RKS1H121MCNAJLGS

The RKS1H121MCNAJLGS is a surface-mount conductive polymer aluminum electrolytic capacitor offering 120 µF capacitance at a 50 V rating. It combines high capacitance density with low equivalent series resistance and rated ripple current to support power delivery and decoupling in compact assemblies.

Designed for general-purpose applications, this SMD radial-can device provides a wide operating temperature range and extended load life, delivering reliable performance where sustained high-temperature endurance and high-frequency ripple handling are required.

Key Features

• Construction: Conductive polymer aluminum solid electrolyte for stable electrical properties and solid-state reliability.
• Capacitance & Tolerance: 120 µF with capacitance tolerance of -20% to +20% at 120 Hz, 20°C.
• Rated Voltage: 50 V nominal rating for medium-voltage power rails.
• Low ESR: 25 mΩ measured at 20°C, 100 kHz, enabling effective high-frequency decoupling.
• High Ripple Current: 160 mA at 120 Hz (low frequency) and 1.6 A at 300 kHz (high frequency) for robust AC ripple handling in power circuits.
• Leakage Current: 300 µA specified leakage current.
• Temperature & Endurance: Rated for -55°C to +125°C with a rated load life of 3000 hours at 125°C.
• Mounting & Package: Surface-mount radial can (φ10 × 12.4L) packaged in embossed carrier taping with moisture-proof packing for automated assembly.
• Manufacturing & Compliance: Lead-free reflow compatible (260°C peak per solder profile guidance) and RoHS compliant; product is in mass production.

Typical Applications

• Power-supply filtering: Bulk decoupling and smoothing on medium-voltage rails where high capacitance and low ESR reduce voltage ripple.
• DC-DC converters: Input/output filtering on switching regulators that require high ripple-current capability and stable high-frequency performance.
• High-frequency power modules: Local decoupling for power stages that demand low impedance at 100 kHz–300 kHz frequencies.

Unique Advantages

• High capacitance in an SMD can: 120 µF in a compact φ10 × 12.4 mm package helps reduce board area while preserving bulk energy storage.
• Low ESR for better transient response: 25 mΩ at 100 kHz lowers voltage drop under load and improves high-frequency filtering effectiveness.
• Strong ripple-current handling: Specified 1.6 A at 300 kHz supports demanding switching applications and reduces thermal stress under AC conditions.
• Extended high-temperature life: 3000 hours at 125°C provides predictable end-of-life behavior for designs exposed to elevated operating temperatures.
• Assembly-ready packaging: Embossed carrier taping with moisture-proof packing simplifies pick-and-place and reflow assembly processes.
• Regulatory alignment: RoHS compliant to support environmental requirements in many markets.

Why Choose RKS1H121MCNAJLGS?

The RKS1H121MCNAJLGS positions itself as a robust, general-purpose SMD aluminum polymer capacitor that balances high capacitance, low ESR, and substantial ripple-current capability in a compact radial-can package. Its wide operating temperature range and 3000-hour life at 125°C make it suitable for designs that require sustained performance under thermal stress.

Choose this part for compact power systems, switching regulators, and other assemblies that demand reliable decoupling and filtering at medium voltages. The combination of documented electrical performance, reflow compatibility, and production-ready packaging supports efficient integration into volume manufacturing.

Request a quote or contact sales to discuss availability, lead times, and volume pricing for RKS1H121MCNAJLGS. Technical and procurement inquiries are welcome to ensure this capacitor meets your design and production requirements.