The **CSS136F** is a specialized electronic component primarily categorized as a **Surface Mount Device (SMD) Power Inductor**. It is widely used in power management circuits due to its compact profile and high current handling capabilities. --- ## 1. Technical Specifications The "136" in the part number typically refers to the physical dimensions (approximately 13mm x 13mm x 6mm). Below is a breakdown of the standard technical characteristics: | Feature | Specification (Typical) | | :--- | :--- | | **Inductance Range** | 0.47µH to 100µH | | **Tolerance** | ±20% (M) | | **DCR (DC Resistance)** | Very low (mΩ range) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically shielded (prevents EMI) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ## 2. Key Internal Components The CSS136F is constructed using high-quality materials to ensure efficiency in high-frequency applications: * **Core Material:** Usually a Ferrite core or Metal Composite powder. This allows for high saturation current (Isat) and low core losses. * **Winding:** Flat wire or thick round copper wire is used to minimize the DC Resistance (DCR), which reduces heat generation. * **Shielding:** A magnetic resin or a ferrite drum core with a ring sleeve to contain the magnetic field, reducing interference with surrounding components. --- ## 3. Applications This part is commonly found in circuits where stable power delivery is critical: 1. **DC-DC Converters:** Used as a storage element in buck (step-down) or boost (step-up) converters. 2. **Server Power Supplies:** High current ratings make it ideal for CPU/GPU power phases (VRM). 3. **Laptops & Tablets:** Its low profile (6mm height) fits into thin consumer electronics. 4. **Automotive Electronics:** Used in infotainment systems and LED lighting drivers. --- ## 4. Part Number Breakdown (Example) While prefixes vary by manufacturer (e.g., Coilmaster, Sumida, or generic brands), the code usually follows this logic: `CSS 136 F - 100 M` * **CSS:** Series name (Shielded Power Inductor). * **136:** Dimensions (13mm width/length, 6mm height). * **F:** Lead-free / RoHS compliant. * **100:** Inductance Value ($10 \times 10^0 = 10 \mu H$). * **M:** Tolerance ($\pm 20\%$).