GRM188R61A684KA61D

The GRM188R61A684KA61D is a multilayer ceramic capacitor (MLCC) manufactured by Murata, one of the world's leading suppliers of passive electronic components. This surface-mount capacitor belongs to Murata's GRM series, which is widely recognized for reliable performance across consumer electronics, industrial equipment, and telecommunications applications. Multilayer ceramic capacitors are fundamental passive components used in virtually every modern electronic device. They function to store and release electrical energy, filter noise, couple or decouple AC signals, and stabilize voltage supplies. The GRM188 designation indicates this capacitor uses a 0603 metric package size (1.6mm × 0.8mm × 0.8mm), making it suitable for compact circuit designs where space efficiency is critical. This standardized package is compatible with automated surface-mount assembly processes, reducing manufacturing costs and enabling high-volume production. The part number structure reveals important design characteristics. The "R61A" portion indicates this capacitor is rated for 10V DC working voltage, which positions it for low-voltage applications commonly found in logic circuits, microcontroller boards, and portable consumer devices. The "684K" segment specifies a 0.68µF capacitance value with a K-grade tolerance, indicating ±10% deviation from the nominal value. This capacitance range is typical for decoupling and filtering applications where precise tolerance is less critical than in timing or precision analog circuits. Murata's GRM188 series capacitors are engineered for general-purpose applications where cost-effectiveness and reliability are balanced priorities. These components are designed to operate across standard industrial temperature ranges and exhibit stable performance characteristics across their intended operating conditions. The ceramic dielectric composition provides good frequency response characteristics, making these capacitors suitable for both DC and AC applications in the audio frequency range and beyond. Engineers commonly specify this exact part when designing compact, cost-sensitive applications that require standard capacitance values and modest voltage ratings. The 0603 package offers a practical middle ground between larger packages with higher capacitance density and smaller 0402 packages that limit available values. The combination of Murata's manufacturing quality, the GRM series' proven track record in high-volume production, and the part's standard specifications make it a reliable choice for designers seeking drop-in solutions for decoupling, bypassing, or general filtering purposes in consumer and industrial electronic equipment.