This calculator estimates the magnetic field strength at a specific distance from a rectangular magnet. It utilizes the fundamental principles of electromagnetism, converting the magnet’s field strength from Gauss to Tesla, calculating the magnetic dipole moment from the magnet’s dimensions and magnetization, and applying these values to derive the field strength at a chosen distance. This tool is particularly useful in applications where understanding the magnetic field’s intensity and distribution is crucial, such as in designing magnetic circuits, sensors, or motors.
Typical values of Br for disc magnet materials:
Ceramic 1 – 2200 | Ceramic 5 – 3300 | Ceramic 8 – 3250 | Alnico 5 – 12500 | Samarium 18 – 8600 | Samarium 24 – 9600 | Samarium 26 – 10600 | Samarium 32 – 11000 | NdFeB 35 – 12300 | NdFeB 39H – 13000 | NdFeB 42 – 13200 | NdFeB 45 – 13300 | NdFeB 48 – 13800
The table below highlights the range of magnetic sensors we have to offer and their specifications:
| Analog Magnetic Sensors | ||||
|---|---|---|---|---|
| Part Series | Linear Range | Typical Sensitivity(mV/V/Oe) | Maximum Operating Temperature (°C) | Saturation (Oe) |
| NVE AA Series | 1.5 to 450 | 3.6 to 0.1 | 125°C | 15 to 500 |
| NVE AAH Series | 0.6 to 7.5 | 15 to 4 | 150°C | 6 to 15 |
| NVE AAL Series | 1.5 to 10.5 | 3.5 | 125°C | 15 |
| NVE ALT Series | -100 to +100 | 2 | 125°C | 300 |
| NVE AAK Series | 400 to 2500 | 0.0033 | 85°C | 4000 |
| Digital Magnetic Sensors | ||||
|---|---|---|---|---|
| Part Series | Minimum Operate Point | Supply Voltage | Response | Maximum Operating Temperature (°C) |
| NVE AD Series | 1 mT | 4.5V to 30V | Normal (Omnipolar) | 125°C |
| NVE ADV Series | 0.4 mT | 4.5V to 30V | Bipolar | 125°C |
| NVE AFL Series | 0.4 mT | 0.9V to 5.5V | Normal (Omnipolar) | 85°C |
| NVE ADL Series | 2 mT | 2.4V to 4.2V | Normal (Omnipolar) | 125°C |
| NVE AHL Series | 1 mT | 0.9V to 2.4V | Normal (Omnipolar) | 85°C |
| NVE ADT Series | 1.5 mT | 2.4V to 4.2V | Normal (Omnipolar) | 85°C |
| NVE AHT Series | 1.5 mT | 0.9V to 1.8V | Normal (Omnipolar) | 85°C |
| Smart Magnetic Sensors | ||||
|---|---|---|---|---|
| Part Number | Field Range | Accuracy | Speed | Output |
| SM124-10E | 10 Oe (Omnipolar) | 5% | 10 kSps | I2C, Digital Threshold |
| SM225-10E | 150 Oe (Bipolar) | 2% | 15 kSps | SPI |
| SM324-10E | 20 Oe (Bipolar) | 0.3% | 300 Sps | I2C, Digital Threshold |
Users are hereby informed that Rhopoint accepts no responsibility for any inaccuracies or issues that may arise from the use of our online calculators. All data and results should be independently verified prior to their application in any projects or calculations.
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