GRM21B7U1H393JA01L

The GRM21B7U1H393JA01L is a multilayer ceramic capacitor (MLCC) manufactured by Murata, one of the world's leading producers of passive electronic components. This capacitor is part of Murata's GRM series, a comprehensive family of surface-mount ceramic capacitors widely used across consumer electronics, industrial equipment, telecommunications infrastructure, and automotive applications. Multilayer ceramic capacitors like this component function as energy storage and filtering devices in electronic circuits. They are essential for smoothing voltage ripple, decoupling power supply noise, blocking DC current while passing AC signals, and stabilizing circuit performance across a range of operating conditions. The compact surface-mount package makes this capacitor ideal for modern PCB designs where space efficiency and automated assembly are critical requirements. The part number encoding reveals key characteristics of this specific capacitor. The "GRM21" designation indicates it belongs to Murata's standard series with a 1206 metric package size (roughly 3.2mm × 2.5mm), making it a mid-range SMD capacitor suitable for both high-density and standard applications. The "U" in the part number specifies the dielectric material type, while subsequent characters indicate voltage rating, capacitance value, tolerance class, and termination specifications. Engineers typically select this exact part number when they require a capacitor that balances performance, reliability, and cost-effectiveness. Murata MLCCs are known for consistent quality, tight capacitance tolerances, and stable behavior across temperature variations and voltage operating ranges. The GRM series has established itself as a trusted standard in industrial and commercial applications due to its proven track record and widespread availability through distribution channels. This capacitor is commonly found in power management circuits, signal processing stages, RF filtering applications, and general-purpose decoupling throughout electronic equipment. The surface-mount format allows for efficient placement on modern circuit boards using standard pick-and-place assembly equipment, reducing manufacturing costs and improving production throughput compared to through-hole alternatives. When specifying this component, engineers benefit from Murata's comprehensive technical documentation, established manufacturing processes, and long-term availability. The GRM series maintains consistent performance characteristics that simplify circuit design validation and allow for confidence in long-term supply chain planning. For applications requiring a proven, mainstream MLCC solution with the reliability standards expected in industrial and professional-grade equipment, this part represents a mainstream engineering choice backed by Murata's reputation for quality and consistency.