RKS1J390MCNAHGGS

The RKS1J390MCNAHGGS is a surface-mount conductive polymer aluminum electrolytic capacitor from Nichicon's RKS series. It provides 39 µF capacitance at a 63 V rating in a compact φ8 × 7.7 mm can-style SMD package optimized for automated assembly.

Engineered for power-focused designs that require low ESR, elevated ripple handling and long-term high-temperature endurance, this part targets applications where stable filtering and decoupling under thermal stress are important.

Key Features

• Electrical performance — 39 µF capacitance with ±20% tolerance; rated voltage 63 V; tanδ (DF) 0.12 measured at 20°C, 120 Hz.
• Low ESR & high-frequency capability — ESR of 40 mΩ measured at 20°C/100 kHz supports high-frequency decoupling and minimizes losses at switching frequencies.
• High allowable ripple current — Low-frequency ripple current 110 mA (120 Hz) and high-frequency ripple current 1.1 A (300 kHz) for demanding power stages.
• Long high-temperature life — Endurance of 3000 hours at 125°C under rated voltage for extended reliability in elevated-temperature environments.
• Wide operating temperature — Specified for −55°C to +125°C operation to cover a broad range of thermal conditions.
• Surface-mount package & assembly — Radial can SMD (φ8 × 7.7 mm) with recommended land size 8.3 × 8.3 mm; supplied in embossed carrier taping with moisture-proof packing and compatible with lead-free reflow soldering (260°C peak).
• Leakage current — Specified leakage current of 122 µA after standard conditioning.
• RoHS compliant — Conforms to RoHS requirements.

Unique Advantages

• Stable high-temperature endurance: 3000 hours at 125°C provides predictable capacitance and ESR behavior for long-term operation under thermal stress.
• Low-loss, high-frequency performance: 40 mΩ ESR at 100 kHz and tanδ of 0.12 (120 Hz) help maintain efficiency in switching and high-speed circuits.
• Robust ripple handling: Combined low- and high-frequency ripple specs (110 mA @120 Hz, 1.1 A @300 kHz) enable use in both bulk filtering and high-frequency decoupling roles.
• SMD-ready packaging: Compact φ8 × 7.7 mm can, embossed carrier taping and moisture-proof packing simplify pick-and-place and reflow assembly processes.
• Designed for reliable production: Specified leakage current and clear endurance criteria support predictable BOM and lifecycle planning.
• Regulatory alignment: RoHS compliance supports use in environmentally regulated products.

Why Choose RKS1J390MCNAHGGS?

RKS1J390MCNAHGGS combines conductive-polymer aluminum capacitor performance with a compact SMD can package to deliver low ESR, strong ripple capability and proven endurance at elevated temperatures. Its specifications—39 µF at 63 V, 40 mΩ ESR (100 kHz), 1.1 A high-frequency ripple rating and 3000-hour life at 125°C—make it well suited for power supply smoothing, switching regulator decoupling and other power-management roles where thermal robustness and low loss matter.

Manufactured by Nichicon and supplied in production-friendly embossed carrier taping with moisture-proof packing, this part supports automated assembly and predictable long-term behavior, offering engineers a reliable option for demanding power designs.

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