RSA1A121MCN1GS

The RSA1A121MCN1GS is a surface-mount conductive polymer aluminum solid electrolytic capacitor from Nichicon's RSA series. It delivers 120 µF capacitance at a 10 V rating in a compact φ6.3 × 5.7 mm SMD can, optimized for applications that require high capacitance and low equivalent series resistance.

Designed for general-purpose SMD electronics, this component combines low ESR, high ripple-current capability and a wide operating temperature range to support compact power and decoupling designs where reliability under thermal stress matters.

Key Features

• Capacitance & Voltage — 120 µF rated capacitance with a 10 V rating and tolerance of −20% to +20%.
• Low ESR & High Ripple Handling — ESR of 18 mΩ (measured at 20°C/100 kHz) and a high-frequency ripple current rating of 2.9 A (300 kHz) enable effective AC ripple dissipation in tight layouts.
• Frequency and Loss Characteristics — Tangent of loss angle (tan δ) of 0.12 at 20°C, 120 Hz, supporting stable performance across common signal frequencies.
• Reliability & Endurance — Load life of 2000 hours at 105°C, with specified limits for capacitance change, tan δ and ESR after endurance testing.
• Thermal Range — Rated for operation from −55°C to +105°C to accommodate a broad set of environmental conditions.
• Package & Mounting — Compact radial can SMD package (φ6.3 × 5.7 mm) for surface-mount assembly; supplied in embossed carrier taping with moisture-proof packing for automated placement.
• Polarized — Designed as a polarized capacitor for appropriate circuit topologies.
• RoHS Compliant & Production Ready — RoHS compliant and listed as mass production status.

Typical Applications

• General-purpose SMD circuits — Provides bulk capacitance where compact size and low ESR are required for board-level designs.
• Power-supply filtering — High-frequency ripple current rating (2.9 A at 300 kHz) and low ESR (18 mΩ) support filtering and smoothing in compact power stages.
• High-density electronics — Small φ6.3 × 5.7 mm footprint suited to space-constrained surface-mount assemblies.

Unique Advantages

• Compact high capacitance — 120 µF in a φ6.3 × 5.7 mm SMD can reduces board area for equivalent capacitance.
• Effective ripple dissipation — Low ESR combined with a 2.9 A high-frequency ripple current rating enables reliable operation under significant AC stress.
• Thermal endurance — 2000-hour life at 105°C provides predictable long-term behavior in elevated-temperature environments.
• Predictable loss characteristics — Specified tan δ (0.12 at 20°C, 120 Hz) and measured ESR at 100 kHz allow designers to model frequency-dependent performance more accurately.
• Production-ready packaging — Embossed carrier taping and moisture-proof packing support automated assembly and handling workflows.
• Regulatory compliance — RoHS compliant to meet common environmental directives.

Why Choose RSA1A121MCN1GS?

RSA1A121MCN1GS positions itself as a compact, low-ESR conductive polymer aluminum capacitor for general-purpose SMD applications where high capacitance and strong ripple-current capability are required. Its combination of 120 µF capacitance, 10 V rating, 18 mΩ ESR (20°C/100 kHz) and a 2000-hour life at 105°C makes it suitable for designs that need reliable decoupling and filtering in constrained board areas.

This Nichicon RSA-series part is particularly appropriate for engineers specifying components for dense power delivery networks and compact electronic assemblies that require verifiable thermal endurance and assembly-friendly packaging.

To request a quote or discuss availability and lead times for RSA1A121MCN1GS, submit a quote request or contact sales for pricing and volume options.