The **CMLB053T-R22MS** is a high-performance, surface-mount (SMD) power inductor commonly used in DC/DC converter applications. It belongs to the **CMLB** series, which is characterized by its molded metal powder construction, providing excellent magnetic shielding and high saturation currents. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the component: | Property | Value | | :--- | :--- | | **Inductance** | 0.22 µH | | **Tolerance** | ±20% (M) | | **DC Resistance (DCR)** | ~3.5 mΩ (Max) | | **Saturation Current (Isat)** | ~21.0 A | | **Heating Current (Irms)** | ~14.0 A | | **Case Size** | 053T (approx. 5.4 x 5.2 x 3.0 mm) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Key Features * **Molded Construction:** The inductor uses a metal powder core molded directly around the wire. This design eliminates the "buzz" noise associated with traditional ferrite cores and provides a "soft" saturation characteristic. * **Magnetic Shielding:** Because of its construction, it has very low magnetic flux leakage, reducing interference with surrounding components (EMI). * **High Efficiency:** The extremely low DC resistance (DCR) minimizes power loss due to heat, making it ideal for high-efficiency power supplies. * **Compact Footprint:** The 053T size (5x5mm range) allows for high power density in space-constrained PCB designs. --- ### 3. Part Number Breakdown The nomenclature typically follows this structure: 1. **CMLB**: Series Name (Molded Power Inductor). 2. **053T**: Dimensions (Width/Length and Height profile). 3. **R22**: Inductance Value (R22 = 0.22 microhenries). 4. **M**: Tolerance (M = ±20%). 5. **S**: Internal code/Finish (often denotes standard lead-free/RoHS plating). --- ### 4. Common Applications This part is frequently found in: * **Voltage Regulator Modules (VRM):** For CPUs and GPUs in laptops and servers. * **DC/DC Converters:** Point-of-load (POL) power supplies. * **Portable Electronics:** Smartphones, tablets, and high-end handheld devices where efficiency and low profile are critical. * **Automotive Infotainment:** Where high-temperature stability and low EMI are required.