RKS1E390MCNAHJGS

The RKS1E390MCNAHJGS is a conductive-polymer aluminum solid electrolytic capacitor in a surface-mount radial-can package (φ8 × 10L) from Nichicon's RKS series. It delivers 39 µF capacitance at 25 V with a -20% to +20% tolerance and is optimized for general-purpose SMD applications.

Designed for demanding thermal and ripple environments, this part offers low ESR (27 mΩ at 20°C/100 kHz), high allowable ripple current (160 mA at 120 Hz and 1.6 A at 300 kHz), and a rated load life of 3000 hours at 125°C—making it suitable where long-term stability and compact SMD packaging are required.

Key Features

• Core Technology  Conductive-polymer aluminum solid electrolytic construction, specified in the RKS series for SMD high-allowable ripple applications.
• Capacitance & Tolerance  39 µF with tolerance of -20% to +20% (measured at 120 Hz, 20°C).
• Rated Voltage  25 V DC rating for a wide range of general-purpose power applications.
• Low Loss / Frequency Performance  tanδ (DF) = 0.12 specified at 20°C, 120 Hz for predictable AC behavior in decoupling tasks.
• Low ESR & High Ripple Capability  ESR = 27 mΩ (20°C/100 kHz). Ripple current specs: 160 mA at 120 Hz and 1.6 A at 300 kHz.
• Leakage Current Specification  Leakage current limited to 100 µA (after 2 minutes’ application of rated voltage, datasheet condition: ≤ 0.05CV or 100 µA, whichever is greater).
• Wide Temperature & Long Life  Operating range −55°C to +125°C with endurance specified as 3000 hours at 125°C under rated voltage.
• SMD Package & Tape Packaging  Radial can SMD (φ8 × 10L) supplied in embossed carrier taping and moisture-proof packing for automated assembly.
• Compliance & Production Status  RoHS compliant and listed as mass production.

Typical Applications

• General-purpose power decoupling  Use where compact SMD capacitors are needed to stabilize DC rails and reduce noise using the part’s low ESR and defined ripple ratings.
• High-temperature electronics  Suitable for designs that require stable capacitance and endurance up to 125°C, with a specified 3000-hour load life at that temperature.
• High-frequency bypassing  The 27 mΩ ESR at 100 kHz and 1.6 A ripple capability support high-frequency decoupling needs in compact layouts.

Unique Advantages

• Low ESR for tighter decoupling: The 27 mΩ ESR (20°C/100 kHz) helps minimize voltage drop and heat generation at high frequencies.
• High allowable ripple current: Rated ripple currents of 160 mA (120 Hz) and 1.6 A (300 kHz) support demanding AC stress without compromising performance.
• Extended high-temperature endurance: Specified 3000 hours life at 125°C gives long-term stability in elevated-temperature environments.
• Predictable leakage behavior: Leakage current limited to 100 µA (or 0.05CV, whichever is greater) under the datasheet conditioning, simplifying margin calculations for power budgets.
• Assembly-ready SMD packaging: φ8 × 10L radial-can SMD format with embossed carrier taping and moisture-proof packing supports automated placement and reflow processing.

Why Choose RKS1E390MCNAHJGS?

RKS1E390MCNAHJGS positions itself as a robust, general-purpose SMD capacitor for engineers needing a compact, low-ESR solution with verified high-frequency ripple capability and long life at elevated temperatures. Its conductive-polymer aluminum construction and specified electrical characteristics provide a predictable component choice for power decoupling, smoothing, and high-frequency bypass tasks in space-constrained boards.

This part is ideal for designs where sustained performance at up to 125°C, controlled leakage, and reliable automated assembly are required. With RoHS compliance and mass-production availability, it supports scalable manufacturing and long-term BOM stability.

If you would like pricing, lead-time information or a formal quotation for RKS1E390MCNAHJGS, please request a quote or contact our sales team to submit an inquiry.