The differential magneto resistor FP 412 D 250 is a magnetically variable resistor in D-type InSb/NiSb semiconductor material. The MR is glued onto a ferrite substrate and is supplied in a "MICROPACK" copper/polyimide film package. The basic resistance of each of the magneto resistors is 250 Ω. The series coupled MRs are actuated by an external magnetic field or can be biased by a permanent magnet and actuated by a soft iron target.

Features
• Accurate intercenter spacing
• High operating temperature range
• High output voltage
• Signal amplitude independent of speed
• Compact construction
• Available in strip form for automatic assembly

Typical applications
• Detection of speed
• Detection of position
• Detection of sense of rotation
• Angular encoders
• Linear position sensing