The **CDEP85NP-R80MC-88** is a high-power, surface-mount (SMD) power inductor manufactured by **Sumida**. It belongs to the CDEP85 series, which is characterized by its high current capability and magnetic shielding. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Inductance** | 0.8 µH | | **Tolerance** | ±20% (Code: M) | | **DC Resistance (Max)** | 3.50 mΩ | | **Saturation Current (Isat)** | ~21.0 A (at 20°C) | | **Temperature Rise Current (Irms)** | ~14.5 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 8.0 x 8.0 x 6.0 mm | --- ### 2. Part Number Breakdown To understand the component better, here is the decoding of the nomenclature: * **CDEP85**: The series name (Standard power inductor, ~8mm footprint). * **NP**: Indicates the packaging type (Standard Carrier Tape). * **R80**: Represents the inductance value. `R80` = 0.80 µH. * **M**: The tolerance code. `M` = ±20%. * **C**: Connection/Terminal type. * **88**: Specific internal factory/design code (often relating to height or core material). --- ### 3. Core Features and Construction * **Magnetic Shielding:** The part is magnetically shielded, which prevents electromagnetic interference (EMI) with neighboring components on the PCB. * **High Current Handling:** Due to the use of a manganese-zinc (Mn-Zn) ferrite core, it offers high saturation current levels compared to standard inductors. * **Flat Wire Technology:** Many inductors in this series use flat copper wire to reduce DC resistance (DCR), which improves efficiency and reduces heat generation. --- ### 4. Common Applications This inductor is typically used in power management circuits where high efficiency and high current are required: 1. **DC/DC Converters:** Used in buck or boost regulators. 2. **Computing:** Power supplies for CPUs and GPUs (VRM modules). 3. **Industrial:** High-efficiency power supplies for automation equipment. 4. **Audio:** Class-D amplifiers and filtering. ---