RNU1A821MCNASQ

The RNU1A821MCNASQ is a Nichicon RNU series conductive polymer solid aluminum electrolytic capacitor in a radial-lead can. It delivers 820 µF capacitance at a 10 V rating with low ESR and high ripple-current capability for general-purpose electronic designs.

Engineered for board-level power decoupling and energy buffering, this part offers a compact φ8 × 11.5 mm can, 3.5 mm lead spacing, a −55°C to 105°C operating range, and a rated life of 5000 hours at 105°C.

Key Features

• Capacitance & Voltage: 820 µF at 10 V rated voltage; ±20% tolerance for predictable capacitance range.
• Conductive Polymer Electrolyte: Solid polymer construction for low ESR and stable electrical performance.
• Low ESR: 10 mΩ ESR specified at 100 kHz, minimizing voltage drop and heat under high ripple conditions.
• High Ripple Current: Rated for 580 mA at 120 Hz and 5.8 A at 300 kHz, supporting both low- and high-frequency ripple demands.
• Leakage Current: Specified leakage current of 1,640 µA (after 2 minutes at 20°C), usable for general-purpose power circuits.
• Reliability & Lifetime: 5000 hours at 105°C endurance rating, with performance retention criteria defined for capacitance, tan δ and ESR.
• Thermal Range: Operating temperature range of −55°C to +105°C for broad environmental compatibility.
• Package & Mounting: Radial lead can, φ8 × 11.5 mm body, 3.5 mm lead spacing; supplied in bulk (no terminal forming), suitable for mass production assembly flows.
• Tangent of Loss Angle (tan δ): 0.08 specified, indicating controlled dielectric loss at 120 Hz, 20°C.
• RoHS Compliance: Conforms to RoHS directive requirements for restricted substances.

Typical Applications

• General-purpose power decoupling: Board-level filtering and decoupling where low ESR and reliable ripple handling are required.
• Switching power stages: Supports high-frequency ripple currents up to 300 kHz for switching regulators and converters.
• Bulk energy buffering: Local energy storage on power rails for transient suppression and voltage stability in electronic equipment.

Unique Advantages

• Low-loss operation: 10 mΩ ESR at 100 kHz reduces resistive losses and thermal rise in high-current applications.
• High ripple tolerance: 5.8 A rating at 300 kHz enables use directly on high-frequency switching nodes.
• Extended high-temperature life: 5000 hours at 105°C supports long-term reliability in thermally demanding environments.
• Compact radial package: φ8 × 11.5 mm can with 3.5 mm lead spacing provides a small board footprint for dense designs.
• Solid polymer chemistry: Conductive polymer electrolyte delivers stable performance and low tan δ (0.08) for consistent filtering behavior.
• RoHS compliant: Meets environmental restrictions for restricted substances.

Why Choose RNU1A821MCNASQ?

The RNU1A821MCNASQ combines conductive polymer technology, low ESR (10 mΩ at 100 kHz), and high ripple-current capability (up to 5.8 A at 300 kHz) in a compact radial-lead can. Its 820 µF capacitance and 10 V rating make it suitable for designers who need robust board-level power conditioning with predictable thermal and electrical behavior across −55°C to 105°C.

This part is well suited to general-purpose electronic equipment where sustained performance, long life (5000 hours at 105°C), and a small footprint are priorities. Backed by Nichicon’s RNU series specifications, it delivers verifiable electrical characteristics that simplify component selection for power rail stabilization and high-frequency ripple suppression.

Request a quote or submit an inquiry to discuss pricing, availability and lead times for the RNU1A821MCNASQ.