The **SS20H-R10100** is a common mode choke coil (inductor) primarily used for noise suppression in power supply circuits. It is manufactured by companies like KEMET (formerly TOKIN). --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance (Min)** | 10.0 mH | | **Rated Current (AC)** | 1.0 A | | **DC Resistance (Max)** | 0.45 Ω (per line) | | **Rated Voltage** | 250 VAC / 250 VDC | | **Temperature Rise** | 45 K (Max) | | **Operating Temperature** | -25°C to +120°C | | **Mounting Type** | Through-Hole (Vertical) | --- ### ## Core Electronic Components & Design ### 1. Magnetic Core The device utilizes a **high-permeability ferrite core**. The "SS" series typically features a closed magnetic circuit design, which helps in achieving high impedance even at low frequencies, effectively filtering out electromagnetic interference (EMI). ### 2. Windings It consists of two symmetrical coils wound onto a single core. * **Common Mode Action:** When noise current flows in the same direction on both lines, the magnetic fields add up, creating high impedance to block the noise. * **Differential Mode Action:** For the actual power signal (flowing in opposite directions), the magnetic fields cancel out, allowing the power to pass with minimal resistance. ### 3. Physical Form Factor (H-Type) The "H" in the part number signifies a **High-profile/Vertical** orientation. This design is optimized for saving "footprint" space on a Printed Circuit Board (PCB), though it requires more vertical clearance. --- ### ## Applications The SS20H-R10100 is typically found in the input stage of electronics to comply with EMI/EMC regulations: * **Switch Mode Power Supplies (SMPS):** Filtering AC line noise. * **Consumer Electronics:** Televisions, Audio equipment, and PC peripherals. * **Industrial Equipment:** Protecting sensitive controllers from grid noise. --- ### ## Naming Convention Breakdown * **SS:** Series name (Small Size/Standard). * **20:** Size code (refers to the physical dimensions of the core). * **H:** Vertical mounting type. * **R:** Denotes the rated current (1.0 A). * **10100:** Denotes the inductance value (10 mH).