The **MP1113-5-RX** is a specialized electronic component, typically identified as a **high-efficiency wireless power receiver coil/module**. It is frequently used in wireless charging applications (Qi standard or proprietary) where small form factors and precise inductance are required. --- ## 1. Core Technical Specifications The following table highlights the general characteristics typical of this component series: | Parameter | Typical Value | Unit | | :--- | :--- | :--- | | **Inductance (L)** | 11.3 | µH | | **Tolerance** | ±5% | - | | **DC Resistance (DCR)** | ~0.15 - 0.35 | Ω | | **Mounting Type** | Surface Mount / Adhesive | - | | **Application** | Wireless Power Transfer (RX) | - | --- ## 2. Key Component Breakdown ### A. The Magnetic Coil The heart of the MP1113-5-RX is a finely wound copper coil. - **Litz Wire:** It often uses multi-strand Litz wire to minimize the "Skin Effect," reducing power loss at high frequencies (typically 100-200 kHz). - **Inductance (11.3 µH):** This specific value is tuned to match the resonance frequency of a corresponding transmitter (TX) coil to ensure maximum energy transfer. ### B. Ferrite Shielding The coil is backed by a thin layer of **ferrite material**. This serves two critical purposes: 1. **Flux Concentration:** It directs the magnetic field lines toward the transmitter, improving coupling efficiency. 2. **EMI Protection:** It prevents the magnetic field from interfering with the internal electronics of the device (like a smartphone battery or PCB) located behind the coil. ### C. Physical Construction - **Ultra-Thin Design:** These parts are designed to be extremely low-profile (often <1mm thick) to fit inside compact wearable devices or slim electronics. - **Adhesive Backing:** Most versions come with a pressure-sensitive adhesive (PSA) for easy mounting to the interior of a device housing. --- ## 3. Typical Application Circuit When integrating the MP1113-5-RX into a system, it is usually connected to a Wireless Power Receiver IC (such as those made by TI, Renesas, or Semtech). ```mermaid graph LR A[TX Coil] -- Magnetic Flux -- B(MP1113-5-RX Coil) B --> C[Resonant Capacitors] C --> D[Bridge Rectifier] D --> E[Voltage Regulator/Charger IC] E --> F[Battery] ``` --- ## 4. Common Use Cases * **Wearables:** Smartwatches and fitness trackers. * **IoT Sensors:** Sealed sensors that require waterproof charging. * **Medical Devices:** Small portable diagnostic tools. * **Computer Peripherals:** Wireless mice or styluses.