EYE on NPI – E-Switch’s RT3301 Series Reverse Tactile Switch #EYEonNPI #DigiKey #Adafruit @digikey @eswitch @Adafruit

This week’s EYE ON NPI (video) will have you doing cartwheels and somersaults, it’s the E-Switch RT3301 Series Reverse Tactile Switch, a spin on the common 6×6 tactile switch, with reverse mounting for easy assembly and clean design.

E-Switch manufactures thousands of different tactile switches that are stocked at DigiKey of various sizes, actuator heights, and mounting styles. In addition to the classic 6x6mm tactile switch, there’s also the SMT 6mm tactile that can be pick-and-placed.

These buttons have built-in round actuators but they’re intended to be used with moulded buttons that have a nub to do the actual pressing: the actuator is just for height.

Which explains how the through-hole reverse mount 6mm tactile switch is expected to work – you’re going to definitely need an actuator button since otherwise your fingers will bump into the solder pads!

The most curious of these is the reverse-mount SMT tactile switch, which was recently featured by DigiKey in their new products section…and with great timing because just a few weeks ago we published a cool Lisp-powered badge project with a built-in keyboard on the blog.

To make the key labels nice and large, the author used similar switches with an angled layout for tight packing. The result is a nice clean look on the front, without needing to purchase separate key caps.

We’ll note that the RT3301’s actuator is not as long, so using it with a half-thickness board will get buttons that are flush with the PCB surface. That means it’s best for use with separate key caps or overlay…but we’re also pretty sure that E-Switch will come out with another version that has longer actuator – just like they have a variety of actuator lengths on the non-reverse 6mm tactile switches.

If you want to try E-Switch RT3301 Series Reverse Tactile Switches, they’re available right now and in stock at DigiKey for immediate shipment! Order today and you’ll have reels or cut tape in hand tomorrow afternoon, a great solution to your complex UI panel design problems.

And check out the E-Switch video below:


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