RKS1D181MCNAHHGS

The RKS1D181MCNAHHGS is a Nichicon conductive polymer aluminum solid electrolytic surface-mount capacitor specified at 180 µF and 20 V. It combines low ESR, high allowable ripple current and a compact φ8 × 8.7 mm can-style SMD package for demanding power-decoupling and filtering roles in compact electronics.

Designed for elevated temperature operation and long life, this capacitor supports an operating temperature range of −55 °C to +125 °C and a rated load life of 3000 hours at 125 °C, making it suitable for power rails that require sustained ripple handling and thermal endurance.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance at a rated voltage of 20 V with a tolerance of −20% to +20%.
• Low Loss (tan δ) — tanδ = 0.12 measured at 20 °C, 120 Hz, enabling predictable AC performance for filter and decoupling networks.
• Low ESR — ESR of 30 mΩ at 20 °C and 100 kHz provides low impedance at high frequencies for improved transient response.
• High Ripple Capability — Rated low-frequency ripple current 160 mA (120 Hz) and high-frequency ripple current 1.6 A (300 kHz), supporting both mains-frequency and switching-power converter applications.
• Leakage Current — Rated leakage current of 180 µA for predictable standby and bias conditions.
• Robust Thermal Endurance — Endurance life of 3000 hours at 125 °C; specified operating range from −55 °C to +125 °C.
• SMD Can Package — φ8 × 8.7 mm radial can-style SMD package with surface-mount land recommendation 8.3 × 8.3 mm; supplied in embossed carrier tape with moisture-proof packing.
• Reflow Compatibility — Designed for lead-free reflow soldering condition with peak solder temperature allowance up to 260 °C as specified for the series.
• RoHS Compliance — Series-level documentation indicates compliance with RoHS directives.

Typical Applications

• Point-of-load power filtering — Low ESR and high ripple current handle switching converter output filtering and transient suppression on regulator outputs.
• Embedded power rails — Compact SMD can provides bulk and decoupling capacitance in space-constrained embedded and industrial control boards.
• Telecom and networking power systems — High-frequency ripple capability and thermal endurance support power modules and line cards operating under sustained load.

Unique Advantages

• High ripple handling in a compact footprint — 1.6 A high-frequency ripple current with 30 mΩ ESR delivers effective filtering without large can sizes.
• Extended high-temperature life — 3000 hours at 125 °C provides predictable lifetime for designs exposed to elevated operating temperatures.
• Predictable AC characteristics — Specified tanδ and ESR measurement conditions help engineers model AC performance in converter and decoupling networks.
• SMD-ready packaging — Embossed carrier taping and moisture-proof packing streamline surface-mount assembly and handling.
• Broad operating range — −55 °C to +125 °C rating supports applications that require wide temperature tolerance.

Why Choose RKS1D181MCNAHHGS?

RKS1D181MCNAHHGS is positioned for designs that require compact bulk capacitance with low ESR and strong ripple performance under elevated temperatures. Its combination of 180 µF capacitance, 20 V rating, and series-proven endurance makes it suitable for engineers implementing power-supply decoupling, converter outputs, and embedded rail stabilization where thermal and frequency performance matter.

This part is a good fit for product teams seeking a durable, surface-mount conductive polymer aluminum capacitor that supports lead-free reflow assembly and predictable electrical characteristics across a wide temperature span.

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