RNU1D821MDN1

The RNU1D821MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial lead can package, designed for general-purpose power applications. It delivers 820 µF capacitance at a 20 V rating with low ESR and high ripple-current capability, making it suitable where bulk decoupling and power filtering are required under elevated temperatures.

Packaged for through-hole radial mounting with 5 mm lead spacing, the device targets engineers requiring reliable capacitance, high ripple handling, and endurance in compact can-style components.

Key Features

• Capacitance & Voltage 820 µF nominal capacitance with ±20% tolerance at a 20 V rated voltage for general-purpose energy storage and decoupling.
• Low ESR 12 mΩ equivalent series resistance measured at 20°C / 100 kHz to minimize losses and improve transient response.
• High Ripple Current 540 mA at 120 Hz (low frequency) and 5.4 A at 300 kHz (high frequency) rated ripple current for sustained AC stress handling in power circuits.
• Leakage Current Specified leakage current of 3,280 µA after standard conditioning, enabling predictable bias behavior.
• Endurance & Temperature Range Rated for 2,000 hours at 105°C, with an operating temperature range of −55°C to +105°C for elevated-temperature reliability.
• Package & Mounting Radial lead can package (φ10 × 12.5 mm) with 5 mm lead spacing (±0.5 mm tolerance) for through-hole assembly and bulk packaging for production volumes.
• Compliance RoHS-compliant construction.

Typical Applications

• Power Supplies Bulk filtering and smoothing in DC power supplies where 820 µF at 20 V and high ripple capability improve voltage stability.
• DC‑DC Converters Input/output decoupling and energy buffering for converters that demand low ESR and high-frequency ripple handling.
• Embedded & Industrial Electronics General-purpose decoupling and transient support in boards operating across −55°C to +105°C and requiring long endurance.

Unique Advantages

• High energy density in a compact can: 820 µF in a φ10 × 12.5 mm radial can provides significant capacitance for space-constrained through-hole designs.
• Low ESR for improved efficiency: 12 mΩ ESR at 100 kHz reduces I²R losses and supports better thermal and electrical performance under load.
• Robust ripple handling: 5.4 A rated ripple current at 300 kHz and 540 mA at 120 Hz supports both high-frequency switching and low-frequency stress.
• Designed for elevated-temperature use: 2,000 hours endurance at 105°C provides predictable lifetime behavior in hotter operating environments.
• Through-hole convenience: Radial lead configuration with 5 mm spacing simplifies PCB layout for legacy and repairable designs.
• RoHS compliant: Meets environmental requirements for restricted substances.

Why Choose RNU1D821MDN1?

RNU1D821MDN1 combines high capacitance, low ESR, and substantial ripple-current capability in a compact radial can, offering a reliable energy-storage solution for general-purpose power and decoupling needs. Its −55°C to +105°C operating range and 2,000-hour endurance at 105°C make it suitable for designs that require long-term stability under elevated temperatures.

This part is well suited to engineers and procurement teams specifying through-hole capacitors for power supplies, converters, and industrial electronics where predictable electrical performance, compact size, and RoHS compliance are required. Its radial package and bulk packaging support efficient assembly and volume production.

To request a quote or submit an inquiry for RNU1D821MDN1, please reference the part number and your required quantity and delivery timeline.