RNU0G821MDN1

The RNU0G821MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial lead can, rated 4 V with 820 µF capacitance and ±20% tolerance. It combines low ESR and high ripple-current capability with a wide operating temperature range for general purpose applications.

Designed for use where compact, high-capacitance, low-impedance bulk storage is required, this part offers measurable benefits in designs that demand high-frequency ripple handling and extended high-temperature life.

Key Features

• Capacitance & Voltage — 820 µF capacitance at a 4 V rated voltage with ±20% tolerance for predictable energy storage in low-voltage systems.
• Low ESR — 7 mΩ equivalent series resistance measured at 20°C/100 kHz, supporting low-impedance performance at high frequencies.
• High Ripple Current — Rated ripple current of 570 mA at 120 Hz and up to 5.7 A at 300 kHz, with a published 100 kHz ripple current rating of 5.7 A for elevated-frequency applications.
• Long Endurance — 2000 hours rated life at 105°C, providing durability for designs exposed to sustained elevated temperatures.
• Wide Operating Temperature — Operates from −55°C to +105°C to accommodate a broad range of environmental conditions.
• Compact Radial Package — φ8 × 11.5 mm can with 3.5 mm lead spacing (±0.5 mm), radial lead mounting for through-hole assemblies and ease of hand or automated insertion.
• Leakage Current — 656 µA specified leakage current (measured after 2 minutes at 20°C), enabling predictable bias characteristics in circuit designs.
• RoHS Compliant — Meets RoHS requirements as indicated in the product information.

Typical Applications

• General Purpose Electronics — Suitable for general purpose circuits that require a conductive polymer aluminum capacitor with compact radial packaging and 820 µF capacitance.
• Power Supply Filtering and Decoupling — Low ESR (7 mΩ at 100 kHz) and high ripple-current capability make this part appropriate where bulk smoothing and decoupling are needed at low voltage rails.
• High-Frequency Power Conditioning — Ripple-current performance up to 5.7 A at 300 kHz supports applications with elevated-frequency ripple components.

Unique Advantages

• Measured Low Impedance — 7 mΩ ESR at 20°C/100 kHz provides a clearly specified low-impedance characteristic for high-frequency operation.
• Documented High Ripple Capability — Ripple current ratings specified across frequencies (570 mA at 120 Hz; 5.7 A at 300 kHz) give designers quantifiable headroom for AC stress conditions.
• Temperature and Endurance Data — 2000 hours at 105°C life rating and an operating range of −55°C to +105°C support thermal planning and reliability assessments.
• Radial Lead Form Factor — φ8×11.5 mm can with 3.5 mm lead spacing simplifies mechanical integration in through-hole assemblies and prototypes.
• Predictable Leakage — Specified leakage current of 656 µA (after 2 minutes at 20°C) helps maintain bias stability in low-voltage designs.

Why Choose RNU0G821MDN1?

RNU0G821MDN1 positions itself as a robust, general purpose conductive polymer aluminum capacitor offering low ESR, high ripple-current capability, and an established high-temperature life rating. Its combination of 820 µF capacitance at 4 V, compact radial package, and quantified electrical characteristics make it suitable for designs that require dependable bulk capacitance with explicit performance metrics.

This part is well suited to engineers and procurement teams seeking a documented, production-ready radial lead capacitor for power filtering, decoupling, and high-frequency ripple environments in general purpose electronic assemblies.

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