The **SSB11H-R17043** is a high-performance common mode choke coil (inductor) primarily used for noise suppression in power supply circuits. It is manufactured by **KEMET** (formerly NEC TOKIN). Below is a detailed breakdown of its electronic specifications and characteristics. ### 1. General Specifications The SSB series is known for its compact size and high inductance-to-current ratio, making it ideal for EMI (Electromagnetic Interference) filtering. | Parameter | Specification | | :--- | :--- | | **Part Number** | SSB11H-R17043 | | **Inductance (Min)** | 4.3 mH | | **Rated Current (AC)** | 1.7 A | | **DC Resistance (Max)** | 210 mΩ (per line) | | **Temperature Rise (Max)** | 45 K | | **Voltage Rating** | 250 VAC / 300 VDC | | **Operating Temp Range** | -25°C to +120°C | --- ### 2. Physical Characteristics This component is designed for through-hole mounting on Printed Circuit Boards (PCBs). * **Core Material:** Ferrite (High permeability manganese-zinc or nickel-zinc base). * **Structure:** Dual-winding on a single core (Hybrid coil structure). * **Dimensions (Approx):** 18.0 mm (W) x 13.0 mm (D) x 18.5 mm (H). * **Weight:** Approximately 8.3 grams. --- ### 3. Key Functions & Applications #### Functional Role The primary role of the SSB11H-R17043 is to act as a **Common Mode Filter**. It allows the desired differential currents (the power) to pass through while providing high impedance to unwanted common-mode noise (EMI/RFI) that travels in the same direction on both lines. #### Common Applications * **Switching Power Supplies (SMPS):** Filtering AC line input noise. * **LED Lighting:** Preventing high-frequency noise from entering the power grid. * **Home Appliances:** Used in TVs, air conditioners, and PCs. * **Industrial Equipment:** Protecting sensitive control circuits from line interference. --- ### 4. Technical Advantages 1. **High Impedance:** Provides excellent attenuation across a broad frequency range. 2. **Compact Footprint:** High current capacity (1.7A) relative to its small physical size. 3. **Low Profile:** Suitable for space-constrained electronics. 4. **Safety Compliance:** Designed to meet standard insulation requirements for AC line applications.