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Embossed keys poly dome in top circuit tactile membrane switch

Brand:FLEXKYS
Material: PET/PC/PVC
Size:Customized Size Accepted
Certification:ISO9001:2008 /ROHS/SGS
Payment terms:T/T,L/C,Paypal
Shipping by: UPS/ Fedex /DHL /TNT or Other Ways Specified
Delivery time: 10~15 Days After Payment Received
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Description
►Poly dome membrane switch
Poly dome membrane switch is also called Poly dome membrane keyboard,Poly dome membrane keypad or Poly dome membrane button.

►Similar products

►Basic info
•Poly dome structure and circuit design

•How do poly dome work?
When you press the poly dome key, the silver print under the dome connects with circuit on opposite layer, thereby closing the circuit. The click hand feeling indicates the correct operation. The function of poly dome is similar as metal dome.


•How to make poly dome?

•Advantages of poly dome membrane switch
Long working life
Recover easily after bending and do not effect the function
Lower material cost than metal dome
Suitable for products requiring small buttons and lighter pressure

►Normal material of poly dome membrane switch
Materials 
 Part Ordinary Material
    Finish Specification
Graphic Overlay PC(polycarbonate)    Gloss 0.175/.25/.35/.5 mm thickness
Matt 0.175/.25/.35/.5 mm thickness
PET (polyester)    Fine Texture 0.15/.20 mm thickness (Autotex F150/F200, imported)
Velvet Texture 0.15/.20 mm thickness (Autotex V150/V200, imported)
Gloss with Hard Coat      0.18 mm thickness  
Top Adhesive PET Double-sided adhesive   0.10/.22/.28 mm thickness
Paper Double-sided Tape   0.10 mm thickness
Transfer Tape   0.06/.12 mm thickness
Retainer PET Gloss 0.125 mm thickness
Spacer PET Double-sided Tape   0.225/.275 mm thickness
Circuit Layer PET Gloss 0.1/.125 mm thickness
Rear Adhesive    Paper Double-sided Tape    0.10 mm thickness
(3M9080A)
  Transfer Tape   0.06/.12 mm thickness (3M467/3M468) 
Connector Pin   Metal,Male/Female 2.54mm
House   Female,2.54mm
  Silver Paste   Acheson ELECTRODA 820B
Carbon Paste   Acheson ELECTRODA 423SS
Insulation Ink   Acheson ELECTRODA 452SS

►Electrical performance 

Wire Resistance

0.5mm width,<1Ω/cm

Rated Current

25-150mA,0-30V DC  

Insulation Resistance

>100MΩ 250V DC

Working Voltage

<50V DC

Working Life

>1 million times

Working Temperature

-20℃-35℃

Working Humidity

40℃,90%RH No Influence

Feed BackTime

10ms


►Note on mounting and operation
Do not use it in high temperature environment (>40℃)for a long time, or the poly dome will lose elasticity.
Do not use it in very low temperature environment (<-25℃)for a long time, or the service life of domes will be affected.
Do not use it outdoor for a longtime.
Do not press the dome by sharp or hard objects.

 
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