# Bobina NFC: The Ultimate Guide to NFC Coil Technology ## What is a Bobina NFC? A **Bobina NFC** (NFC Coil) is the fundamental inductive antenna component at the heart of any Near Field Communication (NFC) device. It is a precisely wound coil of wire, typically made of copper, that creates the oscillating magnetic field necessary for short-range wireless data transfer and power harvesting. My personal journey into RFID/NFC technology began over a decade ago, and I've always been fascinated by how this simple coil enables such secure and convenient interactions. I discovered a natural aptitude for understanding electromagnetic principles, which allowed me to quickly grasp the design intricacies of different **Bobina NFC** configurations. ### Technical Specifications and Parameters of a Standard Bobina NFC To design an effective NFC system, understanding the technical parameters of the **Bobina NFC** is crucial. Below are detailed specifications for a common 13.56 MHz NFC Forum compliant coil. *Please note: These technical parameters are for reference data only. For exact specifications for your project, you must contact backend management.* * **Operating Frequency:** 13.56 MHz (HF Band) * **Inductance (L):** 1.2 µH ±5% (Typical for many standard tags and readers) * **DC Resistance (Rdc):** Typically < 1.0 Ohm (for efficient Q factor) * **Quality Factor (Q):** 30 - 40 (Optimal range for power transfer and bandwidth) * **Resonant Capacitance (Cres):** ~110 pF (Tuned with the inductor to 13.56 MHz) * **Coil Geometry:** Square, rectangular, or circular. Common size: 25mm x 25mm. * **Number of Turns:** 4 turns (for a standard 25x25mm square antenna on FR4 substrate). * **Trace Width/Spacing:** 0.5 mm / 0.5 mm (Common in etched PCB antennas). * **Chip Connection:** Typically connected to an NFC IC like NXP's NTAG213 (Product Code: NT3H1101W0FHKH) or ST's ST25TA series. * **Substrate Material:** FR4, PET, PVC, or flexible PI (Polyimide). ## How a Bobina NFC Transforms Everyday Life ### Creative and Entertainment Applications The **Bobina NFC** isn't just for payment