GRM21A5C2E100JW01D

The GRM21A5C2E100JW01D is a multilayer ceramic capacitor (MLCC) manufactured by Murata, one of the world's leading suppliers of passive electronic components. This surface-mount capacitor is designed for general-purpose coupling, decoupling, and filtering applications across a wide range of industrial and commercial electronics. Multilayer ceramic capacitors like this model are fundamental building blocks in modern electronic circuits. They store electrical energy in an electric field and are commonly used to smooth power supply ripple, block DC while passing AC signals, filter high-frequency noise, and stabilize voltage in integrated circuit power rails. The GRM21A5C2E100JW01D belongs to Murata's GRM series, which is widely recognized in the industry for consistent quality and reliable performance in cost-sensitive applications. The part number itself encodes important information about the component. The "21A" designation indicates a 1206 metric package size (3.2mm × 2.5mm), which is a standard surface-mount footprint that offers good balance between compact size and ease of handling during manufacturing. This package size is popular in space-constrained applications while remaining accessible for both automated assembly and manual rework. The "5C" portion of the code refers to the dielectric material type, which influences the capacitor's voltage and temperature performance characteristics. Engineers typically specify this exact part for several reasons. Murata MLCCs are known for reliability and consistency across production batches, which reduces design risk in mission-critical applications. The 1206 package size provides excellent versatility—it's small enough for dense PCB layouts but large enough to handle standard manufacturing processes without special equipment. This part is suitable for general industrial applications including power management circuits, automotive electronics (non-high-reliability grades), telecommunications equipment, consumer electronics, and various instrumentation devices. The GRM21A5C2E100JW01D represents a practical choice for engineers who need a dependable ceramic capacitor without specialized performance requirements such as extreme temperature stability or ultra-low ESR characteristics. Its widespread availability in the supply chain and established manufacturing infrastructure make it cost-effective for volume production while maintaining the quality standards expected in professional electronics manufacturing. For applications requiring specific electrical characteristics—such as precise capacitance values, voltage ratings, temperature coefficients, or reliability ratings—engineers should verify this component's specifications match their circuit design requirements before final selection.