RKS1K390MCNAJLGS

The RKS1K390MCNAJLGS is a conductive polymer aluminum solid electrolytic surface-mount capacitor designed for general-purpose power and decoupling applications. With a 39 µF capacitance at an 80 V rating and a compact φ10 × 12.4 mm can-style SMD package, it targets designs that require high capacitance density, low equivalent series resistance, and reliable performance across a wide temperature range.

Engineered for sustained operation up to 125°C and a rated endurance of 3000 hours at 125°C, this part delivers stable capacitance, controlled dissipation factor, and high allowable ripple current for demanding thermal and frequency environments.

Key Features

• Dielectric / Construction – Conductive polymer aluminum solid electrolytic capacitor offering solid-electrolyte performance in an SMD radial can package.
• Capacitance & Tolerance – 39 µF with ±20% tolerance at 20°C, 120 Hz, suitable for bulk decoupling and energy storage in power subsystems.
• Voltage Rating – 80 V rated voltage for higher-voltage rail applications.
• Low ESR – 30 mΩ ESR measured at 20°C, 100 kHz, enabling lower loss and improved ripple performance at high frequencies.
• High Ripple Current Capability – 140 mA at 120 Hz (low frequency) and 1.4 A at 300 kHz (high frequency) for AC ripple handling across a broad frequency range.
• Thermal & Endurance – Operating range −55°C to +125°C with a rated life of 3000 hours at 125°C for high-temperature reliability.
• Leakage & Dissipation – Specified leakage current of 156 µA and tangent of loss angle (tan δ) of 0.12 at 20°C, 120 Hz for predictable loss characteristics.
• Assembly Compatibility – SMD type compatible with lead-free reflow processes up to a 260°C peak as noted in the product materials.
• Packaging & Compliance – Supplied in embossed carrier tape with moisture-proof packing; RoHS compliant and in mass-production status.

Typical Applications

• Power Supply Decoupling – Bulk and high-frequency decoupling on power rails where 80 V rating and low ESR help stabilize converters and regulators.
• DC–DC Converters – Output filtering and energy storage in high-frequency switching converters that require elevated ripple-current capability and compact SMD packaging.
• Industrial Electronics – Power conditioning in industrial control modules and instrumentation that operate across −55°C to 125°C.
• Communications Equipment – Smoothing and local energy buffering in RF and high-speed digital systems leveraging the capacitor’s low ESR at high frequency.

Unique Advantages

• High-temperature endurance: Rated for 3000 hours at 125°C, providing predictable long-term behavior in thermally demanding environments.
• Broad ripple-current capability: 1.4 A at 300 kHz and 140 mA at 120 Hz support both high-frequency smoothing and low-frequency ripple handling without parallelization.
• Low loss at high frequency: 30 mΩ ESR at 100 kHz and tan δ of 0.12 at 120 Hz reduce dissipation and heat generation in power circuits.
• High-voltage SMD option: 80 V rating in a compact φ10 × 12.4 mm SMD can enables higher-voltage designs while maintaining a small board footprint.
• Assembly-ready packaging: Embossed carrier taping with moisture-proof packing supports automated placement and standard lead‑free reflow processes up to 260°C peak (per product material guidance).
• Regulatory compliance: RoHS compliance for environmental requirements in commercial and industrial applications.

Why Choose RKS1K390MCNAJLGS?

RKS1K390MCNAJLGS combines conductive polymer aluminum solid electrolyte construction with a high voltage rating and low ESR to deliver stable capacitance and efficient ripple handling across a wide temperature range. Its 3000-hour endurance at 125°C and packaged support for lead-free reflow make it a robust choice for designs that demand long-term thermal reliability and automated assembly.

This capacitor is well suited for engineers specifying power-stage decoupling, DC–DC output filtering, and industrial electronics where compact SMD form, high allowable ripple current, and verified loss characteristics are important for system performance and reliability.

If you would like pricing, availability, or a formal quote for RKS1K390MCNAJLGS, request a quote or submit an inquiry to our sales support team and include your required quantities and delivery timeline.