The VJ1812A821JXGAT4X is a surface-mount multilayer ceramic capacitor (MLCC) from Vishay. It's designed for a wide variety of applications requiring stable capacitance and high reliability.

Applications:

• Bypass and decoupling in power supplies
• Filtering in electronic circuits
• High-frequency applications in RF circuits
• Timing circuits
• General-purpose applications where stable capacitance is needed

Features:

• High capacitance value (820pF)
• X7R dielectric material
• Voltage rating of 100V
• EIA case size 1812
• Surface mount technology (SMT)
• RoHS compliant

Benefits:

• Stable capacitance over temperature variations due to X7R dielectric
• High voltage rating allows for use in demanding applications
• Small form factor saves board space
• Reliable performance in a variety of environments
• Suitable for automated assembly processes

Additional Details:

The X7R dielectric ensures that the capacitor's capacitance changes by no more than ±15% over the operating temperature range of -55°C to +125°C. The 1812 case size refers to the dimensions of the capacitor, which are 0.18 inches in length and 0.12 inches in width. This capacitor is designed for reflow soldering and can withstand high temperatures during the soldering process. The termination finish is typically tin or nickel barrier/tin plating.

This MLCC offers a combination of high capacitance, stable performance, and small size, making it a suitable choice for various electronic circuits. It's frequently used in applications where stable capacitance is essential for proper circuit operation.