High Permeability Magnetic Shielding Sheet

Minoru Co., Ltd. in Japan develop and manufacture High Permeability Magnetic Shielding sheet. Many modern electrical applications are very sensitive to Electromagnetic Interference (EMI). Higher frequency interference is usually recognized and shielded by conductive materials. However, low frequency interference and noise emitted from nearby electronic devises are overlooked or unsure the cause of problems. Because this low frequency interference is easily through these conductive layers. Miroru Emasfalis® LFS (Low Frequency Shielding Material) is a low-profile high μ shield materials especially developed for effective low frequency magnetic shield within the confined space.

High μ Shield
  • Excellent Low Frequency/Magnetic Shield characteristics
  • Approximately 10x the shielding power of iron sheet at the same thickness
  • Light weight compared to Iron/Permalloy
  • No grounding connection required for flexible design
  • Ultra thin material: 0.03mm, 0.05mm, and 0.10mm

LFS Series Permeability and Characteristics

  • Typical Permeability (μ’@150kHz): 11000
  • Typical Permeability (μ”@150kHz): 6000
  • Resistivity (uΩm): 1.15
  • Magnetic Flux Density (T): 1.4
  • Operating Temperature Range: -40ºC to 150ºC

Excellent Shielding Effectiveness

Note: The above technical information and data should be considered as representative and reference of typical data only

High μ Shield Structure and Specifications

High μ Shield Structure

Common Specifications (LFS30)

  • Black Protective Film Thickness: 5um
  • High μ Magnetic Layer Thickness: 15um
  • Double Sided PSA Thickness: 10um
  • Total Thickness: 30um +/-25%


Since using Minoru’s high permeable magnetic material and simple structure, LFS series achieve ultra thin shielding sheet. LFS30 has total 30um, LFS50 has total 50um, and LFS100 has total 100um thickness. As a result, LFS series are flexible design and suitable for various applications such as Hall Sensor and Flux gate, Hearing Aid Compatibility (HAC), Quick Battery Charger, High Fidelity Audio System, and MRI and Medical equipment.

Please feel free to contact us for more detail. Minoru also provides custom and semi-custom solutions to meet your requirement.