Flexible keyboard are usually manufactured according to
the customer’s specifications for prototypes and
Flexible keyboards are of two types i.e. Flexible keypad
& Flexible tactile keypad. The above keyboards can also
be assembled on Base plates of Aluminium, M.S. Epoxy
etc. and supplied as a complete Front Panel.
Specifications & Environmental
Humidity No effect at 90 % R.H.
Operating Temperature - 25 to 75 + degrees Celsius
Storage Temperature - 30 to 85 + degrees Celsius
Capacitance < 15pf.
Contact Bounce < 10ms.
Contact Rating 5 V DC 15 Ma Max.
Switch configuration Momentary SPST, normally open
Contact Resistance Circuit dependent. Generally less
than 100 Ohms.
Switch Logic Special / Matrix / Common Bus
Key movement 0.18mm. to 0. 42mm
Dome operation up to 10million operations.
Actuation Force 150 gms. to 350 gms.
Mounting & Termination Methods.
It is necessary to select the correct mounting and
termination for the membrane keyboard to ensure is long
life and reliable operation.
Flexible keyboards are terminated through Clincher
Connectors or by a Male Solder able Contacts.
Various mounting methods viz., Adhesive back, keyboard
mounted on backing plate, sliding type arrangements for
keyboards with rigid base keyboards mounted by screws
visible / invisible from front side etc. are followed.
Even special mounting arrangement to suit a specific
need can also be devised.
PCB keyboard are
normally terminated through single row/double
row berg strips, IC sockets, FRC connectors,
solder able pads. Etc.
Contacts and control components can be mounted
with press machine The cost-effectiveness of
your overall system is increase by space saved.
Advantages PCB Based Keyboard
Display fields LED, window
Weight reductions and space
Separated of screw connections
by means of single layer
Save your electricity and
electronic and electric equipments
PCB with the double function as
a substrate for the keypads and the connected
electronics hermetic sealing of PCB and foil