TDK Flexield™ Magnetic Shielding Sheet for RFID & NFC

Model: IFL04-050NB1HRX300Type: High-Q Low-Loss Magnetic Shielding Material for RFID & NFC (Flexible Ferrite/Resin Composite Sheet)Form: Roll type with release liner, die-cuttable

2) Electromagnetic Characteristics (13.56 MHz, mainstream frequency for NFC/RFID)

Permeability μ': High (Typical ≥ 150)Magnetic Loss μ": Extremely low (Low loss, high Q factor)Q Factor: High, improves antenna efficiencyShielding Performance: Reduces magnetic field attenuation caused by metal backing and isolates metal interferenceOperating Frequency: 13.56 MHz (Compatible with NFC and HF-RFID)

3) Electrical & Thermal Properties

Surface Resistivity: ≥ 10 MΩ/sq (Insulating)Thermal Conductivity: ≈ 1.5 W/(m·K)Operating Temperature: -20 ℃ ~ +80 ℃Temperature Resistance: Withstands SMT reflow soldering (Peak temperature 260 ℃ for 10 seconds, short duration)

4) Packaging & Specifications

Packaging: 300 mm × 100 m roll with protective filmMinimum Order Quantity: 1 roll (100 m)Processing: Available for die cutting, punching and adhesive lamination

Application Scope

1) NFC Devices (Primary Application)

Antenna shielding for smartphones, NFC bracelets and NFC earphonesApplied to smart cards and NFC tags: Isolates metal housings to extend reading distanceApplied to NFC reader/writer antennas: Enhances sensitivity and resists metal interference

2) HF-Band RFID (13.56 MHz)

Asset management tags, library tags and medical tagsRFID tags mounted on metal surfaces: Solves reading failure caused by metal shielding

3) Low-Power Wireless Charging

Shielding for transmitter and receiver of wireless chargers (5 W and below)Prevents magnetic field from interfering with metallic components on mainboard and improves charging efficiency

4) IoT & Wearable Devices

Antenna optimization for Bluetooth Beacons and asset trackers inside metal enclosuresMagnetic isolation for smart watches and TWS earphones in compact spaces

5) Industrial & Medical Equipment

Communication antennas for industrial sensors and handheld devices with metal housingsMedical monitoring devices: Features safe insulation and zero magnetic leakage