All the parts of Panasonic Light Touch Switches are designed by Panasonic including the Metal Dome, which is Panasonic’s core technology. Panasonic’s design capability, experience of high precision die making, high quality assembly and high-volume production ensure the reliability, precision, quality and low cost of the Panasonic Light Touch Switches. The Panasonic Light Touch Switches are momentary push-on tactile switches that draw very ow current up to 20mA and 15VDC voltage. The Light Touch Switches offer high durability that is established on Panasonic’s expertise and experience in portable electronic devices. Panasonic’s Metal Dome technology allows an industry-leading long cycle life and excellent tactile feel. The Light Touch Switches use Panasonic’s patented laser welding technology that allows Panasonic’s Light Touch Switches to achieve IP67 Rating while offering a sharp tactile feel. Features include a sharp, clear click, low contact resistance, minimal bouncing noise, and high contact reliability. Panasonic offers options such as super-thin, super-small, side-mounted, double-action, long travel (stroke), over travel, a wide selection of operating forces, as well as surface-mount and J-bent terminal mounting options.
Tactile switches have been widely used in modern consumer electronics, like smartphones, tablets, laptops, and car dashboard. Selecting the right tactile switches can be crucial to the successful designs. In contrast to many other passive components that heavily rely on the datasheets for selections, selecting a durable tactile switch with the right feel need more than just looking through its specs.
To better use the tactile switches in designs, one must first to understand the value and limitations of actuation force specifications. Following the working principle of tactile switches, we know the importance of the switch’s actuation and contact forces, especially the click ratio that reflects the relationship of the actuation and contact forces as shown by below expression. A higher click ratio indicates a crisper or snappier switch feel. The travel distance or deflection of a pressed tactile switch also contributes to its overall feel.
Click Ratio = (FACT – FCLICK)/FACT x 100
Where FACT = Actuation Force, FCLICK = Click Point Force
For many applications, it’s not enough to only consider the forces and travel specifications. Portable consumer electronic devices normally require crisp tactile switches with relatively high click ratio and shorter travel distances.