Description
The U-Shield is a soft ferromagnetic shield featuring superior material characteristics such as high linearity and very low hysteresis.
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 U-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
| Material Specifications | U-Shield-W-L-H-[T] | -[Ni]-¹ (%) |
| Standard thickness: 0.8mm / 48% Ni | T=0.8 | Ni=48 |
| Other thickness options 0.35/0.5/1/1.2/1.5 mm | T=… | Ni=… |
Order Codes: U-Shield – Width – Length – Height – Thickness (– Ni)
| U-Shield (order code example) | -[W]- | -[L]- | -[H]- | -[T]- |
| U-Shield-12-13-12,5-0.8 (standard) | W=12 | L=13 | H=12.5 | T=0.8 |
¹ Standard version contains 48% Ni; others on request