Coto Technology Introduces MEMS-Based Magnetic Reed Switch

Coto Technology, Inc. has announced the RedRock RS-A-2515, a Microelectromechanical Systems (MEMS)-based magnetic reed switch. Based on its unique high aspect ratio MEMS design and manufacturing processes, the switch provides all of the advantages of conventional magnetic reed switch technology, including zero power operation and high-power hot switching. Coto has married these features to the inherent benefits of MEMS-based design and manufacture, including item-to-item uniformity, robustness and small size by using wafer level packaging (WLP). The resulting solution meets the demanding requirements of applications in the medical, military and industrial markets. The switch has a footprint of less than 2.1 mm² (1.01 by 2.08 mm), is 0.94 mm high and is the smallest MEMS-based reed switch available on the market today.

The Coto Technology RS-A-2515 MEMS-based magnetic switch, the first of a new Coto Technology switch family, exhibits all of the high performance characteristics inherent in classical reed switches. These include closure sensitivity ranges from 5 to 25 millitesla (mT), permitting operation up to 20 mm using a small NdFeB magnet. This provides it with the ability to address a wide range of applications. The switch has a release sensitivity greater than 15 mT, minimizing the risk of sticking when the magnetic field is removed. The RS-A-2515 has a maximum switching voltage of 100 VDC with a switching current of 50 mA DC or 35 mA AC, RMS. The zero operating power is a critical advantage in power sensitive applications, particularly those operating with battery power. Marrying these major performance advantages with the inherent benefits of batch processed MEMS technology including wafer level hermetic packaging, low-cost manufacturability, and item-to-item reproducibility provide a truly unique advantage for its selection in demanding applications.

Mr. Bill Gotschewski, Coto Technology’s vice president of Sales and Marketing said, “Our newly introduced RedRock MEMS-based switch further demonstrates the leadership position of Coto in the small signal switching business. This time we have taken a gigantic leap in adopting a unique technology, high aspect ratio MEMS, as the platform for migration of traditional magnetic reed switch solutions. We believe that the combination of our traditional magnetic reed switch technology with a MEMS platform will be an enabling vehicle for many high performance applications that require extremely small switch size. I am gratified that we have been able to create a number of design wins with our RedRock switch to date and we are looking forward to collaborating with many other OEMs to enable them to create truly differentiated and successful applications for their products.”

The Coto Technology RedRock MEMS-based magnetic Reed switch RS-A-2515 is available from stock in evaluation quantities at the unit price of $29.95. Coto also provides an evaluation kit, RS-A-2515 EVAL. Available from stock, the kit sells for $49.95 in single piece quantities.