RKS1H390MCNAHGGS

The RKS1H390MCNAHGGS is a surface-mount conductive-polymer aluminum electrolytic capacitor offering 39 µF capacitance at a 50 V rating. Engineered for compact power designs, it combines low ESR and high allowable ripple current with a wide operating temperature range for demanding industrial and embedded applications.

Designed for automated assembly and lead‑free reflow processes, this part provides a balance of electrical performance and long-term reliability with a rated load life of 3000 hours at 125°C.

Key Features

• Electrical Performance: 39 µF nominal capacitance with tolerance -20% to +20% and a tanδ (DF) of 0.12 measured at 20°C, 120 Hz.
• Voltage Rating: Rated for 50 V operation to support intermediate DC bus and power-rail filtering.
• Low ESR and High Ripple Handling: ESR specified at 30 mΩ (20°C, 100 kHz) with low-frequency ripple current of 160 mA (120 Hz) and high-frequency ripple current of 1.6 A (300 kHz).
• Reliability & Endurance: Load life of 3000 hours at 125°C; endurance limits (capacitance, tanδ, ESR, leakage) are specified and tested per the series datasheet.
• Wide Temperature Range: Rated for operation from -55°C to +125°C to suit industrial and harsh-environment electronics.
• Surface-Mount Packaging: Radial can SMD package (φ8 × 7.7 mm) designed for pick-and-place assembly; supplied in embossed carrier tape with moisture-proof packing.
• Reflow Compatibility: Series-level reflow capability for lead-free processes with peak temperatures up to 260°C (per datasheet soldering profile).
• Leakage Current: Specified leakage current up to 100 µA (after standard conditioning).

Typical Applications

• Power-supply decoupling and bulk filtering: Low ESR and high ripple capability make it suitable for DC‑DC converter output filtering and bulk decoupling on power rails.
• Embedded and industrial electronics: Wide -55°C to +125°C temperature range and long life at elevated temperature support control systems and instrumentation in industrial environments.
• High-frequency switching supplies: 30 mΩ ESR at 100 kHz and 1.6 A high-frequency ripple current help stabilize switching regulators and reduce output voltage ripple.

Unique Advantages

• Compact, high-capacitance SMD form factor: 39 µF in a φ8 × 7.7 mm package reduces board area compared with larger through-hole options while remaining compatible with automated assembly.
• High-temperature endurance: 3000 hours at 125°C provides predictable long-term performance in elevated-temperature assemblies.
• Low ESR for improved transient response: 30 mΩ ESR at 100 kHz helps minimize voltage drop and improve regulator stability under load transients.
• Robust ripple handling: 1.6 A high-frequency ripple rating supports demanding switching applications and reduces the need for parallel components.
• Reflow-ready packaging: Embossed carrier taping with moisture-proof packing and lead‑free reflow compatibility streamline SMT assembly and handling.

Why Choose RKS1H390MCNAHGGS?

The RKS1H390MCNAHGGS positions itself as a reliable surface-mount solution where compact size, low ESR, and high ripple capability are required. Its combination of 50 V rating, wide operating temperature range, and 3000-hour life at 125°C makes it well suited to industrial power systems, embedded controllers, and switching-regulator outputs that demand stable capacitance and predictable aging.

Selecting this part delivers measurable board- and system-level benefits—reduced output ripple, improved transient performance, and simplified assembly through reflow compatibility and tape-and-reel packaging—backed by Nichicon series-level specifications and endurance testing.

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