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AKM 소개
What makes AKM different?
For over 40 years, our trusted technology has supported people's livelihoods
Hall Sensors
In 1974, Asahi Kasei Microdevices Corporation (AKM) began developing sensors for automotive airbags, marking the first step in the evolution of the Hall sensor technology. We have continued to advance to meet the needs of the age, starting full-scale operations in the 1980s. Since then, we have shipped over 50 billion Hall sensors.
Today, AKM's Hall sensors are used in various products that support our daily living, such as air conditioners, washing machines, and smartphones. AKM's Hall sensors support our comfortable and convenient living where the sensors cannot be seen.
Technology at Work in Invisible Places
A Hall sensor is a magnetic sensor that detects magnetic fields (flux density). Specifically, it utilizes a Hall effect to detect magnetic fields and convert them into electrical signals. This technology is indispensable for precision control and is utilized in air conditioners, home appliances, automotive systems, and smart devices.
The Hall sensors developed by AKM are required to have high sensitivity, fast response, and excellent resistance to temperature changes. To achieve this, we have leveraged our extensive experience and technical expertise to develop cutting-edge products.
Hall Sensors
High-Precision and Stability Built with MBE Technology
As a core of AKM's technology, there is the advanced production technique of compound semiconductors using Molecular Beam Epitaxy (MBE) equipment. The distinctive feature of this technology is the ability to stably produce high-precision products by stacking each layer at the atomic level. Even in the film formation process, which is susceptible to temperature and environmental variations, this technology achieves high precision by maintaining the optimal conditions through AKM's long-standing knowledge and experience.
Our products, though mass-produced, are produced with the spirit of craftsmanship and are trusted for a variety of applications.
MBE equipment
Trust and Customer Support, which are the Unique Features of Japanese Companies
AKM provides thoughtful customer support as the common feature among Japanese companies. With product warranties and analytical support, AKM's Hall sensors are used across a wide range of fields from home appliances to industrial and automotive equipment. Our Hall sensors play crucial roles in detecting motor rotation, stabilizing cameras, autofocusing, and current sensing, thereby enhancing the comfort of everyday life.
Hall Sensor Lineup and Application Examples
High Sensitivity and Reliability Achieved by AKM's Technology
One of the technological strengths of AKM's Hall sensors lies in the materials used in the sensor components. By using compound semiconductors such as indium antimonide (InSb), gallium arsenide (GaAs), and indium arsenide (InAs), we significantly enhance the performance characteristics of the sensors. The selection of these materials allows AKM's Hall sensors to deliver high performance across various applications.
Hall Elements
Hall elements are analog sensors that directly output the voltage generated by the Hall effect.
HW Series (InSb)
Features : Extremely high sensitivity, ideal for applications that require detection of precise magnetic field changes, such as motor rotation detection. Applications: Detection of rotations of various types of motors that are commonly used (e.g., DC brushless motors like fan motors).
HG Series (GaAs)
Features : Excellent temperature characteristics and maintains stable linearity even in high magnetic field environments. It is suitable for the applications requiring delicate control, such as camera stabilization and autofocus. Applications: Precise detection of magnet position (examples: camera stabilization/autofocus/aperture/zoom, etc.)
HQ Series (InAs)
Features : Balanced sensitivity and temperature characteristics, making it ideal for applications requiring more precise magnetic field detection. Applications: Precise detection of magnet position (examples: camera stabilization/autofocus/aperture/zoom), suitable for applications requiring higher sensitivity than HG products.
Power Tools
Home Appliances
Hall ICs
The HW series Hall ICs convert Hall voltage to High/Low digital output, facilitating various sensing applications.
EW Series
Features : Fast response, easy circuit design
Applications : Detecting motor rotation and proximity of magnets (e.g., home positioning), used in power tools, flow meters, valve operations, etc.
Linear Hall ICs
The HQ series Linear Hall ICs amplify the Hall voltage for output, enhancing measurement capabilities.
EQ Series
Features : Fast response, variable sensitivity, easy circuit design
Applications : Precise measurement of magnet positions, used in home appliances, fuel tank level detection, and low-speed motors, etc.
Download Product Catalog
Please view our comprehensive catalog, which covers everything from operating principles to application examples and the complete product lineup. This catalog includes:
- Operating principles and driving methods
- Materials and characteristics of Hall sensor elements
- Application examples
- Usage precautions
- Reliability of Hall sensors
- Product lineup
(Hall Elements, Hall ICs, Linear Hall ICs) - Glossary of terms
Hall Sensors Catalog
Please download the catalog using the form below.
Hall Sensors Product Guide
English [hall-sensors-product-guide-en.pdf]
( 194 Pages PDF: 21.5MB)
Please fill in the following form and send it to us.
A URL for downloading will be sent to your registered email address.
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