Contact us: Tel +44 (0)1844 202400 Fax +44 (0)1844 202500  e-mail sales@apem.co.uk 

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Flexible Keypads
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Flexible Membrane Keypads

 
Membrane keypads carry out switching functions and enhance the final product with a tailored decorative appearance. They can be directly connected to the electronic equipment by a flexible tail termination. They consist of several layers of polyester and adhesive.
 
 
 
    The technologies    
 

Without tactile feedback


 
With tactile feedback by snap dome

 
With tactile feedback by key embossing

 
Mechanical specifications
 
Contact force :2 N +/- 20%
Contact travel :0,21 mm +/-15%
Type of contact :silver ink
Operations :10 000 000
  Contact force :2.5 N +/- 20%
Contact travel :0,48 mm +/-15%
Type of contact :
stainless steel dome + silver ink
Operations :1 000 000
Snap Dome 6 to 20mm
  Contact force :1 to 4 N +/- 30 %
Contact travel :0,5 to 1 mm +/-15%
Type of contact :silver ink
Operations :1 000 000
 
Climatic specifications
 
Operating temperature :
- 25° to + 65°C
Storage temperature :
- 30° to + 85°C
Front face sealing : IP 65
  Operating temperature :
- 25° to + 65°C
Storage temperature :
- 30° to + 85°C
Front face sealing : IP 65
  Operating temperature :
- 25° to + 40°C
Storage temperature :
- 30° to + 70°C
Front face sealing : IP 65
 
Electrical specifications
 
Nominal operating voltage : 24 V
Maximum operating voltage : 50 V
Minimum operating voltage : 1 V
Nominal intensity : 30 mA
Maximum switchable power : 500 mW
Contact circuit resistance : 1 ohm/cm (1 mm track)
Dielectric strength : 250 V rms.
Insulation resistance at 100 V : > 100 Mohms
Maximum contact bounce : < 5 ms
Compatible with TTL & CMOS circuits


    Apem Components Ltd
    Drakes Drive, Long Crendon
    Buckinghamshire
    HP18 9BA. U.K
  Tel +44 (0)1844 202400         Fax +44 (0)1844 202500
  
Registered in England No 1730676 Registered address as above