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Membrane switch
Touch screen
Flexible circuit
EL backlight
 
Technic
Membrane switch
Touch screen
Flexible circuit
EL backlight
Tel: +86-755--36927705
Fax: +86-755--29530221
Sales: sale@xemda.com.
Support: sale@xemda.com .
 
Technic >> Membrane switch    
Standard structure:
Overlay material:
Item PET PC PVC Silicone
Life-time of bending very good good bad very good
Corrosion resistance good good very good good
Wear resistance very good very good bad good
Insulation good normal very good very good
Transparence very good very good normal bad
Temperature level good good normal good
UV resistance bad bad normal bad
Circuit layer:
There are 2 different material, FPC (Flexible Printed Circuit) and PET membrane circuit. PET membrane circuit is widely used for membrane switches because of its lower cost and good performance. If there are some SMD components and circuit is complex, it is better to select FPC.
Membrane switch standard specification:
Electrical
Maximum Circuit Rating 35VDC, 100mA, 1W
Contact Resistance 10~ 500
Insulation Resistance 100M at 100VDC
Dielectric Withstand 250Rms (50~60Hz per min)
Contact Bounce <5ms
Mechanical
Actuation Force
a) Flat type 60 ~ 300g (2 ~ 10oz.)
b) Tactile type: 150 ~ 400g (6 ~ 14oz.)
Switch Stroke
a) Flat type 0.1 ~ 0.5mm
b) Tactile type: 0.6 ~ 1.5mm
Cable pitch
2.54mm, 2.50mm, 1.27mm, 1.25mm
Tolerance +/- 0.2mm
Environment
Operating Temperature
-20 ~ +70
Storage Temperature
-40 ~ +80
Humidity
40, 90% ~ 95% for 240 hours
Life expectancy a) Flat type: 5,000,000 closures or more
b) Tactile type: 1,000,000 closures or more
Contact us by Msn:
Address: Xixiang, Second Industrial Zone Village, Baoan District, Shenzhen, Guangdong China
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