CL05B473KA5NNNC

Overview

The CL05B473KA5NNNC is a surface-mount multilayer ceramic capacitor (MLCC) designed for high-density electronic circuits. With a nominal capacitance of 0.047μF (473 code) and a 50V rating, it belongs to the widely used X7R dielectric class, which offers stable performance across a -55°C to +125°C temperature range. As a passive electronic component, it serves critical functions in power supply filtering, signal coupling, and noise suppression. The compact 0402 package (1.0mm × 0.5mm) makes it particularly valuable in space-constrained applications like mobile devices and IoT hardware.

Structure and Working Principle

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This MLCC consists of alternating layers of ceramic dielectric material and metal electrodes (typically nickel or silver-palladium), which are co-fired into a monolithic structure. The '473' in its designation indicates a capacitance of 47 × 10³ pF (0.047μF), while 'K' denotes a ±10% tolerance. The component operates by storing electrical energy in its dielectric material when voltage is applied across its terminals. Unlike electrolytic capacitors, MLCCs like the CL05B473KA5NNNC are non-polarized, meaning they can be installed in either orientation without damage.

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Key Features

The CL05B473KA5NNNC offers several technical advantages including low equivalent series resistance (ESR), which improves high-frequency performance, and excellent frequency characteristics up to several MHz. Its X7R dielectric provides stable capacitance (±15% variation) across the specified temperature range. With a typical dissipation factor of ≤2.5% and an insulation resistance of ≥10GΩ, this capacitor delivers reliable performance in demanding environments. The component is compliant with RoHS directives and suitable for lead-free soldering processes, making it environmentally friendly for modern electronics manufacturing.

Application Areas

This capacitor finds extensive use in consumer electronics such as smartphones, tablets, and wearables where board space is limited. It's equally valuable in automotive electronics for engine control units, infotainment systems, and ADAS applications that require vibration-resistant components. Industrial applications include power supplies, motor drives, and automation equipment where stable capacitance under varying temperatures is crucial. The component also serves in medical devices, telecommunications infrastructure, and military/aerospace systems that demand high-reliability passive components.

Maintenance and Precautions

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While MLCCs are generally maintenance-free, proper handling during assembly is critical. Avoid excessive mechanical stress during placement as ceramic materials are brittle. Follow recommended soldering profiles (typically 260°C peak temperature for ≤10 seconds) to prevent thermal shock or delamination. In circuit design, derate the working voltage to about 70% of the rated value for improved reliability. Be aware of potential piezoelectric effects where mechanical vibration might generate unwanted electrical noise in sensitive analog circuits. Store components in controlled environments (15-35°C, <70% RH) prior to use.

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B2B Procurement Guide

When sourcing CL05B473KA5NNNC capacitors, verify manufacturer certifications (ISO 9001, IATF 16949 for automotive) and request material declarations (RoHS, REACH). Consider ordering from authorized distributors to avoid counterfeit components that may fail reliability testing. For volume procurement (typically >10,000 units), negotiate pricing based on annual projected usage. Evaluate alternative part numbers from reputable manufacturers like Murata (GRM155R71H473KA01), TDK (C1005X7R1H473K), or Samsung (CL05B473KA5NNNC) for supply chain diversification. Lead times can vary from 8-16 weeks for large orders, so plan inventory accordingly.