The **SRP1235-R33M** is a high-power, shielded power inductor manufactured by Bourns. It is part of the SRP1235 series, specifically designed for high-current applications in consumer and industrial electronics. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's specifications: | Code Segment | Meaning | | :--- | :--- | | **SRP** | Series Name (High Current Shielded Power Inductor) | | **1235** | Physical Size (Approx. 13.5 mm x 12.5 mm x 3.5 mm) | | **R33** | Inductance Value: **0.33 µH** | | **M** | Tolerance: **±20%** | --- ### 2. Technical Specifications The SRP1235-R33M is characterized by low DC resistance and high saturation current. | Parameter | Value | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% | | **DCR (DC Resistance)** | 1.1 mΩ (typical) / 1.3 mΩ (max) | | **Irms (Heating Current)** | 42 Amperes | | **Isat (Saturation Current)** | 62 Amperes | | **Operating Temp** | -45°C to +165°C | | **Shielding** | Shielded (Metal Alloy powder core) | --- ### 3. Key Features & Construction * **Shielded Construction:** It uses a metal alloy powder core which provides excellent EMI (Electromagnetic Interference) shielding, making it suitable for high-density PCB layouts. * **Low Buzz Noise:** The molded construction minimizes audible noise when operating at high frequencies. * **High Thermal Stability:** With a maximum operating temperature of 165°C, it is highly reliable in harsh thermal environments. * **AEC-Q200 Compliance:** Most parts in this series are qualified for automotive use, ensuring high durability. --- ### 4. Typical Applications Due to its high current handling and low profile, it is commonly found in: * **DC/DC Converters:** For distributed power systems. * **Computing:** Powering CPUs, GPUs, and high-end servers. * **Automotive Electronics:** Infotainment and driver assistance systems. * **Battery Powered Devices:** High-efficiency power management modules. --- ### 5. Footprint (Mechanical Data) The "1235" designation indicates a footprint of roughly **13.5 x 12.5 mm** with a height of **3.5 mm**. ```markdown Dimensions (Approx): L: 13.5 mm (± 0.5) W: 12.5 mm (± 0.3) H: 3.5 mm (± 0.2) ``` ---