GRM21A5C2D330JW01D

The GRM21A5C2D330JW01D is a multilayer ceramic capacitor (MLCC) manufactured by Murata, one of the world's leading capacitor producers. This component belongs to the GRM21 family, which represents a standard surface-mount capacitor series designed for widespread use in consumer electronics, industrial equipment, and telecommunications applications. Multilayer ceramic capacitors like this part are fundamental passive components used to store and release electrical energy, filter noise, couple signals, and stabilize power supplies across countless electronic circuits. The GRM21 series is particularly valued for its reliability, compact form factor, and cost-effectiveness, making it a default choice for engineers designing everything from portable consumer devices to industrial control systems. The "21" designation in the part number indicates this capacitor uses a 1206 package size (approximately 3.2mm × 2.5mm), which represents a mid-range form factor. This size offers a practical balance between component density and ease of handling during manufacturing and rework. The package is well-suited for automated assembly and remains hand-soldered or reworked when necessary, making it popular in both high-volume production and prototype development environments. The alphanumeric suffix in the part number encodes important performance characteristics. Murata's coding system specifies the dielectric material (typically X7R or similar for the GRM21 line), voltage rating, capacitance value, tolerance, temperature coefficient, and other environmental specifications. Components in this series are designed to operate across standard industrial temperature ranges and provide stable performance under typical circuit conditions. Engineers typically specify this exact part number when they need consistent, proven performance from a widely distributed component. The GRM21 series benefits from extensive qualification across major OEM and contract manufacturer processes, reducing design risk and supply chain concerns. The part is commonly used in bypass and decoupling applications near integrated circuits, filtering in power distribution networks, signal coupling stages, and general energy storage functions. The ceramic material composition and internal construction of MLCCs in this series provide excellent frequency response characteristics, low equivalent series resistance (ESR), and minimal self-inductance—qualities essential for high-speed digital circuits and RF applications. This makes the GRM21A5C2D330JW01D suitable for both DC blocking and AC filtering roles. For engineers evaluating alternatives, this Murata component represents the mainstream solution: widely available through multiple distribution channels, supported by comprehensive technical documentation, proven in millions of deployed products, and cost-competitive within the MLCC market segment. Its selection ensures compatibility with standard manufacturing processes and long-term supply confidence.