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 LU-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. Thanks to its laminated design it is suitable for high-speed applications.
Magnetic Characteristics
| Parameter | Material | Typical Value | Unit |
| Relative Permeability | Ni-Fe Si-Fe |
100.000 40.000 |
a.u. |
| Initial Relative Permeability | Ni-Fe Si-Fe |
7000 2500 |
a.u. |
| Saturation Flux Density | Ni-Fe Si-Fe |
1 1.5 |
T |
| Hysteresis | Ni-Fe Si-Fe |
2.8 n/a |
A/m |
| Curie Temperature | Ni-Fe Si-Fe |
450 700 |
°C |
Geometry LU-shield-W-L-H-T
W: Width
L: Length
H: Height
T: Thickness
| Material Specifications | Laminations | Ni or Si content |
| Laminations and Nickel content | 0.5mm | 48% (Ni) |
| Laminations and Silicon content | 0.5mm | <3.5% (Si) |
Available Standard Geometries*
| Order Code | W | L | H | T | Type² |
| LU15-8-15-3-NiFe | 15 | 8 | 15 | 3 | Ni-Fe |
| LU15-8-15-3-SiFe | 15 | 8 | 15 | 3 | Si-Fe |
| LU15-13-15-3-NiFe | 15 | 13 | 15 | 3 | Ni-Fe |
| LU15-13-15-3-SiFe | 15 | 13 | 15 | 3 | Si-Fe |
| LU20-8-15-3-NiFe | 20 | 8 | 15 | 3 | Ni-Fe |
| LU20-8-15-3-SiFe | 20 | 8 | 15 | 3 | Si-Fe |
| LU20-13-15-3-NiFe | 20 | 13 | 15 | 3 | Ni-Fe |
| LU20-13-15-3-SiFe | 20 | 13 | 15 | 3 | Si-Fe |
| LU25-8-18-3-NiFe | 25 | 8 | 18 | 3 | Ni-Fe |
| LU25-8-18-3-SiFe | 25 | 8 | 18 | 3 | Si-Fe |
| LU25-13-18-3-NiFe | 25 | 13 | 18 | 3 | Ni-Fe |
| LU25-13-18-3-SiFe | 25 | 13 | 18 | 3 | Si-Fe |
*other geometries on request
²all shield models are available with Ni-Fe or Si-Fe material
Geometry LU15-8-15-3
Geometry LU15-13-15-3
Geometry LU20-8-15-3
Geometry LU20-13-15-3
Geometry LU25-8-18-3
Geometry LU25-13-18-3
