RKS1D121MCNAFGGS

The RKS1D121MCNAFGGS from Nichicon is a surface‑mount conductive polymer aluminum solid electrolytic capacitor offering 120 µF capacitance at a 20 V rating. It combines low ESR and high allowable ripple current in a compact φ6.3 × 7.7 mm SMD can for applications that demand stable filtering and energy buffering across a wide temperature range.

Designed for use in assemblies that undergo standard reflow processes, this part provides long endurance (3000 hours at 125°C) and is supplied in embossed carrier taping with moisture‑proof packing for automated placement and reliable storage.

Key Features

• Capacitance & Tolerance — 120 µF nominal with capacitance tolerance of -20% to 20% (measured at 20°C, 120 Hz).
• Rated Voltage — 20 V DC rated voltage suitable for mid‑voltage power domains.
• Low ESR — ESR of 30 mΩ measured at 20°C, 100 kHz, supporting low loss and stable operation at high frequencies.
• High Ripple Current Capability — Low frequency ripple current of 140 mA (120 Hz) and high frequency ripple current of 1.4 A (300 kHz) for effective AC filtering and decoupling.
• Wide Temperature Range & Endurance — Rated for -55°C to 125°C with a rated life of 3000 hours at 125°C, enabling extended operation in thermally demanding environments.
• Leakage & Dissipation — Leakage current specified at 120 µA and tangent of loss angle (tanδ) of 0.12 (20°C, 120 Hz) for predictable leakage and dissipation characteristics.
• SMD Can Package & Reflow Compatibility — φ6.3 × 7.7 mm radial can in SMD format, supplied in embossed carrier taping / moisture‑proof packing; compatible with reflow soldering conditions up to a 260°C peak per series documentation.
• Regulatory Compliance — RoHS‑compliant formulation and manufacturing.

Typical Applications

• Power supply filtering — Bulk smoothing and decoupling where 120 µF at 20 V and low ESR reduce voltage ripple and improve regulator stability.
• High‑frequency power stages — Use in switching regulators and power converters that require high frequency ripple handling (1.4 A at 300 kHz) and low loss at 100 kHz.
• Compact SMD assemblies — Board‑level energy buffering in space‑constrained designs taking advantage of the φ6.3 × 7.7 mm SMD can and taped packaging for automated assembly.

Unique Advantages

• Low ESR for efficient filtering: 30 mΩ ESR at 100 kHz minimizes loss and heat generation in high‑frequency circuits.
• High ripple tolerance: Rated ripple currents (140 mA @120 Hz, 1.4 A @300 kHz) enable reliable performance in both low‑ and high‑frequency applications.
• Extended high‑temperature life: 3000 hours at 125°C provides predictable endurance for thermally challenging designs.
• SMD can with reflow compatibility: Embossed carrier taping and moisture‑proof packing support automated placement and reflow processes (peak profile per series guidelines up to 260°C).
• Clear electrical characterization: Specified tanδ (0.12 at 20°C, 120 Hz) and leakage current rating (120 µA) simplify thermal and leakage budgeting in designs.
• RoHS compliant: Meets RoHS directive requirements for lead‑free assembly environments.

Why Choose RKS1D121MCNAFGGS?

RKS1D121MCNAFGGS delivers a combination of 120 µF capacitance, low ESR, and strong ripple current capability in a compact surface‑mount can suitable for automated production. Its wide operating temperature range (-55°C to 125°C) and 3000‑hour endurance at 125°C make it well suited to power electronics and high‑frequency circuits that require stable filtering over time and temperature.

This part is appropriate for engineers and procurement teams specifying robust SMD capacitors for power supply smoothing, decoupling in switching stages, and compact assemblies where reflow compatibility and tape‑and‑reel packaging are required.

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