GRM21A5C2E221JW01D

# Product Description: GRM21A5C2E221JW01D The GRM21A5C2E221JW01D 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, a family of surface-mount ceramic capacitors widely used in consumer electronics, industrial equipment, telecommunications, and automotive applications. Multilayer ceramic capacitors like this unit are fundamental building blocks in modern electronic circuits. They function as energy storage devices, signal filtering components, and noise decoupling elements on printed circuit boards. The ceramic dielectric material allows for compact sizing while maintaining reasonable capacitance values, making MLCCs ideal for space-constrained designs where engineers need reliable performance in a small footprint. The part number structure indicates this is a 0805-size component—a standard SMD (surface-mount device) package measuring 2.0mm by 1.25mm. This size is one of the most common in industrial and consumer electronics due to its balance between miniaturization and ease of handling during assembly. The 0805 package is compatible with modern pick-and-place manufacturing equipment and hand-soldering operations, making it accessible across various production volumes. Murata's GRM series capacitors are designed for general-purpose applications requiring stable performance across operating temperature ranges typical in industrial environments. These capacitors are commonly specified in power supply filtering, AC coupling, decoupling circuits, and signal path applications where reliability and cost-effectiveness are priorities. Engineers typically select this exact part number when their design requires the specific capacitance value encoded in the part number, combined with the proven quality and consistency of Murata's manufacturing. Murata MLCCs are known for tight tolerances, low ESR (equivalent series resistance) characteristics in their class, and stable performance across temperature variations. This makes them particularly suitable for applications where circuit performance must remain consistent throughout the operating environment's temperature range. The GRM series also benefits from wide industry adoption, extensive design support documentation, and multiple qualified suppliers, reducing supply chain risk on production programs. For engineers working on designs requiring board-level reliability certifications or compliance with automotive or industrial standards, Murata's established quality track record and manufacturing certifications often make their components the preferred specification. This component would typically be found in supporting roles throughout complex electronic assemblies—filtering power rails, stabilizing reference circuits, or protecting sensitive inputs from high-frequency noise. Its small size and standardized package allow it to be placed densely on circuit boards without consuming significant real estate.