and domes, domes without embossed keys, embossed keys without domes, embossed keys and domes

Adhesive: 3M9448,3M9080,3M467,3M468, and no adhesive

Tail: tail with clear mask or green mask

Specialize in manufactuing membrane switch:
Overlay+circuit+LED+metal dome or poly dome array+connector+double side tape
EL backlight+Rubber keys 
Aluminum plate+Rubber keys
Metal domes
Flat without Tactile Effect
Embossing with Tactile Effect
Embossing with Metal Dome
Membrane switch with FPC

Membrane switch Advantages: 
1.Beautiful appearance, rich and bright in color,design can be arbitrary, the products can fully reflect the individual style of the product itself and designer.  
2. Panel can wash, good protection of durable color, characters, logos and other panel contents without injury.  
3. Small size, light weight, thin thickness, good tactility,abrasion resistant,installation and connection convenience.  
4. Tightness is good, moisture-proof, dust-proof, waterproof, anti-oil, anti-corrosion and erosion of harmful gases proof, acid and alkali proof, quakeproof.  
5. Low cost, high lifespan, membrane switchs design and manufacture are using the keyboard as a whole way, whether on the material or mold charges, the costs are lowest,the life expectancy of  different types of membrane switch is more than 100 million times.  
6. Easy to operate, intuitive, safe and reliable,In-house 100% functionally tested,components are guaranteed without any intermittent problem.
 7.Customized specification is available and keys can make different shapes.

Performance indicators: 
1. Electronic characteristics 
Circuit rating: 35V (DC), 100mA, 1W
Contact resistance: 10Ω--500Ω (According the trace length and materials to comfirm) 
Insulation resistance:> 100MΩ 250V DC 
Contact bounce: ≤ 5ms     Dielectric withstand:250VRms (50-60Hz 1min) 
Life expectancy: flat type ≥ 500 million times, tactile type: ≥ 100 million times 
2. Mechanical Properties  Actuation force:flat type 57-284g (2-10 Oz), tactile type 170-397g (6-14 Oz)  Switch stroke: flat type 0.1-0.5mm, tactile type 0.6-1.5mm 
3. Environmental parameters 
Operating Temperature: -40 - +80 , Storage temperature: -40 - +85
Humidity: 40 , 90% -95%, 240 hours