## PG0255.222NL Technical Overview The **PG0255.222NL** is a high-current, shielded Power Inductor manufactured by **Pulse Electronics** (now a Yageo company). It belongs to the PG0255 series, characterized by its SMT (Surface Mount Technology) design and "Flat Coil" construction. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 2.2 µH | | **Tolerance** | ±20% | | **Saturation Current (Isat)** | ~25.0 Amperes | | **Heating Current (Irms)** | ~16.5 Amperes | | **DC Resistance (DCR)** | 3.5 mΩ (Nominal) | | **Operating Temperature** | -40°C to +130°C | | **Package / Case** | SMT (Approx. 13.5 x 12.9 x 6.0 mm) | --- ### 2. Core Features and Construction * **Flat Coil Technology:** Instead of standard round wire, this part uses flat wire. This increases the surface area, reducing the DC resistance (DCR) and allowing for much higher current handling in a smaller footprint. * **Magnetic Shielding:** The component is shielded, which minimizes Electromagnetic Interference (EMI) with surrounding components on the PCB. * **High Saturation:** It is designed to maintain its inductance even under high peak currents, preventing the core from "saturating" too quickly. * **RoHS Compliant:** The "NL" suffix indicates that the part is Lead-Free (No Lead). --- ### 3. Common Applications This inductor is typically used in power conversion circuits where high efficiency and high current density are required: 1. **DC/DC Converters:** Specifically in Point-of-Load (POL) modules. 2. **Voltage Regulator Modules (VRM):** Used in servers and high-performance computing power stages. 3. **Battery Powered Systems:** Where low DCR is critical to preserving battery life. 4. **Automotive Electronics:** Used in infotainment and ADAS power management. --- ### 4. Footprint Example (Approximate) ```text 13.5 mm +--------------+ | | | PG0255. | | 222NL | 12.9 mm | | +--------------+ [ ] [ ] <-- Solder pads ```