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Concave Button - White

This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.

  • Concave plunger design
  • Durable nylon material
  • Microswitch: max 3A @ 120 VAC
  • Microswitch reliability tested to 10,000,000 cycles
  • Includes 3 terminal microswitch
  • Net weight: 25g* Cap diameter: 35mm
  • Overall height: 65mm
  • Mounting hole: 1 1/8th inch paddle bit (1.125" / 28mm)

Concave Button - White Product Help and Resources

micro:arcade Kit Experiment Guide

July 21, 2017

We love games! We love writing games, building games and yes, even building game consoles. So we want to introduce to you the micro:arcade kit for the micro:bit!

PiRetrocade Assembly Guide

October 28, 2016

Build your very own retro gaming controller with a Raspberry Pi using the SparkFun PiRetrocade Kit!

Button and Switch Basics

May 7, 2013

A tutorial on electronics' most overlooked and underappreciated component: the switch! Here we explain the difference between momentary and maintained switches and what all those acronyms (NO, NC, SPDT, SPST, ...) stand for.


Core Skill: DIY

Whether it's for assembling a kit, hacking an enclosure, or creating your own parts; the DIY skill is all about knowing how to use tools and the techniques associated with them.


Skill Level: Noob - Basic assembly is required. You may need to provide your own basic tools like a screwdriver, hammer or scissors. Power tools or custom parts are not required. Instructions will be included and easy to follow. Sewing may be required, but only with included patterns.
See all skill levels

Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

1 Electrical Prototyping

Skill Level: Noob - You don't need to reference a datasheet, but you will need to know basic power requirements.
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Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Does anyone know what type of connector I need for this switch. I need to solder a wire to a connector that slides onto each terminal post.

    • Yes, it would be nice if the terminal width was listed in the description.

      • I found this post on the comments on this connector :

        "FYI: I happen to have some of the Sparkfun arcade buttons (both kinds). I measured the terminals on both (with calipers), and here are the results: “Concave Button” (COM-09336): 0.187 inches – will work with 1/5" (0.2", a little big, but close enough) “Push Button” (COM-09177): 0.110 inches – way too small for 0.2" quick disconnects"

  • I wrote a quick how-to to show how to install an LED into these to illuminate them see http://www.instructables.com/id/HackMod-a-concave-arcade-style-button/

    • Awesome. Thanks. I also followed your instructions and placed an RGB LED inside. I recommend using reflective aluminum duct tape or silver paint inside the button walls to make it glow brighter, or use a clear LED. The diffused ones make the whole thing glow with not much spotlight effect, but it is a bit dim.

      Reflective tape:

      http://www.homedepot.com/h_d1/N-5yc1v/R-100318556/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=reflective tape&storeId=10051

    • I put a RGB (clear) in like you mentioned could be done on your instructable. Feel free to link this there if you want.


  • This probably sounds like a really obvious question, but I have to be sure: If one were designing an enclosure for these in a CAD program, would one make the holes 28mm and assume the button will fit perfectly?

  • What do you guuys use to bore the mounting hole?

    • Something like this would be best IMO.

      • The (2 year old) link is dead. Do you have another link, or a generic name for the part/process you were recommending?

        • hum, no idea. It was probably just a hole-saw. something like this. the material depends though. if going into wood, plastic, etc, a hole saw should be fine. if thin metal, a punch is better.

  • While these guys are a bit more expensive then the 33mm convex ones sold here, they're actually a pretty good deal when you consider the fact that the microswitch included with them is over 3/4 the price. You're only paying $0.45 more for the nifty arcade button.

  • Are these switches momentary switches, or, um, what's the word... do they stay "on" until you click 'em again?

    • Trying to be nice about the post, but as the description suggests. They are momentary switches. I apologize if this was not in the description when you posted this comment.

Customer Reviews

5 out of 5

Based on 1 ratings:

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sturdy button

Worked great for my project. Would definitely buy again.