RKS1C391MCNAHJGS

The RKS1C391MCNAHJGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor delivering 390 µF at 16 V in a compact φ8 × 10 mm SMD can. Designed for general-purpose power applications, it pairs high capacitance with low ESR and high allowable ripple current for robust decoupling and bulk energy storage in compact assemblies.

Key value propositions include low equivalent series resistance (25 mΩ at 20°C/100 kHz), high ripple-handling capability (1.7 A at high frequency), and extended endurance (3000 hours at 125°C), making it suitable where thermal stability and sustained performance are required.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 16 V with capacitance tolerance of -20% to +20%.
• Low ESR — 25 mΩ ESR measured at 20°C/100 kHz, supporting efficient high-frequency performance and reduced power loss.
• High Ripple Current — Low-frequency ripple current 170 mA (120 Hz) and high-frequency ripple current 1.7 A (300 kHz) for demanding power-conditioning tasks.
• Dielectric Loss (tan δ) — tanδ of 0.12 measured at 20°C, 120 Hz for predictable AC behavior.
• Leakage Current — Specified leakage current of 312 µA after standard conditioning.
• High-temperature Endurance — Rated for operation from -55°C to 125°C with a load life of 3000 hours at 125°C.
• SMD Package & Assembly — φ8 × 10 mm radial can SMD; supplied in embossed carrier taping with moisture-proof packing. Lead-free reflow compatible with a 260°C peak profile (reflow up to two times at ≤260°C per datasheet guidance).
• Compliance — RoHS compliant.

Typical Applications

• General-purpose power filtering — Compact bulk capacitance and low ESR support smoothing and decoupling in board-level power rails at 16 V.
• Surface-mount power modules — SMD can package and high allowable ripple current suit tight-footprint power converters and DC–DC modules.
• High-temperature environments — Specified operation from -55°C to 125°C and 3000-hour life at 125°C provide longevity for thermally demanding designs.
• High-frequency decoupling — ESR specified at 100 kHz and tanδ measured at 120 Hz make the device appropriate where frequency-stable bulk and decoupling characteristics are required.

Unique Advantages

• Consistent high-capacitance in a small SMD can — 390 µF in a φ8 × 10 mm footprint reduces board area while maintaining bulk energy storage.
• Reduced power loss and thermal rise — Low ESR (25 mΩ at 100 kHz) minimizes I²R losses in high-current applications.
• Robust ripple handling — 1.7 A high-frequency ripple rating supports modern, high-switching-frequency power stages.
• Extended high-temperature life — 3000 hours at 125°C provides predictable end-of-life behavior for sustained thermal stress.
• Assembly-ready packaging — Embossed carrier taping and moisture-proof packing simplify automated placement and storage logistics.
• Regulatory compliance — RoHS compliance supports global lead-free and environmental requirements.

Why Choose RKS1C391MCNAHJGS?

RKS1C391MCNAHJGS targets designers seeking a compact, high-capacitance SMD solution with low ESR and strong ripple performance for board-level power conditioning. Its combination of 390 µF capacitance, 16 V rating, measured ESR at 100 kHz, and a 3000-hour life at 125°C delivers a balance of density, efficiency, and durability for general-purpose power electronics.

This part is well suited to engineers specifying reliable bulk and decoupling capacitors in space-constrained assemblies, module-level power subsystems, and applications that require sustained performance across a wide temperature range. RoHS compliance and tape-and-reel packaging further simplify integration into production lines.

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