The **CDEP85NP-R45MC-50** is a high-performance, surface-mount (SMD) power inductor manufactured by **Sumida**. It belongs to the CDEP85 series, which is specifically designed for high-current applications where stability and low energy loss are critical. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of this component: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 0.45 µH | | **Tolerance** | ±20% (M) | | **DC Resistance (DCR)** | 2.50 mΩ (Max) | | **Saturation Current (Isat)** | ~19.2 Amperes | | **Temperature Rise Current (Irms)** | ~14.0 Amperes | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (L x W x H)** | 8.8 x 8.5 x 5.6 mm | | **Core Material** | Manganese-Zinc (Mn-Zn) Ferrite | --- ### 2. Key Features and Benefits * **High Current Handling:** Due to the Mn-Zn ferrite core, it can handle significant current spikes without immediate saturation. * **Magnetic Shielding:** The "NP" designation indicates a shielded construction, which minimizes electromagnetic interference (EMI) with surrounding components. * **Low DCR:** The very low DC resistance (2.5 mΩ) ensures minimal power loss and heat generation, increasing the overall efficiency of the power supply. * **Robust Construction:** The flat-wire or thick-wire winding technique inside the molded body provides excellent mechanical stability. --- ### 3. Application Areas This inductor is typically found in high-efficiency power regulation circuits, including: 1. **DC/DC Converters:** Used in "Buck" or "Boost" converters to store energy. 2. **Server/Storage Systems:** Providing stable power to high-speed CPUs and GPUs. 3. **Industrial Electronics:** Used in motor control and power distribution units. 4. **Telecom:** High-current power modules for networking equipment. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: `CDEP` `85` `NP` - `R45` `M` `C` - `50` * **CDEP:** Series Name (High Power Inductor). * **85:** Size code (approx. 8.5mm width). * **NP:** Standard packaging/shielding type. * **R45:** Inductance value (R45 = 0.45 µH). * **M:** Tolerance (M = ±20%). * **C:** Terminal type or specific internal revision. * **50:** Packaging/Standard variation code.