The **SCIHP0750-R33** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converters and power supply modules. It belongs to the "molded" category of inductors, known for their compact size and excellent magnetic shielding. --- ### 1. Key Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Inductance** | 0.33 µH | Measured at 100kHz, 1.0V | | **Tolerance** | ±20% | Standard deviation for power inductors | | **DC Resistance (DCR)** | ~1.1 mΩ (Max) | Very low resistance to minimize power loss | | **Saturation Current (Isat)** | ~40 - 50 A | Current at which inductance drops by 20-30% | | **Heating Current (Irms)** | ~25 - 30 A | Current causing a 40°C temperature rise | | **Operating Temp** | -55°C to +125°C | Suitable for industrial applications | | **Dimensions** | 7.5 x 7.0 x 5.0 mm | Length x Width x Height | --- ### 2. Component Composition & Structure * **Core Material:** Iron powder or alloy powder core. This "molded" construction allows for higher saturation currents compared to traditional ferrite drum cores. * **Shielding:** The component is magnetically shielded. This minimizes Electromagnetic Interference (EMI) with surrounding components on the PCB. * **Terminals:** Lead-free (RoHS compliant) construction with tinned copper pads for easy SMT (Surface Mount Technology) soldering. --- ### 3. Common Applications Due to its high current handling and low profile, the SCIHP0750-R33 is typically found in: 1. **Voltage Regulator Modules (VRMs):** Powering CPUs and GPUs in laptops and servers. 2. **Point of Load (POL) Converters:** Converting high-voltage bus power to lower voltages for digital ICs. 3. **Battery Powered Devices:** High-efficiency DC-DC conversion to extend battery life. 4. **Automotive Electronics:** Infotainment and lighting control systems. --- ### 4. Part Number Breakdown Understanding the code `SCIHP0750-R33`: * **SCIHP:** Series name (High Current Power Inductor). * **0750:** Physical size (Approx. 7mm x 5mm height). * **R33:** Inductance value ($0.33\mu H$). The "R" acts as a decimal point.