RDS0G391MCNAFEGS

The RDS0G391MCNAFEGS is a conductive polymer aluminum solid electrolytic capacitor in Nichicon’s RDS series, offered as a compact surface-mount radial-can SMD package. It provides high capacitance and high ripple-current capability in a small footprint, targeted at designs that require reliable filtering and energy storage at elevated temperatures.

Key attributes include a 390 µF capacitance at 4 V, low ESR measured at 100 kHz, and an extended load life specified at 3000 hours at 125 °C, making it suitable for high-temperature, high-stress electronic environments.

Key Features

• Core Technology: Conductive polymer aluminum solid electrolytic construction for stable capacitance and conductivity characteristics.
• Capacitance & Voltage: 390 µF rated capacitance with a 4 V rated voltage and ±20% tolerance at 120 Hz, 20 °C.
• Thermal Endurance: Rated operating temperature range −55 °C to 125 °C with a load life of 3000 hours at 125 °C.
• Low ESR: ESR of 25 mΩ measured at 100 kHz, 20 °C—supporting efficient high-frequency performance.
• High Ripple Capability: Specified ripple current of 105 mA at 120 Hz and 1.05 A at 300 kHz, with frequency coefficients documented in the datasheet.
• Surface-Mount Package: Radial can SMD, size L: 5.7 × D: 6.3 mm, with a recommended land size of 6.5 × 6.5 mm for PCB mounting.
• Assembly Compatibility: Lead-free reflow soldering compatible with a 260 °C peak reflow condition.
• Regulatory Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).
• Polarized Component: Polarized electrolytic capacitor—observe polarity during placement and circuit design.

Typical Applications

• Power supply filtering and smoothing: High capacitance and low ESR support decoupling and smoothing in power rails operating at elevated temperatures.
• High-frequency power stages: Specified ESR at 100 kHz and ripple-current ratings up to 1.05 A at 300 kHz suit use where high-frequency ripple handling is required.
• Compact SMD designs: Small radial-can SMD footprint (5.7 × 6.3 mm) and lead-free reflow compatibility simplify integration into space-constrained PCBs.

Unique Advantages

• Extended high-temperature life: 3000 hours at 125 °C provides documented endurance for designs exposed to sustained elevated temperatures.
• High ripple handling: Clear ripple-current specifications at both low and high frequencies enable confident sizing for thermal and reliability margins.
• Low ESR for efficient performance: 25 mΩ at 100 kHz reduces losses and supports stable operation in high-frequency circuits.
• Compact SMD form factor: Dense capacitance in a 6.3×5.7 mm package helps minimize board area while preserving performance.
• Lead-free assembly ready and RoHS compliant: Matches lead-free reflow processes (260 °C peak) and environmental compliance requirements.

Why Choose RDS0G391MCNAFEGS?

RDS0G391MCNAFEGS delivers a combination of high capacitance, documented high-temperature endurance, and low ESR in a compact surface-mount radial-can package. Its specifications are tailored for designs that require reliable energy storage and ripple handling under elevated temperature conditions.

This part is suited for engineers and procurement teams building compact power subsystems and high-frequency power stages where board space, thermal endurance, and measurable ripple performance are priorities. The RDS series’ documented endurance and frequency-rated ripple data simplify component selection and reliability planning.

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