The **WL322522-R82** is a specific surface-mount (SMD) wire-wound chip inductor. It is commonly used in high-frequency applications, signal processing, and decoupling circuits. ### 1. General Specifications The part number follows a standard nomenclature system that defines its physical size and electrical properties. | Parameter | Value / Detail | | :--- | :--- | | **Component Type** | Wire-wound Chip Inductor | | **Case Size** | 3225 (Metric) / 1210 (Imperial) | | **Dimensions** | 3.2mm x 2.5mm x 2.2mm | | **Inductance** | 0.82 µH (Microhenries) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Technical Breakdown The code **WL322522-R82** can be decrypted as follows: * **WL**: Series prefix (Wire-wound, Low profile or General purpose). * **322522**: Dimensions (Length: 3.2mm, Width: 2.5mm, Height: 2.2mm). * **R82**: Inductance value. The "R" acts as a decimal point. Therefore, R82 = **0.82 µH**. ### 3. Key Electrical Characteristics While specific values may vary slightly by manufacturer (such as Bourns or TDK), typical characteristics for an R82 inductor in this package include: | Characteristic | Typical Range | | :--- | :--- | | **Tolerance** | ±10% (K) or ±20% (M) | | **Quality Factor (Q)** | 20 - 30 (at specific frequencies) | | **SRF (Self-Resonant Frequency)** | ~250 MHz to 400 MHz | | **DCR (DC Resistance)** | ~0.40 to 0.70 Ohms | | **Rated Current** | ~400mA to 500mA | --- ### 4. Applications The WL322522 series is designed for stability and reliability in various electronic environments: * **RF Circuits:** Used for impedance matching and resonance. * **Telecommunications:** Signal filtering in mobile devices and base stations. * **Power Management:** Low-current DC-DC conversion and decoupling/noise suppression. * **Consumer Electronics:** Video cameras, portable audio, and automotive infotainment. --- ### 5. Features * **Wire-wound Construction:** Provides higher Q factors and higher current handling compared to multilayer inductors. * **High Heat Resistance:** Suitable for reflow soldering. * **Excellent Solderability:** Usually features tinned copper or silver-palladium terminations.