The part number **1008F-R56M** typically refers to a Surface Mount Device (SMD) **Wire-Wound Inductor**. These components are widely used in Radio Frequency (RF) and signal processing circuits. --- ### 1. Part Number Breakdown Understanding each segment of the alphanumeric code: | Segment | Meaning | Description | | :--- | :--- | :--- | | **1008** | **Package Size** | Dimensions: 0.10 x 0.08 inches (approx. 2.5 x 2.0 mm). | | **F** | **Ferrite Core** | Indicates a ferrite core material (higher inductance values). | | **R56** | **Inductance Value** | **0.56 µH** (Microhenries). 'R' acts as the decimal point. | | **M** | **Tolerance** | **±20%** tolerance on the inductance value. | --- ### 2. Technical Specifications While exact specs vary by manufacturer (such as API Delevan, Fastron, or Bourns), a standard 1008F-R56M generally follows these parameters: * **Inductance:** 0.56 µH * **DC Resistance (DCR):** Typically low (between 0.15Ω to 0.70Ω), allowing for efficient power passage. * **Rated Current (Idc):** Usually ranges from 400mA to 700mA. * **Self-Resonant Frequency (SRF):** Usually around 150MHz – 300MHz. * **Operating Temperature:** Typically -40°C to +125°C. --- ### 3. Key Features & Construction * **Wire-Wound Design:** Copper wire is wrapped around a ceramic or ferrite core. This provides better performance (higher Q-factor) than multilayer chip inductors. * **Ferrite Core:** The "F" signifies ferrite, which allows for higher inductance density and better magnetic shielding compared to air-core or ceramic-core inductors. * **Encapsulation:** Usually coated in an epoxy resin to protect the winding from environmental factors and physical damage. --- ### 4. Typical Applications These inductors are commonly found in: 1. **Mobile Communications:** Filtering and matching in RF stages. 2. **DC-DC Converters:** Small-scale power management circuits. 3. **Signal Lines:** Suppressing high-frequency noise (EMI/RFI filtering). 4. **Automotive Electronics:** Infotainment systems and sensor modules. --- ### 5. Equivalent Replacement Guide If you are looking for an alternative, ensure the following match: ```text 1. Footprint: 1008 (Metric 2520) 2. Inductance: 0.56 µH 3. Current Rating: Must be equal to or higher than the original 4. DCR: Must be equal to or lower than the original ```