## Electronic Specifications: SS17HB-R05140 The **SS17HB-R05140** is a high-reliability common mode choke coil manufactured by **KEMET** (formerly NEC/TOKIN). It belongs to the SS series, designed for noise suppression in power supply circuits. --- ### 1. Key Technical Specifications Below is a breakdown of the primary electrical and physical characteristics of this specific model: | Parameter | Specification | | :--- | :--- | | **Inductance (Min)** | 14.0 mH | | **Rated Current (AC)** | 0.5 A (500 mA) | | **DC Resistance (Max)** | 1.50 Ω (per line) | | **Rated Voltage** | 250 VAC / 300 VDC | | **Temperature Rise (Max)** | 45 K | | **Operating Temperature** | -25°C to +120°C | | **Core Material** | Ferrite (Mn-Zn) | --- ### 2. Functional Components The part is composed of several critical electronic elements that determine its performance: * **Dual Windings:** It consists of two separate coils wound onto a single ferrite core. These coils are identical and are designed to handle differential signals while cancelling common-mode noise. * **Closed Magnetic Circuit:** The "HB" designation usually refers to the physical structure (High-permeability core in a horizontal/vertical frame). The closed circuit ensures high inductance in a compact size. * **Flame Retardant Base:** The bobbin and housing are made of UL94 V-0 rated materials, ensuring safety in high-heat power environments. --- ### 3. Part Number Breakdown Understanding the nomenclature helps identify its specific role: | Segment | Meaning | | :--- | :--- | | **SS** | Series Name (Standard Type) | | **17** | Core Size/Dimension code | | **HB** | Mounting configuration (High-Permeability/Specific shape) | | **R05** | Rated Current (0.5 Amperes) | | **140** | Inductance value (14.0 mH) | --- ### 4. Typical Applications This component is primarily used as an **EMI (Electromagnetic Interference) Filter**. Common use cases include: * **Switch Mode Power Supplies (SMPS):** Preventing switching noise from entering the AC line. * **LED Lighting Drivers:** Reducing flicker and electrical noise. * **Consumer Electronics:** Used in TVs, Audio equipment, and office automation tools to comply with EMC regulations.