## LLM3225-R10H: Electronic Specifications and Overview The **LLM3225-R10H** is a surface-mount (SMD) wire-wound chip inductor. It is commonly used in high-frequency circuits, power supplies, and signal processing due to its compact size and stable performance. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify its physical and electrical characteristics: | Code Segment | Meaning | Details | | :--- | :--- | :--- | | **LLM** | Series Category | Multi-layer or Wire-wound Inductor series | | **3225** | Case Size (Metric) | 3.2mm x 2.5mm (roughly 1210 in Imperial) | | **R10** | Inductance Value | **0.10 µH** (R denotes the decimal point) | | **H** | Tolerance | Typically ±3% or specific manufacturer coding | --- ### 2. Key Technical Specifications While specific parameters can vary slightly between manufacturers (such as Taiyo Yuden or Toko/Murata), the standard profile for an R10 3225 inductor is as follows: * **Inductance:** 0.10 µH (100 nH) * **Operating Temperature:** -40°C to +125°C (includes self-temperature rise) * **DC Resistance (DCR):** Low resistance, typically in the range of 0.15 to 0.45 Ohms to minimize power loss. * **Rated Current:** Usually ranges between 400mA to 800mA (Saturation current). * **Self-Resonant Frequency (SRF):** High SRF (typically > 400 MHz), making it ideal for high-frequency filtering. --- ### 3. Construction and Material The "3225" series usually employs a **Wire-wound** construction on a ferrite or ceramic core. * **Core Material:** Ferrite is common for power applications to provide high flux density. * **Termination:** Tin-plated (Sn) over nickel (Ni) barrier for excellent solderability. * **Encapsulation:** Often resin-coated or molded to protect the wire winding from mechanical stress and environmental factors. --- ### 4. Typical Applications The LLM3225-R10H is frequently found in the following electronic environments: 1. **DC-DC Converters:** Used as an energy storage element in small power modules. 2. **RF Circuits:** Impedance matching and decoupling in wireless communication devices. 3. **EMI Suppression:** Filtering high-frequency noise in signal lines. 4. **Mobile Electronics:** Power management in smartphones, tablets, and wearable tech. --- ### 5. Footprint (Dimensions) | Dimension | Measurement (mm) | | :--- | :--- | | **Length (L)** | 3.2 ± 0.3 mm | | **Width (W)** | 2.5 ± 0.2 mm | | **Thickness (T)** | 1.1 - 2.5 mm (variable by model) |