The **SRP1250-R68M** is a high-current, shielded power inductor manufactured by Bourns. It is part of the SRP1250 series, which is designed for high-density power applications where space and efficiency are critical. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's core characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **SRP** | Series Name | High Current Shielded Power Inductor | | **1250** | Size/Dimensions | Approx. 13.5 x 12.5 x 6.0 mm | | **R68** | Inductance Value | 0.68 µH (Microhenries) | | **M** | Tolerance | ±20% | --- ### 2. Technical Specifications Below are the electrical and physical parameters for the SRP1250-R68M: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.68 µH | | **Irms (Heating Current)** | 28.0 A (Typical rise of 40°C) | | **Isat (Saturation Current)** | 49.0 A (Typical drop of 20%) | | **DCR (DC Resistance)** | 2.5 mΩ (Max) | | **Operating Temperature** | -40 °C to +125 °C | | **Shielding** | Shielded (Carbonyl Iron Powder Core) | | **Termination** | Lead-free (RoHS compliant) | --- ### 3. Key Features * **Magnetically Shielded:** The construction uses a metal alloy powder core that minimizes electromagnetic interference (EMI) and provides low radiation. * **High Saturation Current:** It can handle high peak currents without the inductance dropping significantly, making it ideal for transient loads. * **Low DCR:** The low DC resistance ensures minimal power loss through heat, increasing the overall efficiency of the power supply. * **Construction:** These are molded inductors, which offer better structural integrity and acoustic noise reduction compared to traditional wire-wound ferrite inductors. --- ### 4. Typical Applications The SRP1250-R68M is commonly found in power management circuits such as: 1. **DC/DC Converters:** Used in Buck, Boost, and SEPIC topologies. 2. **GPU/CPU Power:** High-current multiphase regulators for processors. 3. **Server Infrastructure:** Distributed power systems and high-wattage power supplies. 4. **Automotive Electronics:** Driver assistance systems and infotainment (though ensure AEC-Q200 compliance if used in safety-critical paths). ---