RKS1C391MCNAHHGS

The RKS1C391MCNAHHGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor designed for general-purpose smoothing and decoupling on 16 V power rails. It pairs high capacitance (390 µF) with low equivalent series resistance to support ripple current handling in compact SMD assemblies.

Engineered for elevated operating conditions, this Nichicon RKS-series part offers a wide temperature range (−55 °C to 125 °C) and a rated load life of 3000 hours at 125 °C, making it suitable for designs that require long-term stability in demanding thermal environments.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance at a rated voltage of 16 V, with a tolerance of −20% to +20%.
• Conductive Polymer Construction — Solid polymer electrolyte architecture for stable performance and reliability in SMD form.
• Low ESR & High Ripple Capability — ESR of 30 mΩ measured at 20 °C/100 kHz, with ripple current ratings of 160 mA at 120 Hz and 1.6 A at 300 kHz to support high-frequency filtering and bulk decoupling.
• Loss Characteristics — Tangent of loss angle (tan δ) of 0.12 measured at 20 °C, 120 Hz for predictable AC behavior.
• Long Endurance at Elevated Temperature — Rated life/endurance of 3000 hours at 125 °C under rated voltage.
• Size & Package — Compact radial can SMD: φ8 × 8.7 mm (diameter × length). Supplied in embossed carrier taping with moisture-proof packing for automated assembly.
• Operating Range & Compliance — Operating temperature from −55 °C to 125 °C; RoHS compliant.
• Leakage Current — Specified leakage current of 312 µA after application of rated voltage per product data.

Typical Applications

• Power Supply Filtering — Bulk smoothing and output filtering on 16 V rails where high capacitance and low ESR reduce voltage ripple.
• High-Frequency Decoupling — Local decoupling for DC–DC converter outputs and power modules that require good HF ripple handling (1.6 A at 300 kHz).
• Industrial & Consumer Electronics — General-purpose use in compact SMD assemblies operating across −55 °C to 125 °C where long life at elevated temperature is required.

Unique Advantages

• High Capacitance in a Compact SMD Can — 390 µF in a φ8 × 8.7 mm package reduces board space compared with larger axial or radial components.
• Low ESR for Efficient Filtering — 30 mΩ ESR at 100 kHz enables effective ripple attenuation and reduces heat generation under AC loading.
• Robust High-Frequency Performance — Rated ripple current of 1.6 A at 300 kHz supports demanding switching regulator and converter applications.
• Extended Thermal Endurance — 3000 hours rated life at 125 °C provides predictable long-term behavior in high-temperature environments.
• Assembly-Ready Packaging — Embossed carrier tape and moisture-proof packing simplify automated pick-and-place and reflow processes.
• Regulatory Compliance — RoHS compliant construction for environmental and regulatory alignment.

Why Choose RKS1C391MCNAHHGS?

RKS1C391MCNAHHGS is positioned for designers who need a high-capacitance, low-ESR SMD capacitor for 16 V power rails with demonstrated endurance at elevated temperatures. The combination of 390 µF capacitance, 30 mΩ ESR, and 1.6 A high-frequency ripple capability offers a compact solution for smoothing and decoupling in both industrial and consumer electronic assemblies.

Manufactured by Nichicon and available in mass production, this part delivers measured electrical characteristics and packaging optimized for automated assembly, providing reliable, long-term performance in applications that operate across a wide temperature range.

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