U Shield

High-Performance Magnetic Shield for Planar Current Sensing Applications

Smarter Flux Control for Better Sensor Performance

The U-shaped soft ferromagnetic shield channels magnetic flux efficiently while reducing external interference for reliable, high-precision sensing.

Advanced Flux Concentration and Interference Blocking

The U Shield is a precision-engineered, soft ferromagnetic component designed to improve the performance of magnetic field sensors in planar current sensing applications. Our U Shield is made from high-permeability Mu-Metal (80% NiFe) to ensure your measurements are stable and precise.

Why use a U-Shield?

The U-shaped design is optimized for integration with magnetic sensors, such as Hall effect sensors, Anisotropic Magneto-Resistive (AMR) sensors and bus-bar conductors, by providing a low-reluctance path that channels and concentrates magnetic flux. It effectively blocks parasitic magnetic interference from nearby conductors or external sources while enhancing sensor sensitivity and providing high signal-to-offset ratio (SOR).

Technical Specifications

Magnetic Properties

Magnetic Characteristics of U-shields
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

Standard Sizes of U-shields

Standard Dimensions (in mm)

Standard Sizes of U-shields
Link	Part Name	Drawing No.	Width [mm]	Length [mm]	Height [mm]
Download	U12-13-12.5-0.8	C-SH-007-R1	12	13	12.5
Download	U12-13-12.5-1.5	C-SH-014-R2	12	13	12.5
Download	U12.5-10-12.5-1.5	Z-C-SH-168-R2	12.5	10	12.5
Download	U20-13-15-1.5	Z-C-SH-124-R2	20	13	15
Download	U20.5-10-12-1.5	Z-C-SH-180-R0	20.5	10	12
Download	U25-15-15-1.5	C-SH-009-R2	25	15	15

Note:

Custom dimensions are available on request.
For specific combinations of width and thickness, the length and height can be adjusted.
When sending an inquiry, please mention the part number and attach a reference PDF drawing, if available.

Key Features

High relative permeability for effective magnetic shielding

Low hysteresis for minimal signal distortion

Enhanced current sensing accuracy

Designed for integration with AMR and Hall sensors

Ideal for bus-bar based current measurement systems

Compatible with planar sensor configurations

Automotive-grade design support through partnerships

Applications

Planar current sensing systems

Hall effect and AMR sensor integration

Automotive current measurement modules

Power electronics and inverter systems

Industrial bus-bar current monitors

Smart metering and power diagnostics

Frequently Asked Questions

: It provides a low-reluctance magnetic path that channels and concentrates useful magnetic flux toward the sensor while blocking parasitic magnetic fields, resulting in better sensitivity, higher signal-to-offset ratio, and more accurate measurements.