RDS0E391MCNAFEGS

The RDS0E391MCNAFEGS is a conductive polymer aluminum solid electrolytic capacitor in a compact surface-mount radial can package. It delivers 390 µF at 2.5 V with a ±20% tolerance and is designed for applications that require high capacitance and sustained performance at elevated temperatures.

Built for SMD assembly, the part supports lead‑free reflow up to a 260 °C peak and is RoHS compliant. Its combination of low ESR and defined ripple current capability makes it suitable for compact power and high‑frequency modules operating in demanding thermal conditions.

Key Features

• Dielectric / Construction Conductive polymer aluminum solid electrolytic capacitor from Nichicon’s RDS series, providing high capacitance in an SMD can.
• Capacitance & Rated Voltage 390 µF rated capacitance at 2.5 V with ±20% tolerance (measured at 120 Hz, 20 °C).
• Temperature Range & Lifetime Operating temperature −55 °C to +125 °C with a specified load life of 3000 hours at 125 °C.
• Low ESR & Ripple Handling ESR 25 mΩ (measured at 100 kHz, 20 °C) and rated ripple currents specified as 125 mA at 120 Hz and 1.25 A at 300 kHz, enabling effective filtering in high‑ripple environments.
• High‑frequency Performance Frequency coefficients for ripple current provide predictable behavior up to 300 kHz (e.g., coefficient 1.00 at 100–300 kHz).
• Package & SMT Compatibility Surface-mount radial can (φ6.3×5.7 mm), recommended land size 6.5×6.5 mm, designed for lead‑free reflow soldering (260 °C peak).
• Leakage Current Specification Leakage current limited per datasheet conditions (after 2 minutes: not more than 0.3CV or 700 µA, whichever is greater), supporting predictable bias behavior.
• Environmental Compliance Compliant with RoHS (2011/65/EU, (EU)2015/863).

Typical Applications

• Power delivery modules — Bulk and decoupling capacitance for DC‑DC converters where compact footprint, low ESR, and high ripple handling are required.
• High‑frequency switching circuits — Support for switching frequencies up to and above 100 kHz with defined ripple coefficients and low ESR.
• Industrial and embedded electronics — Surface‑mount solution for densely packaged modules that must withstand elevated ambient temperatures (up to 125 °C) for extended periods.
• Module‑level decoupling — Small can size and SMD mounting make it suitable for close‑coupled decoupling on compact PCBs.

Unique Advantages

• Extended high‑temperature endurance: 3000 hours at 125 °C provides a clear specification for long-term performance in heated environments.
• Compact, board‑friendly package: φ6.3×5.7 mm SMD can with a 6.5×6.5 mm land recommendation enables high capacitance in a small footprint.
• Low ESR for effective ripple suppression: 25 mΩ at 100 kHz helps reduce losses and temperature rise under ripple load.
• Predictable high‑frequency behavior: Frequency coefficients up to 300 kHz allow designers to estimate ripple current capability across switching regimes.
• Assembly ready for lead‑free processes: Compatible with 260 °C peak reflow for lead‑free manufacturing flows.
• Regulatory compliance: RoHS conformity simplifies environmental and regulatory considerations.

Why Choose RDS0E391MCNAFEGS?

RDS0E391MCNAFEGS combines high capacitance, low ESR, and extended 125 °C endurance in a surface‑mount radial can that fits compact power and high‑frequency module designs. The part is specified for long load life and predictable ripple performance, making it appropriate for engineers designing systems where sustained thermal and electrical stresses are expected.

This Nichicon RDS series part is targeted at designs that require a balance of capacitance density, thermal robustness, and SMT assembly compatibility. Its documented specifications support reliable selection and lifecycle planning for embedded, industrial, and power delivery applications.

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