RL81C221MDN1

The RL81C221MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a low-profile radial lead package (φ8×8 mm). It delivers low ESR and high ripple current capability for general-purpose electronic designs that require compact, stable bulk capacitance.

Designed for operation from −55°C to 105°C with a rated voltage of 16 V and a rated capacitance of 220 µF (±20%), this component targets applications where low impedance, high-frequency performance and long endurance are required.

Key Features

• Core Technology Conductive polymer aluminum solid electrolytic construction provides low loss and stable capacitance characteristics.
• Electrical Performance 220 µF capacitance at 16 V with ±20% tolerance; tanδ = 0.12 (20°C, 120 Hz) for predictable dissipation behavior.
• Ultra Low ESR ESR = 12 mΩ measured at 20°C/100 kHz, enabling low-impedance performance at high frequency.
• High Ripple Current Capability Low-frequency ripple current 500 mA (120 Hz) and high-frequency ripple current 5 A (300 kHz) for effective smoothing under dynamic loads.
• Thermal and Endurance Ratings Operating temperature range −55°C to 105°C with a rated endurance of 2000 hours at 105°C.
• Package and Mounting Radial lead, can-style case φ8×8 mm with 3.5 mm lead spacing (±0.5 mm). Available in bulk (no terminal forming) and bag packing; product is in mass production.
• Regulatory RoHS compliant.

Typical Applications

• General-Purpose Power Filtering Low ESR and high ripple capability make the RL81C221MDN1 suitable for bulk filtering and smoothing in power supplies and regulators.
• Decoupling for High-Frequency Circuits Low impedance at 100 kHz supports decoupling and stability in high-frequency power rails.
• Compact Embedded Systems The low-profile φ8×8 mm can and radial lead format fit space-constrained boards requiring reliable bulk capacitance.

Unique Advantages

• Low-impedance operation at high frequency: 12 mΩ ESR at 100 kHz reduces voltage ripple and improves transient response in high-speed circuits.
• High ripple tolerance across frequencies: Rated ripple current of 500 mA at 120 Hz and 5 A at 300 kHz supports both low- and high-frequency ripple environments.
• Durable under elevated temperature: 2000-hour endurance at 105°C provides predictable life behavior for thermal-stressed designs.
• Space-efficient form factor: φ8×8 mm low-profile can and 3.5 mm lead spacing enable compact layout on radial-leaded boards.
• Predictable leakage and dissipation: Specified leakage current (704 µA) and tanδ (0.12 at 20°C/120 Hz) help designers budget standby loss and thermal dissipation.
• RoHS compliant and production-ready: Mass production status and RoHS compliance simplify procurement and regulatory acceptance.

Why Choose RL81C221MDN1?

The RL81C221MDN1 balances low ESR, high ripple capability and a compact low-profile radial package to deliver reliable bulk capacitance in a variety of general-purpose electronic designs. Its conductive polymer construction and specified performance metrics provide designers with clear, verifiable parameters for power filtering and decoupling tasks.

This capacitor is well suited to engineers and procurement teams seeking a production-ready, RoHS-compliant component for compact power rails and embedded systems that require controlled leakage, predictable dissipation, and endurance at elevated temperatures.

Request a quote or contact sales with your quantity and delivery requirements to receive pricing and availability for RL81C221MDN1.