RKS1V121MCNAHHGS

The RKS1V121MCNAHHGS is a conductive polymer aluminum solid electrolytic surface-mount capacitor rated at 120 µF and 35 V. It combines low ESR and high allowable ripple current with extended high-temperature endurance for demanding power applications.

Designed for compact SMD assemblies, this part targets power-supply filtering and decoupling on medium-voltage rails where low loss, high-frequency performance and long life at elevated temperatures are required.

Key Features

• Capacitance and Voltage — 120 µF nominal capacitance with a rated voltage of 35 V and tolerance of ±20% (–20%~20%).
• Low Loss / High-Frequency Performance — tanδ of 0.12 measured at 20°C, 120 Hz, and an ESR of 30 mΩ at 20°C/100 kHz for low-loss operation in high-frequency circuits.
• High Ripple Current Capability — Low-frequency ripple current of 160 mA at 120 Hz and high-frequency ripple current of 1.6 A at 300 kHz to support switching regulator and converter applications.
• High-Temperature Endurance — Rated for operation from –55°C to 125°C with a rated lifetime of 3000 hours at 125°C.
• Leakage Current — Specified leakage current of 210 µA to support reliable bias behavior after voltage application.
• SMD Package and Handling — Radial can SMD package (φ8 × 8.7 mm) supplied in embossed carrier taping with moisture-proof packing; compatible with lead-free reflow soldering up to 260°C peak per series specification.
• RoHS Compliant — Conforms to RoHS requirements as stated in the product information.

Typical Applications

• DC‑DC Converters — Bulk and output filtering on 35 V rails where high-frequency ripple handling (1.6 A at 300 kHz) and low ESR (30 mΩ) improve regulator stability and transient response.
• Power Supply Smoothing — Input/output smoothing for switch-mode power supplies operating at elevated temperatures up to 125°C.
• High-Frequency Power Rails — Decoupling and noise suppression on high-speed power rails that demand low loss and stable ESR across frequency.

Unique Advantages

• Low ESR for Efficient Power Delivery: 30 mΩ ESR at 100 kHz reduces conduction loss and supports tighter voltage regulation in switching applications.
• High Ripple Endurance: Rated ripple currents (160 mA at 120 Hz and 1.6 A at 300 kHz) enable reliable operation with high switching activity and ripple stress.
• Extended High-Temperature Life: 3000 hours at 125°C provides design margin for thermally demanding environments and longer maintenance intervals.
• SMD Convenience with Reflow Compatibility: Radial can SMD format in embossed carrier tape supports automated placement and lead-free reflow up to 260°C per series guidance.
• Predictable Leakage Behavior: Specified leakage current of 210 µA aids in bias planning and backup-power considerations.

Why Choose RKS1V121MCNAHHGS?

RKS1V121MCNAHHGS delivers a balance of low ESR, high ripple capability and extended high-temperature endurance in a compact SMD package. These characteristics make it suitable for engineers designing power conversion, filtering and decoupling solutions where reliable performance at elevated temperatures and high switching frequencies is required.

Choose this part when you need a conductive polymer aluminum SMD capacitor that supports automated assembly, RoHS compliance, and long-term operation at up to 125°C while maintaining low loss and strong ripple handling on 35 V rails.

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