The **SRP1245CC-R15M** is a high-current shielded power inductor manufactured by Bourns. It is designed for high-density power applications where efficiency and thermal stability are critical. --- ### 1. Technical Specifications The part number itself follows a specific naming convention that defines its electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.15 µH | | **Inductance Tolerance** | ±20% (M) | | **Irms (Heating Current)** | 45.0 Amperes | | **Isat (Saturation Current)** | 62.0 Amperes | | **DCR (DC Resistance)** | 0.55 mΩ (Nominal) | | **Operating Temperature** | -55 °C to +150 °C | | **Shielding** | Fully Shielded (Magnetic) | --- ### 2. Key Construction Features The "CC" series represents a specific advancement in Bourns' inductor technology: * **Carbonyl Powder Core:** Unlike standard ferrite cores, this inductor uses a metal alloy/carbonyl powder. This provides a "soft" saturation characteristic, meaning the inductance drops gradually rather than abruptly as current increases. * **Shielded Construction:** The inductor is encapsulated, which minimizes EMI (Electromagnetic Interference) and protects surrounding components from magnetic fields. * **Flat Wire Technology:** It often utilizes flat copper wire inside. This increases the surface area for current flow (reducing the skin effect) and allows for a lower DCR (DC Resistance), resulting in less heat generation. --- ### 3. Application Use Cases Due to its high current handling and low profile (13.5 x 12.5 x 4.5 mm), it is commonly used in: 1. **Voltage Regulator Modules (VRMs):** Found in high-end motherboards and servers. 2. **DC/DC Converters:** For high-efficiency power supplies. 3. **Graphic Cards:** Managing power delivery to high-performance GPUs. 4. **Telecommunications:** In base stations and networking equipment requiring high power density. --- ### 4. Part Number Breakdown To better understand similar parts in the series: `SRP` `1245` `CC` - `R15` `M` * **SRP:** Series name (Shielded Power Inductor). * **1245:** Physical dimensions (~12mm width, 4.5mm height). * **CC:** Material/Design code (Carbonyl Core). * **R15:** Inductance value (0.15 µH). * **M:** Tolerance (±20%).