The R-Shield is a soft ferromagnetic shield featuring superior material characteristics such as high linearity and very low hysteresis.

Description

The shield is designed for planar current sensing in combination with a magnetic field sensor, i.e., Hall sensor, AMR sensor and a busbar conductor. The R-Shield protects the sensor from parasitic magnetic fields caused by nearby conductors or other magnetic field sources while at the same time it enhances sensitivity and signal-to-offset ratio of the sensor.

Magnetic Characteristics

Parameter Typical Value Unit
Relative Permeability 100.000 a.u.
Initial Relative Permeability 7000 a.u.
Saturation Flux Density 1 T
Hysteresis 2.8 A/m
Curie Temperature 450 degC

Geometry

(all dimensions: mm)

Material Specifications R-Shield-…-[T] -[Ni]-¹ (%)
Standard thickness: 0.8mm / 48% Ni T=0.8 Ni=48
Other thickness options 0.35/0.5/1/1.2 mm T=… Ni=…

 


¹ Standard version contains 48% Ni; others on request