RKS1C121MCNAJJGS

The RKS1C121MCNAJJGS is a surface-mount conductive-polymer aluminum solid electrolytic capacitor offering 120 µF capacitance at a 16 V rating. Housed in a compact φ10 × 10 mm radial can SMD package, it targets general-purpose electronic applications that require low ESR, high ripple tolerance and extended high-temperature endurance.

Key value propositions include low equivalent series resistance (20 mΩ at 20°C/100 kHz), high allowable ripple current (2.1 A at 300 kHz), and a long rated life of 3000 hours at 125°C, combined with RoHS compliance and moisture-proof embossed carrier taping for SMT assembly.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a rated voltage of 16 V and tolerance of -20% to +20% (measured at 120 Hz, 20°C).
• Conductive-Polymer Aluminum Construction — Solid electrolytic design delivering reliable electrical characteristics suited for demanding temperature and ripple conditions.
• Low ESR — 20 mΩ ESR specified at 20°C/100 kHz to minimize power loss and improve efficiency in high-frequency environments.
• High Ripple Current Capability — Rated low-frequency ripple current of 210 mA (120 Hz) and high-frequency ripple current of 2.1 A (300 kHz) to support load variations and switching supplies.
• High-Temperature Endurance — Rated life of 3000 hours at 125°C, with endurance characteristics specified for capacitance, tan δ and ESR after testing.
• Loss Angle (tan δ) — tan δ = 0.12 (measured at 20°C, 120 Hz) for predictable loss behavior in AC conditions.
• Leakage Current — Specified leakage current up to 100 µA (after conditioning per datasheet guidelines).
• SMT-Compatible Packaging — φ10 × 10 mm SMD radial can with embossed carrier taping and moisture-proof packing; compatible with lead‑free reflow profiles up to a 260°C peak.
• Operating Temperature Range — -55°C to +125°C for broad environmental tolerance.
• RoHS Compliant — Meets RoHS directive requirements stated in the product datasheet.

Typical Applications

• General-purpose electronics — Suited to assemblies that require a 120 µF, 16 V SMD capacitor with low ESR and long life for general smoothing and energy storage needs.
• High-ripple current environments — Appropriate where high-frequency ripple currents (up to 2.1 A at 300 kHz) must be handled without significant heating or degradation.
• Elevated-temperature assemblies — Designed for applications that demand stable performance and endurance at temperatures up to 125°C (3000-hour rated life at 125°C).

Unique Advantages

• Low ESR for efficient operation: 20 mΩ ESR at 100 kHz reduces power loss and supports high-frequency circuit behavior.
• High ripple tolerance: 2.1 A high-frequency ripple rating and 210 mA at 120 Hz provide margin for switching and load-transient conditions.
• Long high-temperature life: 3000-hour endurance at 125°C helps improve reliability in thermally demanding designs.
• SMD radial-can convenience: Compact φ10 × 10 mm package with embossed carrier taping and moisture-proof packing streamlines automated PCB assembly.
• Predictable electrical loss: Specified tan δ of 0.12 at 120 Hz and 20°C aids in predictable AC performance and thermal planning.
• Regulatory compliance: RoHS‑compliant construction supports regulatory requirements for lead‑free assemblies.

Why Choose RKS1C121MCNAJJGS?

RKS1C121MCNAJJGS is positioned for designers seeking a compact SMD aluminum solid electrolytic capacitor that combines high capacitance, low ESR and strong ripple-current capability with proven high-temperature endurance. Its conductive-polymer construction and a 3000-hour life rating at 125°C make it suitable for general-purpose applications where long-term stability under elevated temperature and ripple load is required.

This part is well suited to OEMs and engineers specifying components for robust, automated assemblies that need reliable smoothing, energy storage and ripple handling in a compact radial-can SMD form factor, while meeting RoHS requirements and lead‑free reflow processes up to a 260°C peak.

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