Surface Mount LED
Integrated surface mount L.E.D.s within flexible membrane keypads

The integration of subminiature L.E.D.S within a flexible keypad may be the cost effective alternative you have been seeking. By eliminating the need for an etched printed circuit board, or etched flex-circuit CSI can provide a thin, (.022"- .055") assembly with the L.E.D.S and any necessary resistors built in. This can dramatically increase your design freedom and preclude the potential alignment problems otherwise typically encountered when L.E.D.S are on a subassembly beneath. CSI has been providing flexible membrane keypad assemblies with integrated L.E.D.S since 1983. We know the secrets to maintaining the reliability you expect.