The **CDMC6D28NP-R47MC** is a high-performance, surface-mount (SMD) power inductor manufactured by **Sumida**. It belongs to the CDMC series, which is specifically designed for high-current applications where space-saving and high efficiency are critical. --- ### 1. Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% (M) | | **DC Resistance (DCR)** | 4.80 mΩ (Typical) / 6.00 mΩ (Max) | | **Saturation Current (Isat)** | ~17.5 A | | **Temperature Rise Current (Irms)** | ~13.5 A | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (LxWxH)** | 7.25 x 6.6 x 3.0 mm | --- ### 2. Breakdown of the Part Number Understanding the nomenclature helps in identifying the specific physical and electrical characteristics: * **CDMC**: Series name (Molded Power Inductor). * **6D28**: Dimensions (Approx. 6mm x 6mm footprint, 2.8mm height). * **NP**: Packaging type (Standard Carrier Tape). * **R47**: Inductance value (R47 = 0.47 microhenries). * **M**: Tolerance (±20%). * **C**: Internal code for specific material or construction tweaks. --- ### 3. Key Features and Construction * **Metal Compound Core:** Unlike traditional ferrite inductors, this uses a metal powder molding technology. This allows for a "soft saturation" characteristic, meaning the inductance doesn't drop abruptly when the current increases. * **Low DCR:** The use of thick copper wire ensures very low internal resistance, which minimizes power loss and heat generation. * **Magnetic Shielding:** The molded construction naturally provides magnetic shielding, reducing Electromagnetic Interference (EMI) with surrounding components. * **High Reliability:** Designed to handle high transient current spikes without core damage. --- ### 4. Common Applications This inductor is typically used in high-frequency DC-DC converters and Power Management Integrated Circuits (PMICs). 1. **Notebooks and Tablets:** Voltage Regulator Modules (VRMs) for CPU/GPU power. 2. **Telecommunications:** Base stations and networking equipment requiring high-density power stages. 3. **Automotive (Non-Safety):** Infotainment systems and LED lighting drivers. 4. **SSD/Storage:** Power rails for high-speed data drives. ---