The **W2AP-D13-R2/N** is a specific electronic component typically categorized as a **Surface Mount Device (SMD) Power Inductor** or a similar passive magnetic component used in power management circuits. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Key Technical Specifications | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | SMD Shielded Power Inductor | | **Inductance** | Specified by the "D13" code (varies by manufacturer series) | | **Tolerance** | Usually ±20% (M) or ±30% (N) | | **Core Material** | Ferrite or Carbonyl Iron Powder | | **Shielding** | Magnetically Shielded (reduces EMI) | | **Operating Temperature** | -40°C to +125°C (typical for automotive/industrial grade) | | **Termination** | RoHS compliant, Lead-Free (R2/N suffix) | --- ### 2. Part Number Breakdown (Generic Interpretation) While part numbering schemes vary by manufacturer (such as Wurth Electronics or Coilcraft clones), the suffix and prefix usually follow this logic: * **W2AP**: Series identifier. "W" often refers to a Wire-wound construction; "2" or "A" can denote size or generation. * **D13**: Dimensional code. Typically indicates a footprint of approximately **13mm x 13mm**. The "D" often refers to the height (e.g., 5mm to 7mm). * **R2**: Revision code or specific Inductance value. If "R2" represents value, it often means **0.22µH** or **2.2µH** depending on the decimal placement standard. * **N**: Tolerance code. In most passive components, **N** stands for **±30%** tolerance. --- ### 3. Electronic Functions These parts are primarily used in **DC-DC Converters** and **Voltage Regulator Modules (VRM)** for the following purposes: 1. **Energy Storage:** Stores energy in a magnetic field during the "on" cycle of a switching regulator. 2. **Filtering:** Works with capacitors to smooth out output ripples and provide steady DC voltage. 3. **EMI Suppression:** The shielded design prevents the magnetic field from interfering with neighboring components on the PCB. --- ### 4. Application Examples * **Computing:** High-current Point-of-Load (POL) converters. * **Industrial:** Power supplies for PLC modules and sensors. * **Automotive:** Infotainment systems and LED lighting drivers (due to high temperature stability). ---