Components: Pushbutton Switches Sealed With O-rings Repel Contaminants

March 3, 2005
The M2B miniature pushbutton switches feature an interior O-ring surrounding the actuator within the bushing, keeping out harmful contaminants. The bushing and the housing top both have single-unit construction. Terminals are epoxy-sealed to keep out

The M2B miniature pushbutton switches feature an interior O-ring surrounding the actuator within the bushing, keeping out harmful contaminants. The bushing and the housing top both have single-unit construction. Terminals are epoxy-sealed to keep out contaminants as well. Their minimum lifetimes are 25,000 operations for silver contacts and 100,000 operations for gold contacts. Single- or double-pole double-throw momentary types are available. There's also a choice of two different plunger lengths and four cap diameters in various colors. Pricing is $2.79 each in 1000-unit lots, and lead time is stock to six weeks.

NKK Switcheswww.nkkswitches.com; (480) 991-0942

About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.

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