GRM21A5C2E820JW01D

The GRM21A5C2E820JW01D 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 family of general-purpose ceramic capacitors widely used in consumer electronics, industrial equipment, and telecommunications applications. MLLCs are fundamental passive components found in virtually every modern electronic device. They serve critical functions including filtering, decoupling, coupling, and energy storage in circuits. The GRM series specifically is designed for mainstream applications where reliable performance at competitive cost is essential, making these capacitors a standard choice for original equipment manufacturers and contract manufacturers worldwide. The "21" designation in the part number indicates this capacitor uses a 0805 metric package size (approximately 2.0mm x 1.25mm), making it suitable for surface-mount assembly on printed circuit boards. This compact package size allows for high component density while remaining compatible with standard pick-and-place manufacturing equipment and reflow soldering processes used in modern electronics manufacturing. The "C2" specification indicates this capacitor uses a Class II dielectric material, which offers higher capacitance density compared to Class I materials. Class II ceramics are appropriate for applications where moderate variations in capacitance across temperature and voltage ranges are acceptable, such as power supply filtering, signal coupling, and general decoupling applications. These capacitors typically deliver stable performance across industrial temperature ranges. Engineers specify the GRM21A5C2E820JW01D for several practical reasons. First, Murata's established reputation ensures consistent quality and reliability across manufacturing batches. Second, the GRM series' widespread adoption means engineers can confidently rely on proven performance data from industry experience. Third, these components offer reliable availability through multiple distribution channels, reducing supply chain risk compared to more obscure alternatives. The "820J" portion of the designation provides information about the capacitance value and tolerance specification, indicating this particular part is suitable for applications requiring stable mid-range capacitance. This makes it versatile across diverse circuit designs without requiring exotic or specialized materials. Applications for this component span industrial automation systems, power management circuits, automotive electronics, HVAC controls, consumer appliances, and telecommunications infrastructure. In each application, this capacitor provides the stable, cost-effective energy storage and filtering needed for reliable operation. For engineers designing products requiring proven, widely-available multilayer ceramic capacitors in compact surface-mount packages, the GRM21A5C2E820JW01D represents a dependable specification that balances performance, manufacturability, and long-term supply reliability.