RKS1C390MCNAFEGS

The RKS1C390MCNAFEGS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor specified at 39 µF and 16 V. It combines low equivalent series resistance and high allowable ripple current with a compact radial can SMD package for general-purpose electronic applications.

Designed for use across a wide operating temperature range (−55 °C to 125 °C) and offering a rated life of 3000 hours at 125 °C, this part targets designs that require stable capacitance, controlled loss tangent, and reliable high-temperature endurance in a small footprint.

Key Features

• Capacitance & Voltage — 39 µF nominal capacitance with a rated voltage of 16 V and tolerance of −20% to +20%.
• Conductive Polymer Construction — Solid electrolyte construction for stable electrical characteristics and improved ripple handling compared to traditional wet electrolytics.
• Low Loss / DF — tanδ (DF) of 0.12 measured at 20 °C, 120 Hz for predictable dissipation behavior in AC conditions.
• Low ESR — Equivalent series resistance of 50 mΩ measured at 20 °C, 100 kHz, supporting efficient high-frequency performance.
• Ripple Current Capability — Low-frequency ripple current of 100 mA (120 Hz) and high-frequency ripple current of 1 A (300 kHz) for power smoothing and decoupling tasks.
• Leakage Current — Specified leakage current up to 100 µA after rated-voltage application.
• High-Temperature Endurance — Rated life/endurance of 3000 hours at 125 °C under rated voltage.
• Robust SMD Package — Radial can SMD package with dimensions φ6.3 × 5.8 mm and supplied in embossed carrier taping with moisture-proof packing for automated assembly.
• RoHS Compliant — Conforms to applicable RoHS requirements.
• Lead-Free Reflow Compatible — Designed to withstand lead-free reflow soldering conditions up to a 260 °C peak as specified for the series.

Typical Applications

• General-purpose electronics — Suited to designs that specify a 39 µF, 16 V surface-mount capacitor for general-purpose use.
• Power supply decoupling — Low ESR and defined ripple current ratings make it suitable where stable decoupling or smoothing is required at the specified voltage and capacitance.
• High-temperature environments — Specified operation from −55 °C to 125 °C with a 3000-hour endurance rating at 125 °C for extended durability in elevated-temperature assemblies.

Unique Advantages

• Compact SMD radial-can footprint — φ6.3 × 5.8 mm size supports space-constrained PCB layouts while retaining adequate capacitance.
• Measurable high-frequency performance — 50 mΩ ESR at 100 kHz and 1 A ripple current at 300 kHz deliver verifiable behavior for high-frequency filtering tasks.
• High-temperature rated life — 3000 hours at 125 °C provides a defined endurance metric for thermal-stress designs.
• Predictable leakage and loss characteristics — Specified leakage current (100 µA) and tanδ (0.12) allow precise margining in power and analog circuitry.
• Assembly-ready packaging — Embossed carrier taping with moisture-proof packing supports automated SMD placement and storage.
• Lead-free reflow support — Compatibility with 260 °C peak reflow profiles aligns with lead-free assembly processes.

Why Choose RKS1C390MCNAFEGS?

RKS1C390MCNAFEGS is positioned for engineers and procurement teams seeking a compact, surface-mount conductive polymer aluminum capacitor with documented high-temperature endurance and clear electrical parameters. Its combination of 39 µF capacitance at 16 V, low ESR at high frequency, and 3000-hour life at 125 °C makes it suitable for designs that require stable, repeatable performance under thermal and ripple stress.

This part is a practical choice for general-purpose electronics and power-supply applications where space, thermal endurance, and measurable AC behavior matter. Nichicon’s series-level specifications—such as RoHS compliance, reflow compatibility, and embossed carrier taping—support reliable assembly and long-term deployment.

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