The **M5RS-54-R** is a high-performance, shielded power inductor manufactured by **Coiltronics (now part of Eaton)**. It is specifically designed for high-density power conversion applications where efficiency and thermal management are critical. --- ### ## Technical Specifications Below are the primary electronic characteristics of the M5RS-54-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.54 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | ~25.0 Amperes | | **Saturation Current (Isat)** | ~40.0 Amperes | | **DC Resistance (DCR)** | ~1.10 mΩ (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | --- ### ## Key Electronic Features 1. **Magnetically Shielded:** The part features a closed magnetic path construction. This minimizes Electromagnetic Interference (EMI), which is essential for densely packed PCBs where components are sensitive to stray magnetic fields. 2. **Low DCR (Direct Current Resistance):** With a resistance value around 1.10 mΩ, this part minimizes power loss due to heat (I²R losses), allowing for higher efficiency in power supplies. 3. **High Saturation Current:** The "Isat" rating indicates the point where inductance drops by a specific percentage. The M5RS-54-R is designed to handle high peak currents without the magnetic core "saturating," maintaining stable performance during load spikes. 4. **Flat-Wire / Rugged Construction:** The "RS" series often utilizes flat-wire technology which reduces skin effect losses at high frequencies and allows for a more compact physical footprint. --- ### ## Applications The M5RS-54-R is typically found in the following electronic circuits: * **Multi-phase Buck Regulators:** Used in CPU/GPU power modules (VRMs). * **DC-DC Converters:** High-current point-of-load (POL) converters. * **Voltage Regulator Modules:** Powering high-end servers and networking equipment. * **Battery Powered Systems:** Where high efficiency is required to extend battery life. --- ### ## Circuit Symbol & Wiring In a schematic, this part is represented as a standard inductor with two parallel lines above the coil symbol, indicating a ferrite core. ```spice * SPICE model approximation L1 Input Output 0.54u R_series Input Output 0.0011 ; DCR in Ohms ``` ---