Mini Pushbutton Switch - SMD

Miniature surface mount momentary button. These are great, low-profile momentary switches. Perfect as a tactile reset switch. Rated up to 50mA.

Documents:

Mini Pushbutton Switch - SMD Product Help and Resources

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: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

3 Soldering

Skill Level: Competent - You will encounter surface mount components and basic SMD soldering techniques are required.
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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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Customer Comments

  • Incase anyone needs it, Ive found a different manufacturer (stocked at DigiKey and Mouser) who makes this identical button.
    Datasheet:
    http://www.ck-components.com/index.php?module=media&action=Display&cmpref=14407

    • Thank you, these are hard to find in quantity.

      • Thanks for the link. FYI, they are still available; P/N: 611-PTS525SM10-LFS for Mouser and CKN9104CT-ND for Digikey.

    • Also similar to Alps SKQG (stocked at Mouser, not Digikey). The SKQG performs excellently. Spec’d for 100 000 operations, but I tested them for 200 000 and they still did well with 30ms software debouncing. Unfortunately I forgot to measure the actual bounce times after the 200 000 switches at the time. Be sure to place a small cap in parallel with the switch to keep the contacts clean.

  • Aren’t thes the ones Sparkfun uses on the RedBoard?

  • Is there an Eagle library entry for this one? I looked in the latest library but I could not match this to anything I found. Thanks

    • Okay, looks to be TACTILE_SWITCH_SMD/TAC_SWITCHSMD That’s based on the comment below that sad this is the same button as on the Arduino Pro Mini

  • Does this switch have two separate lines that are connected by the switch? In other words, if I use this switch to control whether or not two components are grounded, are the two components isolated when the switch isn’t pressed? Thanks!

  • Would be nice if the description mentioned the exact name of the part in the Eagle library. I can’t figure out a way to match them other than by looking at the part footprint to make sure it’s the same. Any better suggestions?

  • would these work well for building a micro-keyboard?

  • This part is present on Ebay with the keyword:
    “SMD Tactile Push Touch Switch Key Button"
    It’s for big quantity ! ;)

  • These look just like the ones on the Arduino Pro/Pro Mini!

  • Does the supplier that you get your knobs and stuff from supply D-pads? If so I think it would be great to make a D-pad break out board with this SMD switch.
    Just a thought.

  • I used these buttons for my project for user input, unfortunately I have found a 75% failure rate with these. How frustrating!!

Customer Reviews

5 out of 5

Based on 3 ratings:

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Favorite button

These are my go-to button for many projects. They are high quality, have an excellent click with a great feedback feel. They are small and sturdy.

Highly useful SMD switch for any small application

This is a great multipurpose switch. It’s easy to solder onto a PCB, and the size is perfect for small applications. I suggest downloading the SparkFun parts library to put this switch into your CAD sketch.