ALPS Electric co., LTD. Tact Switch SKRA Products Line Model Operation force Travel Ratings (max.) Lifetime (5mA 5V DC) Initial contact resistance Variety SKRA 2.94N{300gf} 0.35mm 50mA 12V DC 100mΩ max. Stem height h=3.5mm SKRA 4.41n{450} 0.4mm SKRA 1.96n{200} 0.5mm Stem height h=5.2mm SKRA 3.43n{350} 0.7mm Dimensions                                        Unit : mm Circuit diagram Printed circuit board mounting hole dimensions (When viewed from the switch mounting face) It is suggested to use a P.C.Board of 1.6mm thick.