RFA0J181MCN1GS

The RFA0J181MCN1GS is a surface-mount conductive polymer aluminum solid electrolytic capacitor engineered for general-purpose power applications. It delivers high capacitance in a compact φ5×5.7 mm can-style SMD package and is optimized for low ESR and high ripple current handling.

Designed for robust operation across a wide temperature range, this part offers 180 µF capacitance at 6.3 V with a rated lifetime of 2000 hours at 105°C, making it suitable for designs that require stable filtering and energy storage under elevated temperature conditions.

Key Features

• Dielectric / Construction — Conductive polymer aluminum solid electrolytic capacitor construction for low ESR and stable performance.
• Capacitance and Tolerance — 180 µF with ±20% tolerance (measured at 120 Hz, 20°C).
• Rated Voltage — 6.3 V (surge 7.2 V).
• Low Loss — tan δ = 0.12 (20°C, 120 Hz), supporting efficient AC performance.
• Very Low ESR — 17 mΩ measured at 20°C / 100 kHz, reducing voltage drop and heat under AC ripple.
• High Ripple Current Capability — Rated ripple current 339 mA at 120 Hz and 3.39 A at 300 kHz (frequency coefficient: 0.10 at 120 Hz; 1.00 at 100 kHz and 300 kHz).
• Leakage Current — Specified leakage current 567 µA (measured after 2 minutes at 20°C, rated voltage).
• Reliability / Life — Endurance: 2000 hours at 105°C under rated voltage with defined limits on capacitance change, tan δ and ESR.
• Thermal Range — Operating temperature range −55°C to +105°C.
• Package & Mounting — Surface mount, case size φ5 × 5.7 mm; supplied in embossed carrier taping with moisture-proof packing; compatible with lead-free reflow peak 260°C.
• Environmental Compliance — RoHS compliant.

Typical Applications

• General Purpose Power Filtering — Bulk decoupling and smoothing where low ESR and reliable ripple handling are required.
• High-Frequency Power Circuits — Suitable for circuits requiring high ripple capability at RF switching frequencies (rated ripple current specified at 100 kHz and 300 kHz).
• Compact Power Modules — Small φ5×5.7 mm SMD can for space-constrained boards that need high capacitance in a small footprint.

Unique Advantages

• Low ESR for improved efficiency: 17 mΩ ESR at 100 kHz reduces conductor losses and thermal stress in power stages.
• High ripple current handling: 3.39 A at 300 kHz enables robust performance in high-frequency switching environments.
• Compact SMD form factor: φ5×5.7 mm package provides 180 µF capacitance without large board area.
• Long elevated-temperature life: 2000 hours at 105°C supports sustained operation under thermal stress.
• Assembly-ready packaging: Embossed carrier taping and moisture-proof packing with lead-free reflow compatibility simplify surface-mount assembly.
• Measurable, verifiable specs: Performance is specified with measurement conditions (e.g., tan δ at 120 Hz/20°C, ESR at 100 kHz) for predictable design behavior.

Why Choose RFA0J181MCN1GS?

RFA0J181MCN1GS positions itself as a compact, high-capacitance SMD solution for designs that demand low ESR and strong ripple-current capability in a small package. Its conductive polymer construction, defined endurance at 105°C, and explicit frequency-ripple data make it appropriate for engineers specifying capacitors for power filtering and energy-storage roles in space-constrained PCBs.

This part is well suited to design teams and procurement looking for a production-ready, RoHS-compliant capacitor with clear, testable specifications and packaging optimized for automated assembly.

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