GRM31A5C2H390JW01D

The GRM31A5C2H390JW01D 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, which represents mainstream general-purpose capacitors designed for a broad range of industrial and consumer electronics applications. Multilayer ceramic capacitors like this model are fundamental building blocks in modern electronics. They function to store electrical energy, filter signals, decouple power supplies, and stabilize voltage across circuits. The GRM31 designation places this component in Murata's 1206 package family (3.2mm x 2.5mm footprint), a widely-used surface-mount size that balances ease of assembly with reasonable capacitance density. The "2H" coding in the part number indicates this capacitor operates at 50V DC working voltage, making it suitable for applications that require moderate voltage ratings. The "390" specification references the capacitance value of 39 picofarads, positioning this part in the lower-capacitance range of MLCCs. This low-capacitance rating makes it particularly useful in high-frequency circuits, RF applications, and precision analog designs where small, stable capacitive values are critical for maintaining signal integrity and resonant frequency accuracy. Engineers typically specify the GRM31A5C2H390JW01D in applications including signal coupling and decoupling networks, impedance matching circuits, resonant tank circuits, and high-frequency filtering applications in telecommunications, audio equipment, test instrumentation, and industrial control systems. The C2H dielectric type provides stable performance across temperature ranges typical for industrial use, with predictable behavior in both consumer and industrial temperature operating windows. The 1206 package offers several practical advantages: the larger footprint compared to smaller 0402 or 0603 packages makes this component easier to handle during manufacturing and repair, less susceptible to mechanical stress, and simpler for rework operations. This makes it a preferred choice for industrial applications where reliability and serviceability matter as much as miniaturization. Murata's GRM series MLCCs are manufactured to stringent quality standards with high yield rates and excellent batch consistency, making them reliable for volume production. The "W01D" suffix indicates the specific manufacturing variant and packaging configuration, ensuring compatibility with standard PCB assembly equipment and processes. Designers and procurement engineers select this specific part number when they need a proven, readily-available capacitor that combines small physical size with reliable performance in low-capacitance, moderate-voltage applications requiring stable behavior over extended temperature ranges.