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Technology Leader in UserInterface Assemblies

Elastomer keypad - 26095 Elastomer keypad

1455, 32 e Avenue, Lachine, QC H8T 3J1 CANADA · Tel.: 514.631.6662 / 1.866.631.6662 · Fax: 514.631.7533 / 1.866 866.631.7533 · www.ggi-international.com · ventes@ggi-international.com

This quick reference sheet will help our clients make choices that will ensure the parts they specify meet performance requirements and can be manufactured reliably and cost effectively.

Durometer: Conductive Pill:
the hardness of all keytops (switches) on the keypad and the hardness of the base material (unless keypad is a dual duro- meter keypad). The higher the durometer of the keytop or base material, the harder the material. the current carrying contact (silicone rubber impregnated with amorphous carbon) under each keytop that completes electrical connection with the printed circuit board when the keytop (switch) is actuated. Dual Durometer: Air Channel:
describes a method of molding a higher durometer keytop onto a lower durometer base material. air path from switch to switch allowing keytops to return to normal position after actuation and avoid suction effect. Switches are normally vented on at least two (2) sides by air channels. Keytop:
the top surface of the switch that is the direct interface with the user. Bezel Actuation Web:
the faceplate (typically made of plastic or metal) that “egg crates” all switches on the rubber keypad and typically covers the base material of the keypad so that it cannot be touched with human hands. the non-conductive “hinge”, “cushion” or “membrane” creates tactile and stroke possible for each switch on the keypad. Actuation Force:
the maximum force required to begin the switch stroke, and flex the actuation web for each switch on the keypad. Contact Force:
the force a switch typically realizes when contact is made with the printed circuit board. Stroke/Travel:
the distance from bottom of the conductive pill (contact) to the top surface of the printed circuit board. Base:
the sheet material that forms the “apron” for all switches on the keypad. The base of the keypad ties or connects all switches on the keypad together. ISO 9001: 2000 CertifiedANSI ESD 20.20 / RoHS Compliant