The **PCSDR73-R56M-RC** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and power supply filtering applications. It is part of a series known for its shielded construction and high current handling. --- ### 1. Technical Specifications Below are the primary electronic characteristics of this specific component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.56 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | ~11.6 mΩ (max) | | **Rated Current (Saturation)** | ~7.70 A | | **Dimensions (LxWxH)** | 7.3 x 7.3 x 3.5 mm | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 2. Breakdown of the Part Number The nomenclature provides specific details about the component's build: * **PCSDR**: Series name (Power Inductor, Shielded). * **73**: Physical size code (approx. 7mm x 3mm height). * **R56**: The inductance value. "R" acts as a decimal point, resulting in **0.56 µH**. * **M**: Tolerance code, representing **±20%**. * **RC**: Compliance code, typically indicating **RoHS Compliant**. --- ### 3. Key Electronic Functions The PCSDR73-R56M-RC serves several critical roles in a circuit: 1. **Energy Storage:** In switching regulators, it stores energy in its magnetic field during the "on" cycle and releases it during the "off" cycle to maintain a steady output voltage. 2. **Noise Suppression:** It acts as a low-pass filter, blocking high-frequency AC noise while allowing DC current to pass through. 3. **Magnetic Shielding:** Because it is shielded, it minimizes **Electromagnetic Interference (EMI)**, preventing the inductor's magnetic field from interfering with neighboring sensitive components on the PCB. --- ### 4. Common Applications Due to its low inductance and high current rating, this part is ideal for: * **Voltage Regulator Modules (VRMs)** for CPUs and GPUs. * **High-efficiency DC-DC converters** (Buck, Boost, or SEPIC). * **Battery-powered devices** where compact size and low DCR are required to minimize power loss. ---