Miniature push button switches with a low height of 4.55 mm for surface mounting (SMS).The SMS has large flar surfaces on the top side as well as on the other sides, which are also parallel to each other. This makes the SMS a perfect switch for automatic mounting.The SMS switch is suitable for the SMD Soldering process "IR-Reflow".The switch comes with the SMD-leads "Gullwing and J", With J-leads the switch can be lined up with a spacing of 1/2" in one coordinate direction, and with > 13.5 mm in the other coordinate direction, and in the other coordinate direction with > 17.5mm.A minimum spacing of 1/2" to 15 mm in necessary for the PCB versionBasically, the SMS and PMS come in two basic versions concerning the degree of protection. Available are IP 40 and IP 67. According to the degree of protection the IP 40 version in not proof against fluxing and washing, whereas the IP 67 version is. Consequently, The IP 67 version can be exposed to the specified soldering and cleaning processes.The miniature push button switches feature a very good tactile response with an actuation force of about 2N. SMS and PMS are also available with an elongated actuator. These variants server as base modules for the SMS/PMS variable height version.