The part number **703-R56-R** typically refers to a high-current, shielded surface-mount (SMD) power inductor. These components are essential in modern power electronics for energy storage and noise filtering. Below is a detailed breakdown of its characteristics and technical specifications. --- ## 1. Component Overview The "R56" in the part number indicates the inductance value, while the "R" at the end usually signifies RoHS compliance or a specific packaging type (like Tape & Reel). | Feature | Description | | :--- | :--- | | **Component Type** | Power Inductor (Fixed) | | **Inductance** | 0.56 µH (Microhenries) | | **Mounting Type** | SMD/SMT (Surface Mount Technology) | | **Construction** | Shielded (Magnetic shielding to reduce EMI) | --- ## 2. Technical Specifications While exact specs can vary slightly by manufacturer (such as *Coiltronics/Eaton* or *Pulse Electronics*), the **703 series** generally follows these parameters: ### Electrical Characteristics * **Inductance:** 0.56 µH. * **Tolerance:** Typically ±20%. * **DC Resistance (DCR):** Extremely low (measured in milliohms), allowing for high efficiency and minimal heat generation. * **Saturation Current ($I_{sat}$):** High capacity, often ranging between 10A to 30A depending on the specific case size. * **Operating Temperature:** Generally rated for -40°C to +125°C. ### Physical Attributes * **Shielding:** The core is enclosed in a magnetic material to prevent electromagnetic interference (EMI) from affecting nearby components. * **Form Factor:** Square or rectangular footprint with low-profile heights to fit into compact mobile or industrial devices. --- ## 3. Common Applications These inductors are designed for high-frequency DC-DC conversion. Common use cases include: 1. **Voltage Regulator Modules (VRMs):** Found on computer motherboards and server cards to step down voltage for CPUs/GPUs. 2. **Point-of-Load (POL) Converters:** Used in telecommunications equipment to provide precise power to local circuits. 3. **Battery Powered Devices:** High efficiency makes them ideal for extending battery life in laptops and tablets. 4. **Automotive Electronics:** Used in infotainment and driver assistance systems (if AEC-Q200 qualified). --- ## 4. Part Number Breakdown (Typical) | Segment | Meaning | | :--- | :--- | | **703** | Series/Case Size Code (e.g., 7.0mm x 7.0mm x 3.0mm) | | **R56** | Inductance Value: R denotes the decimal point (0.56) | | **-R** | RoHS Compliant / Lead-Free | ---