RKS1E390MCNAHFGS

The RKS1E390MCNAHFGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor rated 39 µF at 25 V. It combines low equivalent series resistance with high allowable ripple current and long-life endurance for demanding thermal and power-management environments.

Designed for SMD assembly, this part supports lead‑free reflow (260°C peak) and is supplied in embossed carrier taping with moisture-proof packing. Key value propositions include low ESR (30 mΩ at 100 kHz), high-frequency ripple handling (1.6 A at 300 kHz), and a rated operating range of −55°C to 125°C with 3000 hours life at 125°C.

Key Features

• Capacitance & Voltage 39 µF nominal capacitance at a rated voltage of 25 V with ±20% tolerance.
• Low ESR & High-Frequency Performance ESR of 30 mΩ at 20°C/100 kHz and high-frequency ripple current of 1.6 A at 300 kHz support efficient high-speed power stages.
• Ripple Current Low-frequency ripple current 160 mA at 120 Hz and high-frequency ripple current 1.6 A at 300 kHz for robust ripple handling across frequency ranges.
• Thermal Range & Long Life Rated for −55°C to 125°C with 3000-hour endurance at 125°C, providing sustained performance in elevated-temperature applications.
• Low Loss Characteristics tan δ (DF) of 0.12 measured at 20°C, 120 Hz, for predictable dissipation behavior.
• Leakage Current Leakage current specified at 100 µA (after standard conditioning), supporting stable bias performance.
• Compact SMD Package Radial can SMD package, size φ8 × 6.7 mm (L × D), surface‑mount land 8.3 × 8.3 mm, optimized for PCB space efficiency.
• Manufacturing & Compliance Lead‑free reflow compatible to 260°C peak and supplied in embossed carrier taping/moisture‑proof packing; RoHS compliant.

Typical Applications

• Power supply filtering and decoupling — Provides low ESR bulk capacitance and high ripple handling for smoothing and decoupling in power rails.
• High-frequency DC‑DC converters — Low ESR at 100 kHz and 1.6 A high-frequency ripple capability suit switching regulator output stages.
• Elevated-temperature power modules — Rated to 125°C with 3000-hour life for power electronics that operate in high-temperature environments.

Unique Advantages

• High ripple tolerance: Supports 1.6 A at 300 kHz and 160 mA at 120 Hz, reducing the need for parallel components to handle ripple.
• Low ESR for reduced losses: 30 mΩ ESR at 100 kHz minimizes I²R losses and improves converter efficiency.
• Extended high-temperature endurance: 3000 hours at 125°C provides predictable lifetime performance in thermally demanding designs.
• Compact SMD can footprint: φ8 × 6.7 mm package with 8.3 × 8.3 mm land saves board area while delivering high capacitance.
• Assembly-ready packaging: Embossed carrier taping and moisture‑proof packing simplify automated placement and storage.
• Lead‑free reflow compatible and RoHS compliant: Fits modern assembly processes and regulatory requirements.

Why Choose RKS1E390MCNAHFGS?

RKS1E390MCNAHFGS is positioned for designs that require a compact, surface-mount capacitor with low ESR, strong ripple-current capability, and verified endurance at elevated temperatures. Its combination of 39 µF capacitance, 25 V rating, and 3000‑hour life at 125°C makes it suitable for power-regulation stages where thermal stability and long-term reliability are essential.

This part is well suited to engineers specifying components for high-frequency converters, thermal‑stress environments, or any board-level power solution where reduced losses and robust ripple handling improve performance and longevity. Supplied in assembly‑friendly packaging and compatible with lead‑free reflow, it integrates into standard manufacturing flows.

If you’d like pricing, availability, or sample information for RKS1E390MCNAHFGS, request a quote or contact sales to discuss your requirements and lead times.