RKS1D390MCNAFGGS

The RKS1D390MCNAFGGS is a surface-mount conductive-polymer aluminum solid electrolytic capacitor offering 39 µF capacitance at a 20 V rating. It combines low ESR and high allowable ripple current with extended high-temperature endurance for use where compact, high-frequency power decoupling and smoothing are required.

Designed in a compact radial SMD can (φ6.3 × 7.7 mm), the part supports lead‑free reflow processes and is supplied in embossed carrier tape with moisture‑proof packing for volume assembly.

Key Features

• Conductive‑polymer aluminum solid construction: Solid electrolyte architecture for stable electrical characteristics and improved high‑frequency performance.
• Rated capacitance and voltage: 39 µF at 20 V with capacitance tolerance of −20% to +20%.
• Low loss (tan δ): tanδ = 0.12 measured at 20°C, 120 Hz, supporting efficient AC performance in filtering and decoupling applications.
• Low ESR: ESR = 30 mΩ measured at 20°C, 100 kHz, enabling effective high‑frequency decoupling and reduced thermal dissipation.
• High ripple capability: 140 mA at 120 Hz (low frequency) and 1.4 A at 300 kHz (high frequency), suitable for demanding ripple and switching environments.
• Wide operating temperature & endurance: Rated for −55°C to +125°C with a load life of 3000 hours at 125°C.
• Leakage current: Specified leakage up to 100 µA.
• Surface-mount package & assembly: Radial can SMD (φ6.3 × 7.7 mm), compatible with lead‑free reflow up to 260°C peak per manufacturer soldering profile; supplied in embossed carrier tape with moisture‑proof packing.
• Environmental compliance: RoHS compliant.

Typical Applications

• Power rail decoupling: Low ESR and high high‑frequency ripple capability make this capacitor suitable for decoupling near switching regulators and power ICs.
• Output filtering for DC–DC converters: High ripple current rating and low loss help stabilize converter outputs under transient load conditions.
• High‑temperature electronics: Extended operating range (−55°C to 125°C) and 3000 h endurance at 125°C support applications exposed to elevated ambient temperatures.

Unique Advantages

• High ripple tolerance: 1.4 A at high frequency and 140 mA at 120 Hz reduce the need for oversized components in switching-power designs.
• Low ESR at 100 kHz: 30 mΩ ESR minimizes voltage drop and heat generation on high‑speed power rails.
• Solid polymer reliability: Conductive‑polymer electrolyte yields stable performance across frequency and temperature variations.
• Extended high‑temperature life: 3000 hours at 125°C supports long-term operation in thermally stressed assemblies.
• Assembly‑ready packaging: Embossed carrier tape and moisture‑proof packing streamline automated placement and storage.

Why Choose RKS1D390MCNAFGGS?

RKS1D390MCNAFGGS delivers a combination of low ESR, solid‑electrolyte stability, and high ripple capability in a compact SMD can, engineered for demanding high‑frequency power applications and elevated temperature operation. Its 3000‑hour endurance at 125°C and compatibility with lead‑free reflow processes make it well suited for designs that require reliable, long‑life decoupling and output filtering in compact assemblies.

This part is appropriate for engineers specifying capacitors for high‑frequency switching environments where quantified ESR, ripple ratings, and thermal endurance are primary selection criteria.

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