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Neodymium Disc Magnet 6x3mm – For Hall Sensors and Reed Switches to Pinterest (opens in a new window)
Neodymium Disc Magnet 6x3mm - For Hall Sensors and Reed Switches

Neodymium Disc Magnet 6x3mm – For Hall Sensors and Reed Switches

$0.46 incl. gst

SKU: CLICK-IT-652424 Category:

Verified specifications

Brand
NZN Electronics

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Description

A 6 mm diameter, 3 mm thick nickel-plated neodymium disc magnet, sold individually with a minimum of 5. It is the size most people use to trigger a Hall effect sensor or a reed switch: small enough to glue into a door, lid, wheel or 3D printed part, and strong enough to switch an A3144 or OH137 from around 5 mm away. The poles are on the two flat faces.

Specifications

Size6 mm diameter x 3 mm thick
ShapeSolid disc, flat faces, no hole
MaterialNeodymium (NdFeB)
FinishNickel plated, bright silver
PolesOn the flat faces, one north, one south
Working temperatureKeep below 80°C
Sold asPriced per magnet
Minimum order5 magnets
WeightAbout 0.6 g each

What’s in the box

1×
6 x 3 mm neodymium disc magnet

Price is per magnet, minimum 5. They ship stacked together in a clear bag. NZ stock, dispatched within 24 hours.

Great for

Triggering an A3144 or OH137 Hall switch
Closing a reed switch for a door, gate or lid sensor
Counting wheel or shaft turns for RPM and speed readings
Position sensing with a 49E or AH3503 linear sensor
Pressing into a 3D printed part for a magnetic lid or catch
Holding covers, panels and jigs in place in a project enclosure

Wiring & getting started

  1. Find the face that switches your sensor

    Unipolar Hall switches such as the A3144 and OH137 only respond to a south pole facing their printed side. If nothing happens, flip the magnet over. Mark the working face with a pen before you glue it in.

  2. Keep the gap small and face on

    The field drops off quickly with distance. Point a flat face straight at the sensor and expect an A3144 to switch at roughly 5 mm. For a 41F or US1881 latch, mount two magnets with opposite faces out, one to set and one to reset.

  3. Mount it with glue, not heat

    For a 3D print, design a hole about 6.2 mm across and 3.2 mm deep, then tune it for your printer. Hold the magnet in with a drop of superglue or epoxy. Do not solder, drill or grind it.

  4. Slide them apart

    To take one off the stack, slide it sideways off the end rather than pulling it straight off.

Note: Keep these magnets away from children. Swallowing two or more can cause serious internal injury, so get medical help straight away if it happens. They snap together hard enough to pinch skin and can chip if they collide. Keep them away from pacemakers and other implanted medical devices.

Additional information

Brand

NZN Electronics

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