RDS1A221MCNAFEGS

The RDS1A221MCNAFEGS is a conductive polymer aluminum solid electrolytic surface-mount capacitor offering high capacitance in a compact SMD can. It delivers low ESR and high ripple-current capability in a small footprint, with extended endurance at elevated temperatures.

Engineered for compact power and thermal-challenging assemblies, this part targets designs that require bulk energy storage, power filtering and stable performance up to 125°C while maintaining compatibility with lead‑free reflow processes.

Key Features

• Conductive polymer aluminum construction Solid electrolyte design for stable capacitance and reliable electrical characteristics.
• Capacitance and rating 220 µF nominal capacitance at a rated voltage of 10 V with ±20% tolerance (120 Hz, 20°C).
• Low ESR and high ripple handling ESR 25 mΩ measured at 100 kHz (20°C) and rated ripple current up to 1.8 A at 300 kHz (also specified 180 mA at 120 Hz), enabling efficient high-frequency power filtering.
• Wide operating temperature and proven endurance Rated for −55°C to +125°C with a load life of 3000 hours at 125°C under rated voltage.
• SMD package and reflow compatible Surface-mount radial can (φ6.3 × 5.7 mm) with surface mount land size 6.5 × 6.5 mm; compatible with lead-free reflow peak at 260°C.
• Environmental compliance RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supply decoupling and bulk storage — Provides compact bulk capacitance for local energy storage and transient suppression in power circuits that demand high capacitance per volume.
• Switching regulator output filtering — Low ESR and high ripple-current rating support filtering at switching frequencies (specified performance at 300 kHz and 100 kHz).
• Compact embedded and industrial electronics — Small SMD can and surface-mount land profile enable use in space-constrained PCBs while maintaining thermal endurance.
• High-temperature assemblies — Designed to retain capacitance and electrical performance through prolonged exposure to elevated temperatures (3000 hours at 125°C).

Unique Advantages

• High ripple-current capability: Supports up to 1.8 A at 300 kHz (and specified values at lower frequencies), enabling robust performance in high-frequency power stages.
• Low ESR: 25 mΩ at 100 kHz reduces loss and heat generation, improving power-conversion efficiency.
• Extended high-temperature life: 3000 hours at 125°C gives predictable long-term behavior in thermally demanding environments.
• Compact SMD can: φ6.3 × 5.7 mm case and small PCB land footprint allow designers to save board space without sacrificing capacitance.
• Lead‑free reflow compatible: Peak reflow temperature rating of 260°C supports modern assembly processes.
• RoHS compliant: Conforms to applicable RoHS directives for environmental compliance.

Why Choose RDS1A221MCNAFEGS?

The RDS1A221MCNAFEGS combines high capacitance density, low ESR and high ripple-current capability in a compact, surface-mount conductive polymer aluminum package. Its 3000‑hour endurance at 125°C and lead‑free reflow compatibility make it well suited to designs that require reliable power performance in thermally stressed or space-constrained assemblies.

This capacitor is ideal for engineers specifying compact power filtering and bulk decoupling solutions where predictable high-frequency behavior, thermal endurance, and RoHS compliance are required.

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