The **SS30V-R180190** is a high-performance, dual-choke common mode filter (inductor) typically manufactured by **KEMET**. It is designed specifically to suppress electromagnetic interference (EMI) in power supply circuits. --- ## 1. Component Specifications Below are the primary technical parameters for the SS30V-R180190 model: | Parameter | Specification | | :--- | :--- | | **Series** | SS30V (High Permeability Core) | | **Rated Current** | 1.8 Amperes (A) | | **Inductance (Min)** | 19.0 Millihenries (mH) | | **DC Resistance (Max)** | 0.28 Ohms (Ω) per line | | **Rated Voltage** | 250 VAC / 300 VDC | | **Temperature Range** | -25°C to +120°C | | **Mounting Type** | Through-Hole (Vertical) | --- ## 2. Key Electronic Features ### A. Core Material and Design * **High-Permeability Ferrite:** The "V" in the series often denotes a vertical configuration using a high-permeability Mn-Zn (Manganese-Zinc) ferrite core. This allows for high inductance values in a relatively small footprint. * **Split Bobbin:** The design features a split bobbin to separate the two windings, which helps in maintaining high dielectric strength between the lines. ### B. Common Mode Suppression The device acts as a low-pass filter for **Common Mode Noise** (noise that flows in the same direction on both the hot and neutral lines). Because the magnetic fields from the supply current cancel each other out, the inductor does not saturate under normal load, but it provides high impedance against high-frequency noise. ### C. Thermal Management The part is rated for a temperature rise of 45K to 55K. The 1.8A rating is the maximum continuous current it can handle without exceeding its thermal safety limits. --- ## 3. Typical Applications The SS30V-R180190 is commonly found in the input stage of electronics to comply with EMC regulations (like FCC or CE). 1. **Switch Mode Power Supplies (SMPS):** Prevents high-frequency switching noise from feeding back into the AC grid. 2. **LED Lighting Drivers:** Used to stabilize current and reduce flicker/noise. 3. **Home Appliances:** Integrated into washing machines, refrigerators, and air conditioners. 4. **Audio/Video Equipment:** Filters "hum" and line interference for cleaner signal processing. --- ## 4. Pin Configuration (Mechanical) The "Vertical" designation means the coil sits upright on the PCB to save horizontal board space. ```text Top View Diagram: [ (1) (4) ] <-- Coil 1 Start / Coil 2 Finish [ ] [ (2) (3) ] <-- Coil 1 Finish / Coil 2 Start ``` ---