The part number **1210F-R56** typically refers to a **Fixed Chip Inductor** (Surface Mount Device - SMD). This component is widely used in power management and signal filtering circuits. --- ### 1. Part Number Breakdown The naming convention follows industry standards for passive components: | Segment | Meaning | Description | | :--- | :--- | :--- | | **1210** | Case Size | Dimensions are 0.12 x 0.10 inches (approx. 3.2 x 2.5 mm). | | **F** | Tolerance | Indicates a tolerance of **±1%** (High precision). | | **R56** | Inductance Value | "R" acts as a decimal point. Value is **0.56 µH** (Microhenries). | --- ### 2. Technical Specifications While exact specs vary slightly by manufacturer (such as Fastron or Bourns), a standard 1210F-R56 generally features: * **Inductance:** 0.56 µH. * **Tolerance:** ±1% (Standard inductors are often ±10% or ±20%, making 'F' a precision grade). * **Mounting Type:** Surface Mount (SMD/SMT). * **Core Material:** Usually Ferrite or Ceramic depending on the frequency range. * **Packaging:** Tape and Reel for automated pick-and-place machines. --- ### 3. Key Applications Because this is a low-inductance, high-precision part, it is commonly found in: 1. **RF Circuits:** Used for impedance matching and signal tuning. 2. **Filtering:** Decoupling high-frequency noise in power supply lines (DC-DC converters). 3. **Communication Devices:** Mobile phones, Wi-Fi modules, and GPS receivers. 4. **Automotive Electronics:** Sensors and infotainment systems where space is limited. --- ### 4. Physical Dimensions (Metric 3225) | Dimension | Measurement (mm) | Measurement (inches) | | :--- | :--- | :--- | | **Length (L)** | 3.2 ± 0.3 mm | 0.126" | | **Width (W)** | 2.5 ± 0.2 mm | 0.098" | | **Thickness (T)** | ~2.0 - 2.5 mm | ~0.08" |