The **LPE-61-R** is a specific electronic component primarily recognized as a **Power Inductor** (Surface Mount Device - SMD) manufactured by companies like Sumida. It is widely used in power management circuits due to its compact size and efficiency. --- ## 1. Technical Specifications The "LPE" series generally follows a standardized set of electrical characteristics. Below are the typical parameters for the 61-R series: | Parameter | Typical Value / Range | | :--- | :--- | | **Component Type** | SMD Power Inductor | | **Inductance Range** | 1.0 µH to 1000 µH (depending on specific sub-code) | | **Tolerance** | ±20% (Standard) | | **Operating Temperature** | -40°C to +85°C | | **Core Material** | Ferrite | | **Shielding** | Non-shielded / Semi-shielded | --- ## 2. Structural Composition The LPE-61-R consists of three primary electronic elements: 1. **Ferrite Core:** A drum-shaped magnetic core that provides high permeability, allowing the component to store energy in a magnetic field efficiently. 2. **Copper Winding:** Enameled copper wire wound around the core. The number of turns determines the specific inductance value. 3. **Terminal Electrodes:** Solderable pads (usually Tin/Silver/Copper plated) designed for reflow soldering onto a Printed Circuit Board (PCB). --- ## 3. Key Electronic Functions The LPE-61-R serves several critical roles in a circuit: ### A. Energy Storage In DC-DC converters (Buck or Boost), the inductor stores energy during the "on" cycle of a switch and releases it during the "off" cycle to maintain a steady output voltage. ### B. Noise Filtering (Choking) It acts as a low-pass filter, blocking high-frequency Alternating Current (AC) noise while allowing Direct Current (DC) to pass through. This is essential for cleaning up power lines in sensitive electronics. ### C. Impedance Matching In some RF or signal applications, these inductors are used to match the impedance between different stages of a circuit to ensure maximum power transfer. --- ## 4. Common Applications * **Portable Electronics:** Smartphones, tablets, and handheld gaming consoles. * **Power Supplies:** Small DC-DC converter modules. * **Consumer Electronics:** LCD televisions and digital cameras. * **Computer Peripherals:** Hard drives and network cards. ---