RHS1D391MCN1GS

The RHS1D391MCN1GS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor offering 390 µF capacitance at a 20 V rating. Engineered for general-purpose electronic applications, it combines high capacitance, low ESR and elevated ripple-handling capability in a compact φ8×11.7 mm SMD can.

Its core value is reliable decoupling and energy buffering where compact size, low loss and sustained performance at elevated temperature are required. The part is supplied in embossed carrier taping with moisture-proof packing for automated assembly.

Key Features

• Capacitance & tolerance — 390 µF nominal capacitance with tolerance of -20% to +20% (measured at 120 Hz, 20°C).
• Rated voltage — 20 V DC rating for a wide range of low-voltage power rails.
• Low ESR — 14 mΩ equivalent series resistance measured at 20°C/100 kHz, supporting low-loss operation at high frequencies.
• High ripple current capability — Rated ripple current 495 mA at 120 Hz and 4.95 A at 300 kHz, enabling effective smoothing and filtering across low and high frequency ranges.
• Loss tangent (tan δ) — 0.12 specified at 20°C, 120 Hz, indicating low dielectric losses under standard test conditions.
• Leakage current — 1560 µA (measured after 2 minutes at 20°C under rated voltage).
• Reliability / life — Endurance rating of 2000 hours at 105°C under rated voltage.
• Temperature range — Operating range from -55°C to +105°C for broad environmental tolerance.
• Package and assembly — Surface-mount radial can (φ8×11.7 mm), supplied in embossed carrier taping with moisture-proof packing; compatible with lead-free reflow peak at 260°C per series specification.
• Polarized — Designed as a polarized capacitor for DC applications.
• RoHS compliant — Conforms to RoHS directive per product data.

Typical Applications

• General-purpose power rail filtering — 390 µF capacitance and low ESR (14 mΩ at 100 kHz) help smooth low-voltage DC rails and reduce ripple in general electronics designs.
• Decoupling for high-frequency loads — High frequency ripple rating (4.95 A at 300 kHz) and low loss tangent support decoupling near switching power stages.
• Bulk energy storage in compact boards — Compact φ8×11.7 mm SMD can provides significant capacitance in a small footprint for space-constrained designs.

Unique Advantages

• High capacitance in a small SMD package — 390 µF in a φ8×11.7 mm package reduces board area compared to larger through-hole alternatives.
• Low-loss performance at high frequency — 14 mΩ ESR at 100 kHz and tan δ 0.12 (20°C, 120 Hz) keep dissipation low under dynamic loads.
• Broad ripple handling — Specified ripple currents at both 120 Hz and 300 kHz provide predictable thermal and electrical behavior across frequency bands.
• Robust temperature endurance — Rated for -55°C to 105°C with a 2000 h life at 105°C, supporting long-term operation in elevated-temperature environments.
• SMD-friendly supply and packaging — Embossed carrier taping with moisture-proof packing streamlines automated pick-and-place and reflow processes.
• Manufacturer support and availability — Nichicon RHS series product in mass production, simplifying procurement and lifecycle planning.

Why Choose RHS1D391MCN1GS?

RHS1D391MCN1GS delivers a blend of high capacitance, low ESR and strong ripple capability in a compact surface-mount conductive polymer aluminum package. Its rated 20 V voltage, -55°C to +105°C operating range and 2000-hour endurance at 105°C make it suitable for designers seeking reliable bulk and decoupling capacitance in space-constrained PCBs.

This part is particularly well suited to engineers and procurement teams working on general-purpose power distribution, high-frequency decoupling and compact energy-storage needs where consistent electrical characteristics and SMD assembly compatibility are important.

Request a quote or submit a procurement inquiry to receive pricing and availability information for RHS1D391MCN1GS.