First automated test system for 3D magnetic sensors for automotive and industrial

First automated test system for 3D magnetic sensors for automotive and industrial

New Products |
By Nick Flaherty

The equipment is based on Hprobe’s 3D magnetic field generator technology for single and multi-site testing at wafer-level, under magnetic field. Operating with automated wafer probing stations and external electrical testers, it offers significant throughput performances, with high flexibility, and compatibility with end-user existing platforms.

Grenoble-based Hprobe is a spin-off from the SPINTEC spintronics research lab and designs, manufactures, and markets equipment for wafer-level testing of magnetic devices in the semiconductor industry.

“Our new equipment addresses the crucial step of chip sorting for the new generation of magnetic sensors tested at wafer-level, under high field intensity, and on a large area coverage. It offers fully controllable 3D static and variable magnetic field capability allowing the use of a single platform to test different types of products,” said Siamak Salimy, founder and CTO of Hprobe. “This is key for our customers and a major milestone for the industry as evidenced by orders already received from a number of major sensor manufacturers,” he added.

Magnetic sensors are used for various automotive and industrial applications to sense physical parameters using a magnetic field and to transmit an electrical response for further process. To validate products for end applications, it is required to test the magnetic sensors under a magnetic field. The outcome of the measurement is data related to the motion of a part or sensing of a current flowing. The sensors are used to extract positioning, angular, strength, and direction information.

The system consists of a test head with a robotized 3D magnetic generator, which includes a field calibration and monitoring system. It is built for interfacing with an already available electrical tester or provided with a full tester as a turnkey solution. It comes with dedicated software for customers to implement their own tests and to generate a custom 3D magnetic field pattern. A wide range of field configurations is available.

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