RKS1D180MCNAFEGS

The RKS1D180MCNAFEGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor offering 18 µF capacitance at 20 V. Engineered for compact SMD designs, it combines low ESR, high allowable ripple current, and extended high-temperature endurance for demanding power-decoupling and filtering applications.

With an operating range from −55 °C to 125 °C and a rated lifetime of 3000 hours at 125 °C, this part targets systems that require reliable performance under elevated temperature and high-frequency stress while maintaining a small package footprint (φ6.3 × 5.8 mm).

Key Features

• Conductive polymer aluminum construction — Solid electrolyte design optimized for low-loss operation and stable electrical characteristics.
• Capacitance & tolerance — 18 µF with ±20% tolerance at 120 Hz, 20 °C, suitable for targeted decoupling and bulk filtering requirements.
• Rated voltage — 20 V nominal rating for common low-voltage power rails.
• Low ESR and high-frequency performance — ESR of 50 mΩ at 20 °C / 100 kHz and a high-frequency ripple current rating of 900 mA at 300 kHz for effective high-speed noise suppression.
• Ripple current capability — 90 mA at 120 Hz (low frequency) for robust handling of both low- and high-frequency ripple currents.
• High-temperature endurance — Rated life of 3000 hours at 125 °C, with endurance limits specified for capacitance, tan δ and ESR after test.
• Leakage and dissipation — Leakage current specified at 100 µA and tan δ (DF) of 0.12 measured at 20 °C, 120 Hz.
• SMD package and reflow readiness — φ6.3 × 5.8 mm radial can SMD package designed for lead-free reflow soldering (260 °C peak correspondence) and supplied on embossed carrier tape with moisture-proof packing.
• RoHS compliant — Conforms to RoHS directive requirements.

Typical Applications

• Power management modules — Decoupling and bulk smoothing for DC‑DC converters and regulator outputs where low ESR and high ripple current improve transient response.
• High-frequency power rails — Filtering and noise suppression on switching power supplies and point-of-load circuits leveraging the 50 mΩ ESR at 100 kHz and 900 mA high-frequency ripple rating.
• Industrial electronics — Power filtering in equipment operating across wide temperature ranges, supported by a −55 °C to 125 °C operating window and 3000-hour high-temperature life.
• Compact SMD designs — Space-constrained boards requiring SMD capacitors with reliable reflow compatibility and embossed carrier taping for automated assembly.

Unique Advantages

• High ripple-current tolerance: 900 mA at 300 kHz and 90 mA at 120 Hz enable effective handling of both high-frequency switching ripple and low-frequency load variations.
• Low ESR for improved efficiency: 50 mΩ ESR at 100 kHz reduces loss and heat generation in power conversion paths.
• Extended high-temperature life: 3000 hours at 125 °C supports long-term reliability in thermally challenging environments.
• Compact SMD footprint: φ6.3 × 5.8 mm package minimizes board area while supporting automated placement and lead‑free reflow processes.
• Predictable leakage and dissipation: Specified leakage current (100 µA) and tan δ (0.12) provide measurable bounds for power-system design and thermal budgeting.
• Production-ready packaging: Embossed carrier taping with moisture-proof packing streamlines inventory handling and surface-mount assembly flow.

Why Choose RKS1D180MCNAFEGS?

RKS1D180MCNAFEGS is positioned for engineers seeking a compact SMD conductive polymer capacitor that balances low ESR, high ripple capability, and proven high-temperature endurance. Its electrical specifications are tailored to demanding power filtering and decoupling roles where thermal resilience and frequency performance are critical.

The part suits designs that require measurable, verifiable electrical limits—capacitance, ESR, leakage, and life—backed by a datasheet-defined endurance profile and RoHS compliance. It is appropriate for teams focusing on robust, repeatable power-supply behavior in compact assemblies and production-volume surface-mount processes.

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