The **CTMPC080604F-R56M** is a high-current, shielded power inductor typically used in DC-DC converter applications. It belongs to the category of **Molded Power Inductors**, which are known for their compact size and excellent magnetic shielding. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **CTMPC** | Series Prefix | High-current molded power inductor series | | **080604** | Case Size | Dimensions (approx. 2.0 x 1.6 x 1.0 mm) | | **F** | Lead-Free | RoHS compliant / Environmental standard | | **R56** | Inductance Value | **0.56 µH** (R denotes the decimal point) | | **M** | Tolerance | **±20%** | --- ### 2. Key Technical Specifications Based on standard datasheets for this series, here are the typical electrical parameters: * **Inductance:** 0.56 µH * **DC Resistance (DCR):** Low resistance (usually in the range of 15-25 mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** High current handling capability before inductance drops by 30%. * **Rated Current ($I_{rms}$):** The continuous current allowed based on a specific temperature rise (usually 40°C). * **Operating Temperature:** Typically -40°C to +125°C. --- ### 3. Construction and Features 1. **Molded Body:** The inductor is constructed by molding a metal alloy powder around the copper coil. This creates a solid block that is structurally robust. 2. **Magnetic Shielding:** Because the magnetic material surrounds the coil entirely, it offers inherent EMI (Electromagnetic Interference) shielding. 3. **Soft Saturation:** Unlike ferrite inductors that drop inductance sharply, molded inductors have a "soft" saturation curve, making them more stable under high-load transients. 4. **Low Profile:** The "04" in the size indicates a very thin height (approx 1.0mm), ideal for smartphones and portable electronics. --- ### 4. Common Applications * **Voltage Regulator Modules (VRM):** Used in CPUs and GPUs. * **DC/DC Converters:** Point-of-Load (POL) power supplies. * **Portable Electronics:** Tablets, smartphones, and SSDs where space is premium. * **Battery Powered Devices:** High efficiency due to low DCR helps extend battery life.