RNU1A821MDNASQ

The RNU1A821MDNASQ is a conductive polymer aluminum solid electrolytic capacitor in a radial-lead can designed for general-purpose power applications. It combines high capacitance (820 µF) with low ESR and high allowable ripple current to support smoothing, decoupling and energy storage on power rails.

Built for robust operation across a wide temperature range (−55°C to 105°C) and a 5000‑hour endurance at 105°C, this radial, polarized capacitor is optimized for designs that require compact size (φ8 × 11.5 mm) and reliable high-frequency performance.

Key Features

• Conductive polymer aluminum solid construction — Solid electrolyte architecture for stable capacitance and lower ESR compared with traditional electrolytics.
• High capacitance — 820 µF nominal capacitance with ±20% tolerance for bulk energy storage and smoothing on DC rails.
• Rated voltage — 10 V rated voltage suitable for low-voltage power systems.
• Low ESR — 10 mΩ ESR measured at 20°C/100 kHz, supporting efficient high-frequency decoupling and reduced power loss.
• High ripple-current capability — 580 mA at 120 Hz and 5.8 A at 300 kHz (frequency coefficient data available), enabling use with switching converters and high-speed power stages.
• Leakage current and reliability — 1640 µA leakage current (specified) and 5000 hours rated life at 105°C for long-term stability under elevated temperature operation.
• Radial lead package — φ8 × 11.5 mm can with 3.5 mm lead spacing (±0.5 mm) for through-hole mounting and straightforward PCB integration; radial lead type supports lead‑free flow soldering conditions.
• Wide operating temperature — −55°C to +105°C for use across industrial and general-purpose environments.
• RoHS compliant — Conforms to RoHS directive requirements.

Typical Applications

• Power supply decoupling — Bulk smoothing and transient suppression on low-voltage DC power rails where high capacitance and low ESR reduce voltage ripple.
• Switching regulator output filtering — Supports high-frequency switching converters with rated ripple current up to 5.8 A at high frequency and low ESR at 100 kHz.
• Energy storage and hold-up — Local energy reservoir for short hold-up or transient load demands in compact through-hole implementations.

Unique Advantages

• Low-loss, high-frequency performance: 10 mΩ ESR at 100 kHz minimizes losses and supports stability in high-speed power circuits.
• High ripple tolerance: Rated ripple currents of 580 mA (120 Hz) and 5.8 A (300 kHz) reduce internal heating and extend usable life in demanding switching environments.
• Compact through-hole form factor: φ8 × 11.5 mm radial can and 3.5 mm lead spacing enable space-efficient PCB layouts with simple mechanical mounting.
• Long endurance at elevated temperature: 5000 hours life rating at 105°C provides predictable aging characteristics for designs exposed to sustained high temperatures.
• Broad temperature operation: −55°C to +105°C ensures functionality across a wide range of environmental conditions.
• Regulatory compliance: RoHS compliance for use in regulated manufacturing environments.

Why Choose RNU1A821MDNASQ?

RNU1A821MDNASQ is positioned for engineers and procurement teams seeking a compact, high-capacitance conductive polymer solution for general-purpose power electronics. Its combination of 820 µF capacitance, low ESR (10 mΩ at 100 kHz), and high ripple-current capability addresses the needs of switching regulators, decoupling networks, and local energy storage in through‑hole applications.

The part’s 5000‑hour endurance at 105°C, wide −55°C to 105°C operating range, and RoHS compliance deliver predictable long-term performance and integration into standard assembly processes, making it suitable for a broad range of industrial and general-purpose electronic designs.

Request a quote or submit a product inquiry for RNU1A821MDNASQ to get pricing, availability and application support for your design requirements.