## Overview of the Murata PLT10HH Series The **PLT10HH** is a series of high-performance, large-current **Common Mode Choke Coils** manufactured by Murata. These components are specifically designed for noise suppression in DC power lines, particularly in automotive and industrial applications where high reliability and high current handling are required. ### 1. Key Technical Specifications | Parameter | Typical Value Range | | :--- | :--- | | **Common Mode Inductance** | 1.1µH to 20µH (at 10MHz) | | **Rated Current** | 6A to 18A | | **Rated Voltage** | 100Vdc | | **Operating Temperature** | -55°C to +125°C | | **DC Resistance (RDC)** | 1.5mΩ to 8.0mΩ (Max) | | **Package Size** | 10.7 x 9.1 x 9.1 mm | --- ### 2. Core Functions and Features * **Common Mode Noise Suppression:** Its primary role is to eliminate electromagnetic interference (EMI) that occurs in the same direction on both supply lines, while allowing the desired differential signals (current) to pass through. * **High Current Capability:** Unlike standard surface-mount beads, the PLT10HH can handle up to **18A**, making it suitable for heavy-duty power supplies. * **AEC-Q200 Compliance:** Most models in this series are automotive grade, meaning they are tested for high vibration, thermal shock, and mechanical stress. * **Low DC Resistance:** The use of thick copper wire ensures minimal power loss and heat generation, which is critical for high-efficiency circuits. --- ### 3. Internal Structure and Design The component consists of two coils wound around a single ferrite core. * **Magnetic Material:** High-permeability ferrite. * **Winding:** Precision winding to balance the two lines, ensuring that differential signals do not saturate the core. * **Termination:** Large solder pads for robust mechanical attachment to the PCB to withstand vibrations. --- ### 4. Common Applications The PLT10HH is typically found in the following environments: 1. **Automotive:** Power steering (EPS), LED headlamps, and Battery Management Systems (BMS). 2. **Industrial:** Large-scale motor drives and power converters. 3. **Computing:** High-power servers and base station power supplies. --- ### 5. Part Number Breakdown Example `PLT10HH 401 100 PN` * **PLT:** Series Name (Common Mode Choke Coil) * **10:** Dimensions (approx 10mm) * **HH:** Features/Type (High Current/Automotive) * **401:** Impedance/Inductance Code (e.g., 400Ω at 10MHz) * **100:** Rated Current (10.0 Amperes) ---