RSA1A221MCN1GS

The RSA1A221MCN1GS from Nichicon is a surface-mount conductive polymer aluminum electrolytic capacitor in the RSA series designed for general-purpose power applications. It delivers 220 µF nominal capacitance at a 10 V rating in a compact φ6.3 × 5.7 mm SMD can, combining low ESR and high ripple-current capability with long-term endurance.

Targeted at board-level power filtering and bulk decoupling where space is limited, the part balances high-frequency performance and thermal endurance with RoHS-compliant materials and embossed carrier taping for automated assembly.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with a rated voltage of 10 V and tolerance of -20% to +20% (measured at 120 Hz, 20°C).
• Conductive Polymer Construction — Solid electrolyte polymer design for stable electrical characteristics and low impedance compared with traditional wet electrolytes.
• Low ESR — ESR specified at 20 mΩ measured at 20°C/100 kHz, supporting lower loss and improved high-frequency decoupling.
• High Ripple Current Capability — Rated ripple current of 300 mA at 120 Hz and 3.0 A at 300 kHz, enabling use on both low- and high-frequency power rails.
• Tangent of Loss Angle (tan δ) — tan δ = 0.12 specified at 20°C, 120 Hz to characterize dielectric loss.
• Endurance & Temperature Range — Load life specified as 2000 hours at 105°C; operating temperature range is -55°C to +105°C for wide environmental tolerance.
• Leakage Current — Specified leakage current of 500 µA (measured after rated voltage application per datasheet conditions).
• Package & Assembly — Surface-mount radial can (φ6.3 × 5.7 mm) supplied in embossed carrier taping with moisture-proof packing for automated pick-and-place and storage.
• Regulatory — RoHS compliant.

Typical Applications

• General-purpose power filtering — 220 µF capacitance and 10 V rating make this capacitor suitable for bulk decoupling and smoothing on board-level power rails within the -55°C to +105°C temperature window.
• High-frequency power rails — Low ESR (20 mΩ at 100 kHz) and 3.0 A ripple capability at 300 kHz support high-frequency switching regulator output filtering and decoupling.
• Compact SMD designs — The φ6.3 × 5.7 mm SMD can and defined land size (6.5 × 6.5 mm) suit space-constrained boards that require surface-mount bulk capacitance.

Unique Advantages

• Low loss at high frequency — 20 mΩ ESR at 100 kHz and a 0.12 tan δ (120 Hz) reduce dissipation and improve voltage stability on fast-switching power stages.
• High ripple handling — Rated ripple currents up to 3.0 A (300 kHz) and 300 mA (120 Hz) enable reliable filtering across a wide frequency range.
• Thermal endurance — 2000 hours at 105°C life rating supports longer operational stability in elevated-temperature environments.
• Compact SMD form factor — Small φ6.3 × 5.7 mm can provides significant capacitance in a board-friendly surface-mount package to reduce BOM space requirements.
• Automated assembly ready — Supplied in embossed carrier taping with moisture-proof packing to support high-throughput surface-mount assembly processes.
• RoHS compliant — Meets RoHS requirements for material compliance in modern designs.

Why Choose RSA1A221MCN1GS?

RSA1A221MCN1GS positions itself as a compact, high-capacitance SMD solution that addresses board-level power conditioning where low ESR and significant ripple-current capability are required. Its conductive polymer construction, combined with a 2000-hour endurance at 105°C and a broad operating temperature range (-55°C to +105°C), provides a balance of performance and reliability for demanding general-purpose power designs.

This part is well suited to design engineers and procurement teams seeking a reliable surface-mount bulk capacitor for power rail decoupling and smoothing in compact assemblies, with packaging and handling compatible with automated production and storage requirements.

If you would like pricing, availability, or a formal quotation for RSA1A221MCN1GS, please request a quote or submit an inquiry to receive current lead-time and quantity information.