RNS0J391MDN1

The RNS0J391MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial lead can, offering 390 µF capacitance at a 6.3 V rating. It is built for general-purpose electronics where compact size, low ESR and high-frequency ripple handling are important.

Designed to operate from -55°C to 105°C with a rated endurance of 2000 hours at 105°C, this capacitor targets designs that require stable capacitance, low loss (tanδ) and reliable ripple-current performance in a small φ8×11.5 mm package.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance with a 6.3 V rated voltage and a tolerance of -20% to +20%.
• Low Equivalent Series Resistance (ESR): ESR specified at 10 mΩ (20°C/100 kHz), enabling reduced heat rise and improved AC performance.
• High Ripple-Current Capability: Low-frequency ripple current 523 mA (120 Hz) and high-frequency ripple current 5.23 A (300 kHz), supporting demanding decoupling and filtering at higher frequencies.
• Low Loss (tanδ): tanδ = 0.08 measured at 20°C, 120 Hz, indicating low dielectric loss for stable operation.
• Leakage Current: Specified leakage current of 368 µA (measured after 2 minutes at 20°C), useful for power-budget and standby considerations.
• Temperature & Endurance: Operating range -55°C to 105°C with a life/endurance rating of 2000 hours at 105°C under rated voltage.
• Package & Form Factor: Radial lead can, φ8×11.5 mm body size, 3.5 mm lead spacing (±0.5 mm), available in bulk or bag packing.

Typical Applications

• General-Purpose Electronics: Suited to circuits requiring a compact 390 µF, 6.3 V capacitor with stable performance across a wide temperature range.
• Power Filtering and Decoupling: Low ESR (10 mΩ at 100 kHz) and high ripple current capacity support bulk filtering and high-frequency decoupling in power modules and regulator outputs.
• High-Frequency Power Stages: The 5.23 A ripple rating at 300 kHz and low tanδ make this part applicable where high-frequency ripple handling and low loss are important.

Unique Advantages

• Compact, high-capacitance footprint: 390 µF in a φ8×11.5 mm can conserves board space while providing significant energy storage.
• Low ESR for improved thermal performance: 10 mΩ ESR at 100 kHz reduces I²R losses and helps control temperature rise under ripple load.
• Documented high-frequency ripple capability: Rated ripple current up to 5.23 A at 300 kHz supports modern switching regulator environments.
• Wide operating temperature and endurance: -55°C to 105°C range and 2000-hour endurance at 105°C give predictable long-term behavior in thermal stress conditions.
• Reliable leakage and loss characteristics: Leakage current of 368 µA and tanδ of 0.08 (20°C, 120 Hz) provide measurable parameters for power-budget and loss planning.
• Straightforward board integration: Radial lead package with 3.5 mm lead spacing and standard can dimensions eases assembly in through-hole designs.

Why Choose RNS0J391MDN1?

RNS0J391MDN1 combines a high-capacitance conductive polymer construction with low ESR and strong ripple-current capability in a compact radial-lead package. Its specified performance—10 mΩ ESR at 100 kHz, 5.23 A ripple at 300 kHz, tanδ 0.08 and a 2000-hour endurance at 105°C—makes it suitable for designs that require reliable energy storage and AC performance under thermal stress.

This capacitor is a practical choice for engineers and procurement teams working on general-purpose electronics and power-stage designs that demand measurable, verifiable electrical characteristics and a small board footprint.

If you would like a quote or need additional procurement information for RNS0J391MDN1, please submit a request and our team will respond with pricing, availability and packaging options.