Magnetic inductor WL1215

ferritewire-woundferrite core

Product Overview
A ferrite coil inductor antenna is a compact electromagnetic device designed to efficiently receive or transmit radio-frequency signals. It consists of a ferrite rod/core with a precision-wound copper coil. The ferrite material increases magnetic flux, improving inductance and sensitivity while enabling a smaller antenna footprint. Typical uses include RFID systems, AM radios, wireless sensor networks, smart utility meters, industrial equipment, medical electronics and IoT devices.

How it works
Electromagnetic waves induce a changing magnetic flux in the ferrite rod. The copper coil wound around the ferrite core converts this changing flux into a voltage according to Faraday's law. The ferrite core concentrates the magnetic field, increasing inductance and signal pickup. The induced signal is then transferred to the receiver circuit for amplification, filtering and processing.

Main Features

• High magnetic permeability ferrite core for concentrated magnetic flux and high inductance.
• Compact size and lightweight design suitable for constrained spaces.
• High receiving sensitivity and improved signal-to-noise ratio.
• Reduced electromagnetic interference in industrial environments.
• Customizable: ferrite material, number of turns, wire diameter, inductance and frequency of operation.
• Stable electrical parameters, long operational life and low power consumption.

Applications

• RFID readers and tags
• Smart meters and utility communication
• Industrial automation and wireless sensors
• IoT devices and wireless telemetry
• Automotive electronics (keyless entry, TPMS, comms modules)
• Medical monitoring and portable medical electronics
• AM radio receivers and low/medium frequency systems

Advantages & Disadvantages

• Advantages: compact size, high sensitivity, low EMI, low power consumption, easy OEM customization and consistent mass-production tolerances.
• Disadvantages: less effective at very high frequencies, possible ferrite saturation in very strong magnetic fields, mechanical fragility of ferrite cores if impacted, and the need for careful impedance matching and winding quality to avoid degraded performance.

Troubleshooting

• Measure inductance and DC resistance to detect coil damage.
• Inspect ferrite core for cracks or chips; damaged cores reduce magnetic performance.
• Verify solder joints and continuity of lead wires.
• Confirm operation in the intended frequency range and verify proper impedance matching to the RF circuit.
• Check for external EMI sources (motors, power supplies, nearby metal structures) that may degrade reception.
• Test Q factor and self-resonant behavior with appropriate instruments; low Q may indicate winding or material issues.
• Use prototype testing (LCR meter, network analyzer) before mass production.

Datasheet (selected table fields)
Item : Description
Ferrite Coil Inductor : Enameled copper wire
Wire Diameter : 0.2 mm (AWG options available)
Winding Type : Single-layer round or sectional winding
Core Material : Ferrite rod
Footprint length : 5 mm
Encapsulation : Optional varnish, epoxy or coating
Mounting : Through-foot / Custom

Electrical Specifications (Typical)
Parameter : Description
Inductance Range : 0.1 µH – 100 µH (customizable)
Inductance Tolerance : ±2%, ±5%, ±10%
DC Resistance (DCR) : Custom (per design)
Q Factor : High Q, optimized for frequency range
Self-Resonant Frequency : High, application-dependent
Operating Frequency : kHz to MHz range
Rated Current : Custom per design
Insulation Resistance : ≥100 MΩ

Note
These antennas are intended for low and medium frequency wireless applications where compact size, high sensitivity and immunity to interference are required. OEM/ODM customization is available to adapt electrical and mechanical parameters to specific application requirements.

Technical specifications

• Model designation: WL1215
• Ferrite core with enameled copper winding
• Inductance range: 0.1 µH to 100 µH (customizable)
• Inductance tolerances available: ±2%, ±5%, ±10%
• Wire diameter typical: 0.2 mm (AWG options available)
• Winding: single-layer round or sectional winding
• Operating frequency: from kHz up to MHz range (application-dependent)
• Insulation resistance: ≥100 MΩ
• Optional encapsulation: varnish, epoxy or coating
• Mounting options: through-foot or custom mounting