The **NPIS-R Series** refers to a specific line of **Shielded Surface Mount (SMD) Power Inductors** manufactured by companies like NIC Components. These parts are critical in modern electronics for managing power efficiency and reducing Electromagnetic Interference (EMI). --- ### 1. Key Characteristics The NPIS-R series is defined by its physical construction and magnetic properties. | Feature | Description | |:---|:---| | **Magnetic Shielding** | Uses a ferrite-based resin or cover to contain the magnetic field, minimizing interference with nearby components. | | **Mounting Type** | Surface Mount Device (SMD/SMT) for automated PCB assembly. | | **Core Material** | High-performance Ferrite, optimized for high saturation currents. | | **Configuration** | Low profile (thin) designs, ideal for compact consumer electronics. | --- ### 2. Technical Specifications While specifications vary by the specific model (e.g., NPIS43R vs. NPIS63R), they generally follow these parameters: * **Inductance Range:** Typically ranges from **1.0µH to 1,000µH**. * **Tolerance:** Usually **±20% (M)** or **±30% (N)**. * **Operating Temperature:** Generally rated from **-40°C to +125°C**. * **DC Resistance (DCR):** Engineered to be as low as possible to reduce power loss and heat generation. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying the component's physical size. ```text NPIS 63 R - 100 M T F | | | | | | | | | | | | | +-- RoHS Compliant | | | | | +---- Packaging (Tape & Reel) | | | | +------ Tolerance (M = 20%) | | | +---------- Inductance Value (100 = 10µH) | | +-------------- Series Identifier (R = Shielded) +---+----------------- Dimensions (e.g., 63 = 6.2mm x 6.2mm) ``` --- ### 4. Common Applications Due to their shielded nature and high current handling, they are found in: 1. **DC/DC Converters:** Used as energy storage elements in buck or boost regulators. 2. **Portable Electronics:** Smartphones, tablets, and laptops where space is at a premium. 3. **LED Lighting:** Drivers that require stable current and low EMI. 4. **Automotive Infotainment:** Noise filtering for onboard screens and audio systems. --- ### 5. Advantages vs. Non-Shielded Inductors 1. **Low EMI:** The shielding prevents the inductor from acting like a small radio antenna, which is crucial for passing FCC/CE certifications. 2. **High Density:** Because they don't leak magnetic flux, you can place them closer to other sensitive components on a PCB. 3. **Efficiency:** Better performance in switching power supplies compared to standard wire-wound unshielded types.