RKS1E390MCNAHGGS

The RKS1E390MCNAHGGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor designed for high-frequency power applications. It delivers 39 µF at 25 V with low equivalent series resistance and high allowable ripple current in a compact φ8 × 7.7 mm SMD can package.

Engineered for demanding thermal environments, the part offers a wide operating temperature range from −55 °C to +125 °C and a rated load life of 3000 hours at 125 °C, making it suitable for systems that require stable capacitance and long-term reliability under elevated temperature conditions.

Key Features

• Capacitance & Voltage — 39 µF nominal capacitance with a rated voltage of 25 V and capacitance tolerance of −20% to +20% (measured at 20 °C, 120 Hz).
• Low ESR & High-Frequency Performance — ESR of 30 mΩ at 20 °C / 100 kHz supports high-frequency filtering and decoupling; specified high-frequency ripple current is 1.6 A at 300 kHz.
• Ripple Current Capability — Low-frequency ripple current rated at 160 mA (120 Hz) and high-frequency ripple current rated at 1600 mA, enabling effective smoothing in switching environments.
• Thermal Endurance — Rated operating temperature −55 °C to +125 °C with a load life specification of 3000 hours at 125 °C for stable long-term operation.
• Leakage & Loss Characteristics — Leakage current specified at 100 µA and tan δ (loss tangent) of 0.12 at 20 °C, 120 Hz for predictable electrical behavior under bias.
• SMD Can Package & Assembly — Compact φ8 × 7.7 mm SMD radial can (package case) supplied in embossed carrier taping with moisture-proof packing; compatible with lead-free reflow soldering profiles outlined in the datasheet.
• Compliance — RoHS compliant as specified in the product information.

Typical Applications

• Power supply filtering — Low ESR and high ripple-current capability make this capacitor suitable for smoothing and bulk decoupling in high-frequency power stages.
• DC–DC converter outputs — Stable capacitance and thermal endurance at elevated temperatures support output filtering and transient suppression near switching regulators.
• Industrial electronics — Wide temperature range and 3000 hour life at 125 °C provide reliable performance in industrial control and power systems that operate under thermal stress.
• Telecommunications and networking equipment — High-frequency ripple handling and compact SMD packaging are useful for power conditioning in comms and networking modules.

Unique Advantages

• High ripple tolerance: Specified 1.6 A high-frequency ripple current and 160 mA low-frequency ripple current enable effective use in switching-power environments and reduce thermal stress on the capacitor.
• Low ESR for high-frequency decoupling: 30 mΩ ESR at 100 kHz supports efficient high-frequency filtering and helps maintain voltage stability at fast transient loads.
• Robust thermal life: 3000 hours rated life at 125 °C offers extended service life in hot operating conditions, reducing maintenance and replacement frequency.
• Compact SMD can form factor: φ8 × 7.7 mm package delivered on embossed carrier tape simplifies automated placement while providing high capacitance in a small footprint.
• Predictable leakage and loss parameters: Leakage current specified at 100 µA and tan δ of 0.12 (20 °C, 120 Hz) provide repeatable behavior for precision designs.
• Assembly-ready: Designed for lead-free reflow soldering per the datasheet profile, supporting standard surface-mount manufacturing flows.

Why Choose RKS1E390MCNAHGGS?

RKS1E390MCNAHGGS combines conductive-polymer aluminum construction with low ESR and high ripple-current ratings to deliver reliable, compact energy storage and filtering for high-frequency power applications. Its wide operating temperature range and 3000 hour endurance at 125 °C make it a strong candidate for designs that demand thermal resilience and stable capacitance over time.

This capacitor is well suited to engineers seeking a small-footprint SMD solution for power supply filtering, DC–DC converter output stages, and other high-frequency decoupling tasks where predictable electrical parameters and long-term reliability are required.

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