Honeywell 101MG7 HCS Magnetics Alnico VIII Magnet Explained
The Honeywell 101MG7 HCS Magnetics magnet is a compact cylindrical actuator developed for magnetic sensing designs that need a stronger field profile than many miniature magnets can provide. Although it is physically small, its performance profile makes it highly relevant for engineers working with Hall-effect sensors, magnetoresistive devices, and compact detection assemblies. The part sits in a useful middle ground: small enough for dense layouts, yet strong enough to support dependable actuation over practical working gaps.
Honeywell lists the Honeywell 101MG7 HCS Magnetics model as an Alnico VIII sintered cylindrical magnet. Its dimensions are approximately 6.35 mm long by 6.35 mm diameter, and the north pole is indicated with red for easier identification. In application engineering, that combination is meaningful because the part offers a neat cylindrical package with a magnetic output profile that compares favorably against more modest compact magnets. For additional product-family context, more information about Honeywell can be found here.
Technical Profile of Honeywell 101MG7 HCS Magnetics
The typical gauss data published by Honeywell shows why this magnet remains popular in technical searches. The Honeywell 101MG7 HCS Magnetics Alnico VIII magnet provides around 1050 G at 0.25 mm, 900 G at 0.76 mm, 755 G at 1.27 mm, 470 G at 2.54 mm, 295 G at 3.81 mm, and 195 G at 5.08 mm. That field profile makes it suitable for designers who want compact dimensions without giving up too much sensing margin.
Honeywell also identifies the part with an operating stability range of approximately -40°C to 250°C. For many embedded systems and industrial platforms, that is a valuable specification because it supports thermal resilience in environments that can be far more demanding than room-temperature lab conditions.
Why the 101MG7 Format Is So Practical
A magnet like the Honeywell 101MG7 HCS Magnetics cylindrical magnet works well because its geometry is easy to install. Cylindrical parts are often simpler to mount into drilled plastic, molded pockets, or compact carriers. In assemblies where manufacturing repeatability matters, that can reduce handling errors and help standardize orientation.
The use of Alnico VIII is another reason the part draws attention. Engineers searching for Honeywell 101MG7 HCS Magnetics, Alnico VIII sensor magnet, or compact magnetic actuator for Hall sensors are usually looking for a part that combines dependable magnetic behavior with a manageable package size. This model fits that requirement well.
Common Application Scenarios
The Honeywell 101MG7 HCS Magnetics part is often evaluated for door and cover state detection, compact position sensing, travel-limit monitoring, and single-point motion indication. It can also support prototype work in systems where sensor triggering needs to be mapped at different air gaps before the final mechanical design is frozen.
Because the magnet is relatively small, it is especially useful in products where internal space is limited. That includes portable equipment, compact industrial controls, medical carts, fitness equipment, and specialty electronics enclosures. In many such applications, the challenge is not only creating a detectable magnetic field. The challenge is doing so within a constrained package. That is where the Honeywell 101MG7 HCS Magnetics Alnico VIII magnet becomes appealing.
Selection and Integration Best Practices
Even with solid reference data, engineers should still validate the magnet in the full product assembly. Real-world switching performance depends on sensor operate point, travel direction, mechanical stop locations, air-gap consistency, and nearby materials. A compact cylindrical magnet may perform exceptionally well in one bracket design and very differently in another if metal parts or dimensional tolerances alter the magnetic path.
Orientation remains important too. Since Honeywell marks the north pole in red, it becomes easier to maintain process consistency from prototype to production. That simple visual cue can prevent assembly mistakes and shorten troubleshooting during commissioning or maintenance.
FAQ About Honeywell 101MG7 HCS Magnetics
What type of magnet is Honeywell 101MG7 HCS Magnetics?
The Honeywell 101MG7 HCS Magnetics part is an Alnico VIII sintered cylindrical magnet used as an actuator for Hall-effect and magnetoresistive sensing systems.
What are the dimensions of Honeywell 101MG7?
The part measures approximately 6.35 mm in length and 6.35 mm in diameter. Its compact cylindrical format makes it easy to integrate into small housings and custom mechanical assemblies.
How strong is the Honeywell 101MG7 magnet?
Honeywell publishes typical gauss values of about 1050 G at 0.25 mm, with decreasing strength as distance increases. These values are very useful for estimating performance during design and evaluation, though final switching depends on the selected sensor and installation geometry.
Is Honeywell 101MG7 suitable for industrial temperature ranges?
Yes. The magnet is listed with a stability range of approximately -40°C to 250°C, which supports use in many industrial and equipment-control environments.
Why is Honeywell 101MG7 often chosen for compact sensing designs?
It offers a strong balance of size, field strength, and thermal capability. That makes the Honeywell 101MG7 HCS Magnetics magnet especially attractive where designers need a compact magnetic actuator without sacrificing too much sensing margin.