The **48NDR-0R6-R** is a specific part number typically associated with **High-Frequency Power Inductors** or **Choke Coils**, often manufactured by companies like Sumida or similar magnetic component specialists. Below is a breakdown of the electronic characteristics and specifications for this type of component. --- ### 1. General Specifications Based on the standard nomenclature for this series, here are the technical parameters: | Parameter | Specification | | :--- | :--- | | **Component Type** | Fixed Inductor / Power Inductor | | **Inductance** | 0.6 µH (Microhenries) | | **Tolerance** | ±20% (typically denoted by 'M' or standard series) | | **Package / Case** | 4.8mm x 4.8mm (Approximate footprint) | | **Current Rating** | High Current (Specific to DC Saturation) | | **RoHS Status** | Compliant (Indicated by the '-R' suffix) | --- ### 2. Part Number Deciphering The alphanumeric code follows a specific logic used in industrial electronics: * **48**: Refers to the physical dimensions (e.g., a square footprint of approximately 4.8mm x 4.8mm). * **NDR**: Series identifier (usually indicates a non-shielded or semi-shielded power inductor designed for surface mount technology - SMT). * **0R6**: The Inductance value. The "R" acts as a decimal point. * `0R6` = 0.6 µH. * **R**: Generally signifies "RoHS Compliant" or "Tape & Reel" packaging. --- ### 3. Key Electronic Functions This component is primarily used in power management circuits. Its roles include: 1. **Energy Storage**: In DC-DC converters (Buck, Boost, or Buck-Boost), it stores energy in a magnetic field during the "on" cycle and releases it during the "off" cycle. 2. **Filtering**: It works alongside capacitors to smooth out ripples in output voltage, ensuring a stable DC supply for sensitive chips. 3. **Noise Suppression**: Acts as a low-pass filter to block high-frequency electromagnetic interference (EMI) while allowing DC to pass. --- ### 4. Applications You will commonly find the 48NDR-0R6-R in the following devices: * **Mobile Electronics**: Smartphones and tablets (due to the small 4.8mm footprint). * **Computing**: Point-of-Load (POL) converters on motherboards. * **LED Drivers**: Managing current for high-brightness LEDs. * **SSD/Storage**: Power rails for high-speed data drives. --- ### 5. Technical Considerations for Design If you are integrating this into a circuit, pay attention to these two critical curves: * **Saturation Current ($I_{sat}$)**: The current level at which the inductance drops by a certain percentage (usually 30%). Do not exceed this, or the inductor will lose its properties. * **Temperature Rise Current ($I_{rms}$)**: The DC current that causes the component's temperature to rise by a specific amount (usually 40°C).