The **BL02RN2-R62** is a specific type of **Ferrite Bead** (EMI suppression filter) manufactured by **Murata Electronics**. It is designed to suppress high-frequency noise in electronic circuits without causing significant signal distortion at lower frequencies. --- ## 1. Key Specifications The following table summarizes the primary electrical and physical characteristics of the BL02RN2-R62: | Parameter | Specification | | :--- | :--- | | **Component Type** | Ferrite Bead (Axial Lead) | | **Impedance (at 100MHz)** | 300 $\Omega$ (Typical) | | **Rated Current** | 7 Amperes | | **DC Resistance (DCR)** | 0.02 $\Omega$ Max | | **Operating Temperature** | -40°C to +85°C | | **Mounting Type** | Through-Hole (Axial) | | **Lead Diameter** | 0.6 mm | --- ## 2. Construction and Design The BL02RN2 series features a unique construction compared to standard surface-mount beads: * **Bead Core:** It consists of a cylindrical ferrite core. * **Conductor:** A single wire passes through the center of the ferrite bead. * **Forming:** The "R62" suffix specifically refers to the **lead forming style**. In this case, the leads are usually bent or taped in a specific orientation for automated insertion into Printed Circuit Boards (PCBs). --- ## 3. Function and Applications The device acts as a high-frequency resistor. It converts high-frequency electromagnetic interference (EMI) into negligible amounts of heat. ### Common Uses: 1. **Power Supply Lines:** Used to filter out ripple and noise from switching power supplies. 2. **General Noise Suppression:** Prevents high-frequency oscillations in analog circuits. 3. **Digital Interface Protection:** Used on data lines to reduce "ringing" and electromagnetic radiation. --- ## 4. Part Number Breakdown The Murata part numbering system for this component follows this logic: ```text BL 02 RN 2 R62 | | | | | | | | | +--- Lead Forming/Packaging (Radial Taping/Bent) | | | +------- Diameter of ferrite core | | +---------- Standard Ferrite Material | +-------------- Series Code (Indicates bead shape) +------------------ Ferrite Bead (Inductor category) ```