The **PIC10040-R36M** is a high-current, shielded power inductor typically manufactured by **Cyntec** (or similar manufacturers following the same naming convention). It is designed for high-density power applications like DC-DC converters. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical specifications: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **PIC** | Series | Power Inductor (Molded type) | | **10040** | Case Size | ~10.0mm x 11.5mm base, 4.0mm height | | **R36** | Inductance | 0.36 µH (Microhenries) | | **M** | Tolerance | ±20% | --- ### 2. Key Electrical Specifications While specific values can vary slightly by manufacturer, the standard parameters for a 10040-R36M are: * **Inductance:** 0.36 µH. * **DC Resistance (DCR):** Extremely low, typically between **0.8mΩ to 1.2mΩ**. * **Saturation Current ($I_{sat}$):** The current at which inductance drops by ~30%. Usually rated around **50A - 60A**. * **Heat Rating Current ($I_{rms}$):** The current that causes a 40°C temperature rise. Usually rated around **30A - 35A**. * **Operating Temperature:** Generally -55°C to +125°C. --- ### 3. Construction and Features The PIC series uses a **Molded Metal Powder** construction, which offers several advantages: 1. **Magnetic Shielding:** The coil is encapsulated in a metallic powder/resin composite, which minimizes Electromagnetic Interference (EMI). 2. **Soft Saturation:** Unlike ferrite cores that lose inductance sharply, these molded inductors saturate gradually as current increases. 3. **Low Buzz Noise:** The solid molded structure reduces acoustic noise caused by magnetostriction. 4. **High Current Density:** The flat-wire or thick-wire winding inside allows for very high current handling in a small footprint. --- ### 4. Typical Applications Because of its high current rating and low DCR, this part is commonly found in: * **Voltage Regulator Modules (VRM):** Powering CPUs and GPUs in laptops and servers. * **DC-DC Converters:** High-efficiency point-of-load (POL) converters. * **Battery Powered Systems:** Where low resistance is critical to saving power. ---