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Magnet Ring - 3/16"

These are small rare earth magnets - 3/16" rings. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curiously strong and make for a great way to attach tools to a metal workbench, hold small children to a fridge, and as a trigger for reed switches. This one small ring can easily hold a piece of paper to your fridge.

We found these small rings to be very useful for connecting PCBs together. These rings are conductive and can act as a magnetic connector between widgets. You need a way to secure the ring to the PCB (screws and rivets have been shown to work).

Sold in single units.

Features:

  • Dimensions: 3/16" od x 1/16" id x 1/16" thick
  • Tolerances: ±0.002" x ±0.002" x ±0.002"
  • Material: NdFeB, Grade N42
  • Plating/Coating: Ni-Cu-Ni (Nickel)
  • Magnetization Direction: Axial (Poles on Flat Ends)
  • Weight: 0.00665 oz. (0.189 g)
  • Pull Force: 1.48 lbs!
  • Surface Field: 2275 Gauss
  • Brmax: 13,200 Gauss
  • BHmax: 42 MGOe

Comments

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  • ... These are small rare earth magnets - 3/16" rings. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curiously strong and make for a great way to attach tools to a metal workbench, hold small children to a fridge,

    wait a minute...

    hold small children to a fridge,

    hmmmmm. Do I really need these magnets?

  • I saw on one of the other magnets you sell, that it had to be within 3cm to trip a reed switch. What is the distance to trip the same switch with this magnet?

  • http://www.kjmagnetics.com/products.asp?cat=16
    If you're getting more than a few, its probably worth the extra shipping to buy from them.
    Sorry SF :(. Still great if you only need a few ;-)

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