RSB0E391MCN1GS

The RSB0E391MCN1GS is a conductive polymer aluminum solid electrolytic capacitor in an SMD radial-can package from Nichicon’s RSB series. It delivers high capacitance in a compact footprint with low equivalent series resistance (ESR) and high ripple-current capability.

Designed for general-purpose board-level power applications, this part provides long-term stability with a rated lifetime of 2000 hours at 105°C and RoHS compliance for lead‑free assembly environments.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance at a rated voltage of 2.5 V with a tolerance of −20%/+20% (measured at 120 Hz, 20°C).
• Conductive Polymer Dielectric — Solid conductive polymer construction for enhanced ripple handling and reduced ESR compared with conventional electrolytic designs.
• Low ESR — 10 mΩ equivalent series resistance measured at 100 kHz, lowering impedance in high-frequency power paths.
• High Ripple Current — Rated for 365 mA at 120 Hz and 3.65 A at 300 kHz, enabling effective smoothing and decoupling in high‑frequency circuits.
• Reliability & Endurance — Load life specified at 2000 hours at 105°C; designed to meet endurance criteria for capacitance change, tan δ and ESR limits after testing.
• Thermal & Environmental — Operating temperature range −55°C to +105°C and RoHS compliant (2011/65/EU, (EU)2015/863).
• Surface‑mount Package — Compact 6.3×5.7 mm case (φD×L) in an SMD radial can form factor with recommended land pattern 6.5×6.5 mm; compatible with lead‑free reflow soldering conditions at a 260°C peak.
• Polarized — Polar capacitor intended for use where correct polarity is maintained in the circuit.

Typical Applications

• Power supply filtering and decoupling — Low ESR and high ripple-current capability make this capacitor suitable for reducing voltage ripple on compact power rails.
• DC‑DC converter output smoothing — High capacitance in a small footprint supports stable output filtering where space is constrained.
• Embedded and consumer electronics — General-purpose board-level energy storage and transient suppression in compact, surface-mounted designs.

Unique Advantages

• High capacitance in a compact SMD can — 390 µF in a 6.3×5.7 mm case conserves board area while providing significant energy storage.
• Low impedance at high frequency — 10 mΩ ESR at 100 kHz and a 3.65 A ripple rating at 300 kHz reduce losses and improve power-delivery stability.
• Long, specified endurance at elevated temperature — 2000 hours at 105°C supports reliability in thermally demanding applications.
• Lead‑free assembly compatible — Rated for lead‑free reflow soldering at 260°C peak, easing integration into modern manufacturing flows.
• RoHS compliant — Meets current RoHS directives, supporting regulatory and environmental requirements.

Why Choose RSB0E391MCN1GS?

RSB0E391MCN1GS combines conductive‑polymer performance with a small SMD radial-can package to deliver low ESR, high ripple capability, and substantial capacitance for compact power designs. Its 2.5 V rating, 390 µF capacitance, and 2000‑hour endurance at 105°C make it well suited to engineers designing board-level power filtering, decoupling, and energy‑storage functions where reliability and thermal tolerance are required.

Manufactured by Nichicon as part of the RSB series, this part is intended for general‑purpose applications that benefit from reduced impedance, high-frequency ripple handling, and lead‑free assembly compatibility.

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