GRM31A7U2J221JW31D

The GRM31A7U2J221JW31D is a multilayer ceramic capacitor (MLCC) manufactured by Murata, one of the world's leading producers of passive electronic components. This part belongs to Murata's GRM series, which represents a broad family of general-purpose ceramic capacitors widely used across consumer electronics, industrial control systems, telecommunications infrastructure, and automotive applications. Multilayer ceramic capacitors like this component are fundamental building blocks in modern electronic circuits, serving functions such as power supply filtering, signal coupling and decoupling, noise suppression, and energy storage in switching power supplies. The GRM31A7U2J221JW31D features a 1206 package format, which is one of the most common surface-mount device (SMD) sizes in the industry. This standardized rectangular package makes it compatible with automated assembly equipment and allows for high-density circuit board layouts without requiring specialized mounting procedures. The part number itself encodes important electrical characteristics. The "U2J" designation within the part number indicates this capacitor operates at 50V DC, making it suitable for moderate voltage applications found in industrial power distribution, automotive electronics, and consumer device power management circuits. The "221" in the part number indicates a capacitance value of 220 nanofarads (220nF), a commonly specified value for general-purpose filtering and coupling applications. Murata's GRM series capacitors are specified across diverse industries because they offer reliable performance combined with cost-effectiveness and proven long-term availability. Engineers often select components from this established family when designing products that require high manufacturing volumes and consistent supply chain reliability. The ceramic dielectric material provides stable performance across temperature ranges typical in industrial and consumer environments. This particular configuration—1206 package, 50V rating, and 220nF capacitance—makes the GRM31A7U2J221JW31D particularly valuable in applications requiring compact board space while maintaining adequate voltage headroom and capacitance values for power distribution networks, input filtering stages, and high-frequency decoupling in digital and analog circuits. The standardized nature of the GRM series means engineers can confidently specify this part knowing it will be available from multiple distribution channels, compatible with standard PCB assembly processes, and representative of mature, field-proven component technology suitable for production environments requiring high reliability and minimal obsolescence risk.