SMD Shields

SMD Type NiFe Soft Ferromagnetic Shield

SMD Shield-2.5modelSMD Shield-5model

Product Description

The SMD 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 SMD shield protects the sensor from parasitic magnetic fields caused by nearby conductors or other magnetic field sources.

The SMD shield can be assembled on top and bottom side of the PCB. The two diagonally placed leads assure the precise alignment with the underlying magnetic sensor and the components in its vicinity. Typically, the shield is assembled on the PCB with glue. However, a version with solderable pins is available on request.

PML collaborates for current sensor applications with Maglab GmbH (For design optimization & simulation) and Melexis GmbH (Qualified automotive sensor supplier).

Magnetic Characteristics

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 ºC

Sizes Available

Sizes Available
Product
Name
Length Height Thickness
inches [mm] inches [mm] inches [mm]
SMD 2.5 0.472 12 0.098 2.5 0.0137 0.35
SMD 5 0.315 8 0.197 5 0.0137 0.35

Geometry

SMD-shield-2.5geometrySMD-shield-5geometry

Material:

Standard version contains 48% Ni. Others on request.