The **SRP4012CC-R22M** is a high-current, shielded power inductor manufactured by Bourns. It is part of the SRP4012CC series, designed primarily for DC/DC converter applications where high efficiency and compact size are required. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the specific characteristics of the component: | Segment | Meaning | Value | | :--- | :--- | :--- | | **SRP** | Series Name | High current power inductor | | **4012** | Dimensions | Approx. 4.0 x 4.0 x 1.2 mm | | **CC** | Material/Design | Carbonyl powder core | | **R22** | Inductance Value | 0.22 µH | | **M** | Tolerance | ±20% | --- ### 2. Key Technical Specifications Below are the electrical and physical parameters for this specific part: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.22 µH | | **DCR (Direct Current Resistance)** | 6.6 mΩ (Typical) / 8.2 mΩ (Max) | | **Irms (Heating Current)** | 9.5 Amperes | | **Isat (Saturation Current)** | 12.5 Amperes | | **Operating Temperature** | -55°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 3. Core Features & Technology * **Carbonyl Powder Core:** The inductor uses a metal alloy powder core. This construction allows for "soft saturation," meaning the inductance drops gradually as current increases, rather than dropping off sharply. * **Low Profile:** With a height of only 1.2 mm, it is ideal for ultra-thin electronic devices like tablets and slim laptops. * **Shielded Construction:** The molded construction minimizes electromagnetic interference (EMI), which is critical for densely packed circuit boards. * **High Current Handling:** Despite its small footprint, it can handle a saturation current of up to 12.5A, making it suitable for high-performance power stages. --- ### 4. Common Applications This component is typically found in the following circuits: 1. **DC/DC Converters:** Voltage regulation in smartphones and portable electronics. 2. **GPU/CPU Power Supply:** Providing stable current to high-speed processors. 3. **Battery Powered Devices:** High-efficiency power management systems. 4. **SSD Drives:** Used in the power rails of solid-state storage.