MG Series Magnets
The MG Series magnets offered by Honeywell Sensing and Control includes several bar magnets in various
sizes and strengths for actuating Hall-effect and magnetoresistive sensor ICs. These bar magnets are for
use in sensors with unipolar or omnipolar magnetic characteristics.
Made from different magnetic materials and available in a variety of sizes and shapes, the MG Series
magnets can be used for evaluation and design of magnetic systems, and in numerous potential
applications across a variety of different industries. Some of these magnets are offered with threaded
bushings for easy installation and have a good resistance to demagnetization which could be caused by
magnetic shock. These magnets are designed to provide minimum magnetic fields at a specified distance
to help system designers match the appropriate magnet to their requirements.
Value to the Customer
Variety of sizes, shapes, and packaging options
to choose from
The MG Series consists of a range of magnets based on varying
dimensions and packaging types to help customers identify the
most appropriate magnet that can be used to evaluate Honeywell’s
Hall-effect and magnetoresistive sensor ICs in their applications.
DID YOU KNOW?
Magnetic sensing characteristics of Hall-effect sensor ICs are specified within
particular ranges.
For example, assume an application with a temperature range of -40 °C to 125 °C
[-40 °F to 257 °F] using an SS443A. The operate point may be up to 215 Gauss [21.5 mT]
and the release point may be 60 Gauss to 190 Gauss [6.0 mT to 19.0 mT]. To ensure
reliable operation, at least 215 Gauss [21.5 mT] must be presented to the sensor. For a
robust activation, the flux from the magnet at the maximum operating gap should be 20
% to 100 % higher than the sensor’s maximum operating point over temperature. The
Gauss level must then be reduced below 60 Gauss [6.0 mT] to ensure that the sensor will
release.
Therefore, it is necessary to know the flux density (Gauss) measured at the chip to be
able to:
• Select a device with the best magnetic characteristics for the application
• Select the best magnet
• Verify the desired mechanical characteristics
COMPACT SIZE • WIDE RANGE • VARIETY OF SHAPES
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