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


The shield is designed for PCB-based planar current sensing in combination with a magnetic field sensor, i.e., Hall sensor, AMR sensor and a current conductor. The UCR-shields 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


(all dimensions: mm)

Material Specifications UCR3.5-[T] -[Ni]-¹ (%)
Standard thickness: 0.8 mm / 48% Ni T=0.8 Ni=48
Other thickness options 0.35/0.5/1/1.2 mm (on request) T=… Ni=…

(all dimensions: mm)

Material Specifications UCR5.5-[T] -[Ni]-¹ (%)
Standard thickness: 0.5 mm / 48% Ni T=0.5 Ni=48
Other thickness options 0.5/0.8/1/1.2 mm (on request) T=… Ni=…

¹ Standard version contains 48% Ni; others on request