The **SD7030-100-R** is a high-performance, low-profile, shielded surface-mount (SMD) power inductor. It is part of the SD7030 series manufactured by **Eaton (formerly Coiltronics/Bussmann)**. --- ### ## Technical Specifications Below are the primary electronic characteristics of the SD7030-100-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 10.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.038 Ω (Typical) / 0.046 Ω (Max) | | **Saturation Current ($I_{sat}$)** | 2.53 Amps | | **RMS Current ($I_{rms}$)** | 2.64 Amps | | **Operating Temperature** | -40°C to +125°C | | **Dimensions** | 7.0mm x 7.0mm x 3.0mm | --- ### ### Key Features 1. **Magnetic Shielding:** The part is ferrite-shielded, which minimizes Electromagnetic Interference (EMI). This makes it ideal for densely packed circuit boards where components are close to sensitive signals. 2. **Ferrite Core Material:** Provides high efficiency and low core losses, especially in high-frequency switching applications. 3. **Construction:** It features a robust design with a flat top surface, making it suitable for high-speed automated "pick and place" assembly. 4. **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets RoHS environmental standards. --- ### ### Typical Applications This inductor is commonly used in DC-DC converters and power management circuits for: * **Computing:** Laptops, servers, and motherboards. * **Consumer Electronics:** Handheld devices, LCD displays, and gaming consoles. * **Industrial:** Power supplies and battery-powered regulators. * **Telecommunications:** Network switches and base stations. --- ### ### Code Example: Calculating Voltage Drop To understand how this part behaves in a circuit, you can calculate the voltage drop across the inductor due to its internal resistance (DCR) using Ohm's Law ($V = I \times R$): ```python # Constants for SD7030-100-R inductance_uh = 10.0 dcr_max_ohms = 0.046 rms_current_amps = 2.64 def calculate_voltage_drop(current, resistance): return current * resistance v_drop = calculate_voltage_drop(rms_current_amps, dcr_max_ohms) print(f"Voltage drop at max RMS current: {v_drop:.4f} Volts") ```