12105C475M4T2A

The 12105C475M4T2A is a multilayer ceramic capacitor manufactured by AVX, a leading supplier of passive electronic components. This component falls within the category of general-purpose ceramic capacitors, devices essential to modern electronics for energy storage, filtering, coupling, and decoupling applications across diverse industries. Multilayer ceramic capacitors like this part are constructed from alternating layers of ceramic dielectric material and metal electrodes, then stacked and fired into a single monolithic block. This construction method enables manufacturers to achieve high capacitance values in compact physical packages, making them ideal for space-constrained applications. The "12105" designation indicates this capacitor uses a 1210 surface mount package size, a standard footprint widely recognized in the electronics industry. The "C" in the part number refers to the temperature coefficient classification, which relates to how the capacitor's capacitance value changes across operating temperature ranges—important for designers working in environments with temperature fluctuations. These ceramic capacitors serve critical roles in power supply circuits, where they filter noise and stabilize voltage rails. They are commonly found in DC-DC converters, audio amplifiers, RF circuits, and general signal conditioning applications. Engineers frequently specify ceramic capacitors for decoupling applications near integrated circuits, where they suppress high-frequency noise generated by digital logic and other switching elements. The compact 1210 package makes this component particularly valuable in modern PCB designs where board real estate is at a premium, yet performance cannot be compromised. The AVX manufacturing heritage ensures consistency in quality and reliability. AVX capacitors undergo rigorous testing protocols to meet industrial and commercial standards, making them suitable for applications ranging from consumer electronics to industrial control systems and telecommunications equipment. The multilayer ceramic construction provides excellent electrical performance characteristics including low equivalent series resistance and inductance, which helps minimize impedance across a broad frequency range. Engineers might select the 12105C475M4T2A specifically when they require a capacitor that balances physical size constraints with electrical performance needs. The 1210 package offers a middle ground between smaller 0805 packages with lower capacitance ratings and larger 1812 packages that consume additional board space. This makes it particularly popular in compact consumer devices, portable instrumentation, and space-optimized industrial electronics where standard voltage and capacitance values are sufficient for circuit requirements. Its established presence in the supply chain and compatibility with standard PCB assembly processes make it a practical choice for production designs.