RL81C221MCN1

The RL81C221MCN1 is a conductive polymer aluminum solid electrolytic capacitor offering ultra low ESR and high ripple-current capability in a compact, low-profile radial lead package. Designed for general-purpose use, it delivers reliable performance across a wide temperature range and long load-life options.

This part is optimized for applications requiring low impedance at high frequency, compact board footprint (φ8×8 mm), and robust thermal endurance with specified load life at elevated temperature.

Key Features

• Core Technology — Conductive polymer aluminum solid electrolytic construction provides low ESR and stable performance.
• Electrical Specifications — 220 µF capacitance at 16 V rated voltage with ±20% tolerance (120 Hz, 20°C).
• Ultra Low ESR — 12 mΩ equivalent series resistance specified at 100 kHz, 20°C for low impedance at high frequencies.
• High Ripple Current Capability — Rated ripple current of 500 mA at 120 Hz and 5 A at 300 kHz (part-specific values as provided).
• Compact, Low-Profile Package — φ8 × 8 mm can with 8 mm overall height and 3.5 mm lead spacing in a radial-lead format.
• Wide Operating Temperature — Specified for −55°C to +105°C operation.
• Long Load Life — Load-life ratings of 2000 / 5000 hours at 105°C as specified in the product description.
• Solder and Environmental Compliance — Radial lead type compatible with lead-free flow soldering conditions and compliant to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General-purpose power circuits — Suited to general-purpose capacitor roles where low ESR and high ripple handling are required.
• Compact board designs — Low-profile φ8×8 package fits space-constrained layouts while preserving performance.
• High-temperature environments — Rated operating range to 105°C with specified load-life behavior for sustained elevated-temperature use.

Unique Advantages

• Low-impedance performance: 12 mΩ ESR at 100 kHz reduces AC impedance and supports demanding high-frequency ripple conditions.
• High-frequency ripple handling: 5 A capability at 300 kHz enables effective filtering in high-frequency power applications.
• Small footprint, high capability: φ8×8 mm can and radial leads provide a compact form factor without sacrificing ripple or lifetime performance.
• Robust thermal endurance: Rated for −55°C to +105°C and specified for 2000 / 5000 hours at 105°C, supporting long-term operation in warm environments.
• RoHS and lead-free solder compatibility: Compliant to RoHS and designed for lead-free flow soldering conditions to meet modern assembly requirements.

Why Choose RL81C221MCN1?

The RL81C221MCN1 combines conductive-polymer low-ESR performance with a compact radial-lead package, making it a strong candidate for designs that need high ripple capability and reliable operation at elevated temperatures. Its specified electrical parameters—220 µF at 16 V, 12 mΩ ESR at 100 kHz, and up to 5 A ripple at 300 kHz—provide verifiable metrics for engineers optimizing power filtering and decoupling in constrained spaces.

With RoHS compliance and compatibility with lead-free flow soldering, this capacitor is suitable for contemporary manufacturing processes and long-term deployments where thermal endurance and stable high-frequency behavior are required.

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