RKS1H390MCNAHFGS

The RKS1H390MCNAHFGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor from Nichicon's RKS series, specified at 39 µF and 50 V. It combines low ESR and controlled loss tangent with high allowable ripple current and extended high-temperature endurance.

Designed for board-level power and decoupling duties, this part targets systems that require stable capacitance, low dissipation, and long life under elevated temperatures up to 125°C.

Key Features

• Capacitance & Tolerance — 39 µF nominal capacitance with tolerance of -20% to +20% (±20% at 120 Hz, 20°C).
• Rated Voltage — 50 V DC rating for mid-voltage power rails.
• Low ESR & High‑Frequency Performance — ESR of 30 mΩ measured at 100 kHz and tanδ of 0.12 (20°C, 120 Hz) for reduced loss and improved stability at high switching frequencies.
• High Ripple Current Capability — Low-frequency ripple current 160 mA at 120 Hz and high-frequency ripple current 1.6 A at 300 kHz to support high-current switching and filtering.
• Wide Temperature Range & Endurance — Operating range from -55°C to +125°C and a rated load life of 3000 hours at 125°C for durable performance in thermally demanding environments.
• Leakage Current — Specified leakage current of 100 µA (measured after rated voltage application conditions).
• Compact SMD Package — φ8 × 6.7 mm can (radial, can - SMD) with recommended land size 8.3 × 8.3 mm; supplied in embossed carrier taping with moisture proof packing for automated assembly.
• Reflow Compatibility — SMD type designed for lead-free reflow soldering with peak profile compatibility up to 260°C (pre-heat and peak time conditions per manufacturer guidance).

Typical Applications

• Power conversion / DC‑DC converters — Bulk smoothing and output decoupling where high ripple current and low ESR are required for stable regulation.
• Industrial control electronics — Filtering and energy storage in systems operating across wide temperatures and requiring long-term thermal endurance.
• Telecommunications and networking equipment — High-frequency decoupling and noise suppression on mid-voltage rails enabled by low ESR at 100 kHz and strong HF ripple capability.
• Embedded and board‑level power subsystems — Compact SMD form factor and reflow compatibility simplify automated assembly for dense PCB layouts.

Unique Advantages

• High ripple tolerance: Rated for 1.6 A at 300 kHz and 160 mA at 120 Hz, enabling reliable filtering in switching environments.
• Low electrical loss: 30 mΩ ESR at 100 kHz and tanδ 0.12 deliver low dissipation and help minimize heat rise under load.
• Extended high-temperature life: 3000 hours at 125°C endurance supports designs that must tolerate prolonged elevated operating temperatures.
• Surface-mount, production-ready packaging: Embossed carrier taping with moisture-proof packing and lead‑free reflow compatibility streamline automated assembly and handling.
• Compact board footprint: φ8 × 6.7 mm can with an 8.3 × 8.3 mm recommended land pattern balances capacitance with small PCB area usage.

Why Choose RKS1H390MCNAHFGS?

The RKS1H390MCNAHFGS positions itself where high ripple tolerance, low ESR, and elevated-temperature endurance are required. Its conductive polymer aluminum construction and RKS series specifications deliver verifiable electrical performance for demanding power-management and filtering tasks.

This capacitor is well suited for engineers specifying mid-voltage SMD solutions for industrial, telecom, and embedded power subsystems that demand stable behavior at high frequency and long-term reliability at temperatures up to 125°C.

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