Mini Pushbutton Switch - Tall

Miniature Single Pole Single Throw switches. These are high quality Omron type B3F momentary on switches. This switch has a very large 10mm tall button. Perfect as an embedded switch behind an enclosure wall. Rated up to 50mA.

Mini Pushbutton Switch - Tall Product Help and Resources

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: 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.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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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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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.

  • Because of its small footprint and tall shaft, this button spared my project from having to devise separate actuator mechanisms to extend each button up through a panel. (my project uses 8 of these, very closely spaced). But I have observed that the mechanism is somewhat delicate. These buttons can easily be compromised mechanically or rendered unusable with too much lateral pressure. Trust me, this can easily happen by accident during testing, handling, or while soldering additional components. Needless to say, replacing a switch already soldered into a PCB is a pain.

    Of course, once your final assembly is mounted so that the shafts pass through holes in your panel, they are protected from lateral motion. But in the mean time I strongly recommend making a kind of temporary front panel to protect a PCB assembly using these buttons. A spare piece of PC board with 1/8" drill holes (for the button shafts), mounted with 3/8" spacers works perfectly, providing a neat 3/32" of button shaft access for operation.

  • charliex / about 13 years ago / 2

    Reasonably sure this is it.

  • jny / about 12 years ago / 1

    has anyone tried to mount a knob on these? I'm in need of a switch that is able to mount a knob on top (w/ set screw).. like a encoder w/ switch.. just no encoder..

  • Nakor / about 13 years ago / 1

    I pulled a bunch of these out of an old VCR (or at least very similar). The ones I salvage kind of suck because they are so old but the button is nice and long and the click is nice (on the better ones that I salvaged). Really useful for some projects.

  • Digikey EG1865-ND, if you're looking to move to production with your design. charliex's datasheet looks right.

  • tponzi / about 14 years ago / 1

    The pictures with ruler are not correct! The part is appr. 6mm wide not 12mm or 1/2 an inch. I found out the hard way after designing a pcb (not Eagle) with this part, and figuring out hole placement from photos. Wish you had a datasheet for reference.

    • Atan3 / about 14 years ago / 1

      Thank you very much for that info man, saved a poorly designed circuit dimensioned for 12mm instead of 6mm...

  • Rowan2 / about 15 years ago / 1

    I couldn't find this part in the SF eagle library.
    Is there a datasheet for this part?

    • It looks like this switch has the same footprint as the one with the the ~2mm button. They are under TAC_SWITCH in the library. It would be nice if there were more SFE product numbers in the descriptions.

  • Woody / about 15 years ago / 1

    Single Pull? Do you mean "Single Pole"?

    • Mark D. / about 13 years ago / 1

      No, it's supposed to be "Pull".

      • WizenedEE / about 12 years ago / 2

        Actually, Woody is correct. You're thinking of "throw"

Customer Reviews

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1 of 2 found this helpful:

works well. Some cautions advised

Switch provides solid electrical contact and good tactile feel to confirm closure. Two issues to be aware of. Mechanically the switch does not have any side to side support, and can be damaged by pressing at an angle. So if you use these you'll want to make sure you pass them through a stationary hole in your enclosure that is well matched to the diameter of the shaft, minimizing lateral movement. Second, the plastic the base is made of is pretty easily melted. So when you solder them onto your PCB, do it quickly. If you need to remove it you'll need a rework station (hot air), and even then it may be damaged in the process.