RNL1E821MDS4

The RNL1E821MDS4 is a conductive polymer aluminum solid electrolytic capacitor in a radial lead can, offering 820 µF capacitance at 25 V. Designed for general-purpose power applications, it delivers high capacitance in a compact φ10×16 mm package with radial leads and 5 mm lead spacing.

Built for high-frequency and high-ripple environments, this part combines low ESR and strong ripple-current capability with wide temperature performance (−55 °C to 105 °C) and a 2000-hour load life at 105 °C, making it suitable for robust through-hole power designs.

Key Features

• Conductive polymer aluminum solid electrolyte — Provides solid-electrolyte performance characteristics with reliable polarization for power filtering and decoupling.
• Capacitance and tolerance — 820 µF with ±20% tolerance at 120 Hz, 20 °C for predictable bulk energy storage.
• Rated voltage — 25 V rated voltage suitable for a wide range of low-voltage power rails.
• Low ESR — ESR of 10 mΩ measured at 20 °C / 100 kHz, supporting efficient high-frequency operation and reduced losses.
• High ripple-current capability — 580 mA at 120 Hz (low frequency) and 5.8 A at 300 kHz (high frequency) to support switching regulators and high-frequency power stages.
• Leakage and dissipation — Leakage current specified at 2050 µA and tanδ (DF) of 0.12 at 20 °C, 120 Hz for controlled loss characteristics.
• Temperature and endurance — Operating range −55 °C to 105 °C with a rated load life of 2000 hours at 105 °C.
• Radial lead package — φ10×16 mm can with 5 mm lead spacing (±0.5 mm) for straightforward through-hole assembly; packaged in bulk or bag packing.
• RoHS compliant and production-ready — Compliant to RoHS and listed as mass production status.

Typical Applications

• Power supply smoothing: Bulk energy storage and output smoothing for linear and switching power supplies, leveraging 820 µF capacitance and low ESR.
• DC-DC converters: Input/output decoupling in converter stages where high-frequency ripple handling (up to 5.8 A at 300 kHz) and low ESR reduce voltage ripple and thermal stress.
• Industrial control electronics: Through-hole mounting for robust assemblies in motor drives, control boards, and instrumentation requiring wide temperature operation and long endurance at elevated temperature.

Unique Advantages

• High-frequency performance: 10 mΩ ESR at 100 kHz supports efficient operation in high-speed switching environments.
• Strong ripple tolerance: Rated ripple currents of 580 mA (120 Hz) and 5.8 A (300 kHz) enable reliable use on both low- and high-frequency rails.
• Wide temperature window: −55 °C to 105 °C operating range provides design margin across harsh thermal environments.
• Compact high-capacitance form factor: 820 µF in a φ10×16 mm radial can saves board space while delivering bulk capacitance for through-hole assemblies.
• Durability under load: 2000 hours rated life at 105 °C offers predictable long-term performance in elevated-temperature applications.
• Regulatory readiness: RoHS compliance supports environmental and regulatory requirements for many end products.

Why Choose RNL1E821MDS4?

The RNL1E821MDS4 positions itself as a reliable through-hole solution for designs that require substantial bulk capacitance, low ESR, and strong ripple-current capability in a compact can. Its combination of conductive polymer technology, 25 V rating, and proven endurance at 105 °C make it suitable for power supply smoothing and decoupling in industrial and general-purpose electronic equipment.

For engineers and procurement teams building or supporting high-frequency power stages, the RNL1E821MDS4 offers verifiable electrical characteristics and production readiness from a known series of conductive polymer aluminum capacitors.

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