The **CTSPMA4015F-R47M** is a high-current, shielded surface-mount (SMD) power inductor. It is designed for high-efficiency power conversion in compact electronic devices. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's physical and electrical characteristics: | Code Segment | Meaning | Details | | :--- | :--- | :--- | | **CTSPMA** | Series Name | Molded Power Inductor (Alloy Core) | | **4015** | Case Size | Approx. 4.0mm x 4.0mm x 1.5mm | | **F** | Lead-Free | RoHS Compliant / Green Material | | **R47** | Inductance Value | 0.47 µH (Microhenries) | | **M** | Tolerance | ±20% | --- ### 2. Technical Specifications Below are the typical electrical parameters for this specific part: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH | | **DC Resistance (DCR)** | ~10.0 mΩ (Typical) | | **Saturation Current (Isat)** | ~11.0 A to 13.0 A | | **Heat Rating Current (Irms)** | ~7.0 A to 8.5 A | | **Operating Temperature** | -55°C to +125°C | | **Construction** | Metal Alloy (Shielded) | --- ### 3. Key Electronic Features * **Molded Construction:** The coil is embedded in a magnetic metal powder. This design minimizes "acoustic noise" (buzzing) and provides excellent magnetic shielding to prevent Electromagnetic Interference (EMI). * **High Saturation Current:** Because it uses a metal alloy core rather than traditional ferrite, it handles high current spikes without a sudden drop in inductance (soft saturation). * **Low Profile:** At only 1.5mm in height, it is ideal for ultra-thin electronics like tablets and smartphones. * **Low DCR:** The low DC resistance ensures minimal energy loss as heat, increasing the overall efficiency of the power circuit. --- ### 4. Common Applications This inductor is primarily used in **DC-DC Converters** and **Voltage Regulator Modules (VRM)** for: 1. **Consumer Electronics:** Laptops, SSDs, and handheld gaming consoles. 2. **Telecommunications:** Network routers and base stations. 3. **Industrial:** High-density power supplies and LED drivers. ---