The **6556-R** typically refers to a high-performance **Common Mode Choke** (Inductor) manufactured by companies like **Bourns** (specifically the JW Miller line). These components are designed to filter electromagnetic interference (EMI) in power lines and signal circuits. --- ### 1. Key Technical Specifications Below are the typical technical parameters associated with the 6556-R series: | Parameter | Value (Typical) | | :--- | :--- | | **Inductance** | 10.0 mH | | **Current Rating (DC)** | 0.50 Amps | | **DCR (Max Resistance)** | 1.10 Ohms | | **Mounting Type** | Through-Hole | | **Core Material** | Ferrite | | **Termination** | Radial Leads (Tin plated) | --- ### 2. Functional Description The 6556-R acts as a **Common Mode Filter**. Its primary functions include: 1. **Noise Suppression:** It suppresses common-mode noise (signals that flow in the same direction on both power lines) without affecting the desired differential-mode signals. 2. **EMI Compliance:** Helps electronic devices meet FCC and CE electromagnetic compatibility standards. 3. **High Impedance:** Provides high impedance over a wide frequency range to block high-frequency interference. --- ### 3. Application Areas These parts are commonly found in power-sensitive electronic environments: * **Switching Power Supplies (SMPS):** Filtering AC input lines. * **Audio Equipment:** Reducing hum and line noise. * **Telecommunications:** Protecting data lines from power surges and interference. * **Industrial Controllers:** Ensuring stable operation in electrically "noisy" environments. --- ### 4. Part Number Breakdown (Example) While specific to the manufacturer, the "R" suffix usually denotes **RoHS Compliance**, meaning the part is lead-free and meets environmental safety standards. ```json { "Part_Series": "6500 Series", "Model": "6556", "Suffix": "R (RoHS Compliant)", "Type": "Common Mode Choke" } ```