RKS1E121MCNAHGGS

The RKS1E121MCNAHGGS is a surface-mount conductive polymer aluminum electrolytic capacitor with a rated capacitance of 120 µF and a rated voltage of 25 V. It delivers low equivalent series resistance and high allowable ripple current for applications that require robust high-frequency smoothing and decoupling.

Designed for demanding temperature and endurance requirements, this part supports operation from −55 °C to +125 °C and a tested load life of 3000 hours at 125 °C. It is supplied in embossed carrier taping with moisture-proof packing for reliable SMD assembly.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance at 25 V rated voltage with capacitance tolerance of −20% to +20% (±20%).
• Low Loss — Tangent of loss angle (tan δ) of 0.12 measured at 20 °C, 120 Hz for predictable AC performance.
• Low ESR — ESR of 30 mΩ measured at 20 °C and 100 kHz, enabling efficient high-frequency filtering and lower dissipation.
• High Ripple Current Capability — Low-frequency ripple current of 160 mA (120 Hz) and high-frequency ripple current of 1.6 A (300 kHz) for sustained ripple handling in power circuits.
• Leakage Current — Leakage current specified at 150 µA for controlled standby losses and predictable bias behavior.
• Thermal Endurance — Rated operating temperature range −55 °C to +125 °C with a verified life of 3000 hours at 125 °C.
• SMD Package & Assembly — Radial can SMD package (φ8 × 7.7 mm) with surface-mount land size 8.3 × 8.3 mm; supplied in embossed carrier tape and moisture-proof packing. Compatible with lead-free reflow peak up to 260 °C per series soldering guidance.
• Series pedigree — Part of the RKS series of conductive polymer aluminum solid electrolytic capacitors with series-level specifications for high allowable ripple current and high-frequency performance.

Typical Applications

• Power-supply decoupling and smoothing — Low ESR and high ripple capability make this capacitor suitable for output filtering and bulk decoupling on DC–DC converters and regulator rails.
• High-frequency switching power — The 30 mΩ ESR at 100 kHz and 1.6 A high-frequency ripple rating support filtering in high-frequency switching environments.
• Industrial and telecom power modules — Extended temperature range (−55 °C to +125 °C) and 3000-hour endurance at 125 °C support sustained operation in demanding thermal environments.

Unique Advantages

• Predictable high-frequency performance: Low ESR (30 mΩ at 100 kHz) and specified tan δ ensure controlled AC behavior for filtering and noise suppression.
• High ripple handling: Rated for 1.6 A at 300 kHz and 160 mA at 120 Hz, enabling sustained ripple dissipation in switching power designs.
• High-temperature endurance: 3000 hours life at 125 °C provides long-term reliability in elevated-temperature applications.
• SMD-ready packaging: Embossed carrier taping with moisture-proof packing and reflow compatibility (260 °C peak) simplifies automated assembly and reduces handling risk.
• Compact footprint: φ8 × 7.7 mm can size with defined land pattern (8.3 × 8.3 mm) fits space-constrained board layouts while delivering high capacitance.
• Series-level compliance: Series documentation indicates RoHS directive alignment and soldering heat resistance guidance for lead-free assembly processes.

Why Choose RKS1E121MCNAHGGS?

RKS1E121MCNAHGGS combines the high capacitance of aluminum electrolytic technology with conductive-polymer electrolyte characteristics—delivering low ESR, strong ripple capability and validated endurance at elevated temperature. These attributes make the part well suited for engineers specifying reliable SMD bulk or output capacitors where thermal robustness and high-frequency behavior are critical.

This capacitor is ideal for design teams and procurement sourcing components for power conversion, industrial power modules, and telecom equipment that require a compact SMD solution with defined electrical and thermal performance over extended operating periods.

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