The **SDR2207-R80ML** is a high-power, surface-mount (SMD) power inductor manufactured by Bourns. It is part of the SDR2207 series, known for its high current capability and relatively small footprint. --- ### 1. Technical Specifications The following table summarizes the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.8 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | 0.0094 Ω (Max) | | **Saturation Current ($I_{sat}$)** | 22.0 A | | **Heating Current ($I_{rms}$)** | 11.0 A | | **Test Frequency** | 100 kHz / 0.1 V | | **Operating Temperature** | -40 °C to +125 °C | | **Package Size** | 22.0 x 15.0 x 7.0 mm | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying the specific variant: * **SDR**: Series name (Non-shielded Power Inductor). * **2207**: Dimensions (Approx. 22mm diameter/width, 7mm height). * **R80**: Inductance value. "R" acts as a decimal point (0.80 µH). * **M**: Tolerance (M = ±20%). * **L**: Lead-free/RoHS compliant. --- ### 3. Key Electronic Features * **Non-Shielded Design:** This inductor uses an unshielded drum core construction. While this allows for higher saturation currents in a smaller package, it may emit more electromagnetic interference (EMI) than shielded types. * **High Saturation Current:** With an $I_{sat}$ of 22A, this part can handle significant current spikes without the inductance dropping more than 10-20% from its initial value. * **Low DCR:** The very low internal resistance (0.0094 Ω) minimizes power loss and heat generation, making it highly efficient for power conversion. --- ### 4. Common Applications Due to its high current handling and low inductance, the SDR2207-R80ML is typically found in: 1. **DC-DC Converters:** High-frequency switching regulators. 2. **Power Supplies:** Input/output filtering for telecommunications and industrial equipment. 3. **Battery Powered Circuits:** Used where high efficiency is critical to extend battery life. 4. **LCD Displays:** Powering the backlight and control circuitry.