RKS1V390MCNAFEGS

The RKS1V390MCNAFEGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor from Nichicon’s RKS series. It provides 39 µF capacitance at a 35 V rating with a compact φ6.3 × 5.8 mm SMD can package and is supplied in embossed carrier taping with moisture-proof packing for automated assembly.

Designed for applications that demand low equivalent series resistance and high allowable ripple current, this part offers a 60 mΩ ESR (measured at 20°C/100 kHz), a high-frequency ripple current rating of 900 mA (at 300 kHz) and a 3000-hour load life at 125°C, delivering stable performance in thermally demanding environments.

Key Features

• Capacitance & Tolerance — 39 µF nominal capacitance with tolerance of −20% to +20% (measured at 20°C, 120 Hz).
• Rated Voltage & Polarization — 35 V rated voltage; polarized electrolytic construction for DC applications.
• Low Loss & ESR — tanδ (DF) of 0.12 at 20°C/120 Hz and ESR of 60 mΩ at 100 kHz, supporting efficient high-frequency performance.
• High Ripple Current Capability — Low-frequency ripple current 90 mA (at 120 Hz) and high-frequency ripple current 900 mA (at 300 kHz) for demanding power conditions.
• Leakage Current — Leakage current specified at 100 µA (after standard conditioning), suitable for stable bias performance.
• High Temperature Endurance — Rated for −55°C to +125°C operating range with a life specification of 3000 hours at 125°C.
• Reflow & Assembly Ready — SMD part compatible with lead-free reflow conditions (peak 260°C) and supplied in embossed carrier taping with moisture-proof packing for pick-and-place assembly.
• Compact SMD Can — Package dimensions L: 5.8 mm × D: 6.3 mm with recommended land size L: 6.6 × W: 6.6 mm for PCB layout.
• Regulatory — RoHS compliant.

Typical Applications

• Power conversion and DC–DC outputs — Low ESR and high allowable ripple current support filtering and smoothing at converter outputs where thermal endurance is required.
• High-frequency power systems — High-frequency ripple current rating and low tanδ make the part suitable for circuits with significant high-frequency content.
• Compact SMD power modules — Small φ6.3 × 5.8 mm can and embossed carrier packaging enable use in space-constrained surface-mount designs.
• Thermally demanding electronics — Specified 3000-hour endurance at 125°C for applications that require prolonged operation at elevated temperatures.

Unique Advantages

• High ripple tolerance: Rated for 900 mA at 300 kHz (and 90 mA at 120 Hz), enabling reliable handling of AC stress on power rails.
• Low ESR for efficient performance: 60 mΩ ESR at 100 kHz and a low tanδ help minimize losses and heat generation in high-frequency circuits.
• Extended high-temperature life: 3000 hours at 125°C provides predictable durability for long-term deployments in hot environments.
• SMD assembly friendly: Lead-free reflow compatibility to 260°C and embossed carrier taping with moisture-proof packing reduce integration risk on automated lines.
• Compact footprint: Small can size (φ6.3 × 5.8 mm) and defined land pattern simplify placement in space-limited layouts.
• Standards compliance: RoHS-compliant construction supports regulatory requirements for many product lines.

Why Choose RKS1V390MCNAFEGS?

The RKS1V390MCNAFEGS balances compact SMD packaging with electrical characteristics targeted at power-dense designs: low ESR, strong ripple-current capability, and verified endurance at elevated temperatures (3000 h at 125°C). These attributes make it suitable for designers specifying stable capacitance and reliable performance under thermal and ripple stress.

Manufactured by Nichicon and shipped in embossed carrier taping with moisture-proof packing, this part is ready for volume assembly and offers a combination of performance and manufacturability for systems engineers and buyers focused on robust power subsystem components.

If you would like pricing, lead-time details, or to request a quote for RKS1V390MCNAFEGS, submit an inquiry and our team will respond with the requested information.