The part number **0805F-R47J** refers to a surface-mount electronic component, specifically an **SMD Inductor**. Below is a detailed breakdown of its specifications and nomenclature. --- ### 1. Component Identification The part number is typically structured according to industry standards for passive components. | Parameter | Value | Description | | :--- | :--- | :--- | | **Component Type** | Inductor | Used for filtering, energy storage, or impedance matching. | | **Package Size** | 0805 | Imperial code (0.08 x 0.05 inches) or 2012 Metric. | | **Inductance Value** | 0.47 µH | "R47" translates to 0.47 microhenries. | | **Tolerance** | ±5% | Indicated by the suffix "J". | --- ### 2. Detailed Technical Specifications #### **Mechanical Dimensions (0805)** * **Length:** 2.0 mm (0.08 in) * **Width:** 1.25 mm (0.05 in) * **Height:** Typically varies (0.85 mm to 1.2 mm depending on the manufacturer). #### **Electrical Characteristics** * **Inductance (L):** 470 nH (0.47 µH). * **Tolerance (J):** ±5%. This is a relatively high-precision rating for standard inductors. * **Construction:** Likely a **Ceramic Core** or **Ferrite Wire-wound** inductor. "F" often signifies a Ferrite core in many manufacturer catalogs (like Fastron or Bourns), which allows for higher current handling. --- ### 3. Application Use Cases This specific value (0.47 µH) is commonly found in the following circuits: 1. **RF Circuits:** Used in high-frequency matching networks and filters. 2. **DC-DC Converters:** Acts as a power inductor for small, low-current voltage regulators. 3. **Signal Decoupling:** Helps block high-frequency noise from entering sensitive parts of a circuit. 4. **EMI Suppression:** Used in LC filters to reduce electromagnetic interference. --- ### 4. Typical Marking Logic The code **R47** uses the letter "R" as a decimal point: * `4R7` = 4.7 µH * `R47` = 0.47 µH * `470` = 47 µH (where the last digit is the multiplier) ---