RKS1E390MCNAHHGS

The RKS1E390MCNAHHGS is a surface-mount conductive polymer aluminum electrolytic capacitor offering 39 µF capacitance at a 25 V rating. It combines high allowable ripple current and low equivalent series resistance (ESR) in a compact SMD can package suitable for demanding thermal and high-frequency environments.

Designed for engineers working on power-dense and high-frequency circuits, this capacitor delivers reliable decoupling and bulk filtering performance with a rated operating range of −55°C to 125°C and a load life of 3000 hours at 125°C.

Key Features

• Electrical Performance — 39 µF nominal capacitance with ±20% tolerance and a tanδ (DF) of 0.12 measured at 20°C, 120 Hz, providing predictable AC behavior for decoupling and filtering.
• Low ESR & High Ripple Capability — ESR of 30 mΩ at 20°C/100 kHz and high-frequency ripple current rating of 1.6 A at 300 kHz (160 mA at 120 Hz), enabling efficient handling of switching noise and fast transient currents.
• Thermal and Endurance — Rated for −55°C to 125°C with a specified life of 3000 hours at 125°C, supporting designs that require extended high-temperature reliability.
• SMD Can Package — Radial can, surface-mount package with dimensions φ8 × 8.7 mm (L × D) and recommended land size 8.3 × 8.3 mm for PCB layout and automated assembly.
• Leakage and Tolerance Control — Leakage current specified at 100 µA and capacitance tolerance of −20% to +20%, suitable for predictable hold and bias conditions in power circuits.
• Assembly & Handling — Supplied in embossed carrier taping with moisture-proof packing and compatible with reflow soldering (peak 260°C), supporting standard SMT production flows.
• Compliance — RoHS compliant as specified in product data.

Typical Applications

• Power supply filtering — Bulk and output smoothing in switching power supplies where low ESR and high ripple current improve regulator stability and efficiency.
• DC-DC converters — Decoupling and energy buffering for high-frequency converters that require low-loss capacitors with high allowable ripple current.
• Industrial electronics — Power conditioning and filtering in equipment exposed to elevated operating temperatures up to 125°C.

Unique Advantages

• High ripple handling: 1.6 A high-frequency ripple rating and low ESR (30 mΩ) reduce heat generation and voltage ripple under switching loads.
• High-temperature endurance: 3000-hour life at 125°C provides predictable longevity in thermally stressed designs.
• SMD-ready packaging: Embossed carrier taping and moisture-proof packing enable automated placement and standard reflow assembly (peak 260°C).
• Compact footprint: φ8 × 8.7 mm can fits space-constrained power boards while delivering substantial capacitance for bulk and decoupling needs.
• Manufacturer reliability: Built to Nichicon’s conductive polymer aluminum electrolytic specifications for consistency across assemblies.

Why Choose RKS1E390MCNAHHGS?

RKS1E390MCNAHHGS positions itself as a reliable SMD conductive polymer aluminum capacitor for power-dense designs that demand low ESR, high ripple capability, and extended high-temperature life. Its combination of 39 µF at 25 V, low loss characteristics, and a 3000-hour rating at 125°C make it well suited to engineers optimizing power supply stability and thermal reliability.

This part is ideal for OEMs and design teams focused on compact power modules, DC-DC converters, and industrial electronics where predictable performance over temperature and robust SMT assembly are priorities.

Request a quote or submit a parts inquiry to obtain pricing, availability, and delivery details for RKS1E390MCNAHHGS from our sales team.