Miniature TMR sensors with enhanced sensitivity and power efficiency

Littelfuse, Inc. has released its 54100 and 54140 miniature TMR effect sensors. These sensors provide unmatched sensitivity and power efficiency, revolutionising the magnetic sensing industry.

The key differentiator of the sensors is their sensitivity and 100x improvement in power efficiency compared to Hall Effect sensors. These sensors provide activation in the x-y plane instead of the conventional z-axis, supplying enhanced functionality. Also, they feature a wider operating temperature range of -40C to +100C, surpassing other solutions available.

The 54100 flange-mount sensor's compact housing dimensions measure 25.5mm x 11mm x 3mm, making it ideal for various applications. Its versatile case design permits for screw and adhesive mounting, ensuring easy installation. With a three-wire configuration (Power - Ground - Output) and digital output, this sensor can switch up to 5.5VDC and 3mA output current, delivering reliable and accurate results. The sensor leads offer flexibility, standard lead lengths of 300mm and 1000mm, and customisation options for high-volume production needs.

On the other hand, the 54140 flat pack sensor provides excellent performance in a compact package, measuring only 23mm x 14mm x 5.9mm. Like the 54100, it also offers digital output and is available as a three-wire sensor configuration with the same performance characteristics and customisation.

The sensors are ideal for applications in various markets, including appliances, home and building automation, and industrial sectors.

These Omnipolar TMR sensors are perfect for multiple functional applications, including position and limit sensing, RPM measurement, flow metering, communication of brushless DC motors, magnetic encoders, and angle sensing.

"The 54100 and 54140 Sensors broaden our Magnetic Sensing portfolio, providing the marketplace with improved sensitivity to meet numerous requirements," stated Julius Venckus, global product manager at Littelfuse. "The higher sensitivity enables designers to reduce overall sensing system cost with more compact magnetic actuators and helps to minimise power consumption for battery-powered applications."