RKS1C391MCNAHGGS

The RKS1C391MCNAHGGS is a surface-mount conductive-polymer aluminum solid electrolytic capacitor offering 390 µF at a 16 V rating in a compact SMD can (φ8 × 7.7 mm). Designed for general-purpose power applications, it combines high capacitance with low ESR and elevated ripple-current capability for demanding board-level decoupling and bulk energy storage.

Built for reliable operation across a wide temperature range (−55 °C to 125 °C) and a rated endurance of 3000 hours at 125 °C, this part is targeted at applications that require compact, durable SMD capacitance with robust ripple handling.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance at a 16 V rated voltage, with tolerance −20% to +20% for predictable decoupling and bulk smoothing.
• Low ESR & High-Frequency Performance: ESR of 30 mΩ measured at 20 °C/100 kHz helps minimize loss and voltage drop under high-frequency switching conditions.
• High Ripple Current Capability: Rated for 160 mA at 120 Hz (low frequency) and 1.6 A at 300 kHz (high frequency), supporting demanding switching regulator loads and transient currents.
• Loss Characteristics: Tangent of loss angle (tanδ) of 0.12 measured at 20 °C/120 Hz for stable AC behavior in filter and decoupling circuits.
• Leakage Current: Specified leakage current of 312 µA, suitable for many power management designs where controlled leakage is required.
• Thermal & Lifetime Reliability: Operating temperature range −55 °C to 125 °C and rated life of 3000 hours at 125 °C, enabling sustained operation in elevated-temperature environments.
• SMD Can Package & Tape Packaging: Radial can SMD package (φ8 × 7.7 mm) supplied in embossed carrier taping with moisture-proof packing for automated assembly and handling.
• Regulatory: RoHS compliant for environmentally conscious designs.

Typical Applications

• Power Supply Decoupling and Bulk Smoothing: Low ESR and high ripple-current capability help reduce voltage ripple and support transient loads on power rails.
• DC–DC Converter Output Filtering: High-frequency ripple current rating and low ESR suit switching regulator output stages for improved regulation and efficiency.
• Embedded and Compact Systems: High capacitance in a small φ8 × 7.7 mm SMD can makes it useful where board space is constrained but energy storage is required.

Unique Advantages

• High Ripple Handling: 1.6 A high-frequency ripple current rating enables use with modern switching regulators and high-switching-frequency supplies.
• Low Losses at High Frequency: 30 mΩ ESR at 100 kHz and tanδ of 0.12 at 120 Hz reduce dissipation and improve performance in AC and switching environments.
• Compact High-Capacitance Footprint: 390 µF in a φ8 × 7.7 mm SMD can delivers bulk energy storage without large board-area penalties.
• Extended Thermal Endurance: Rated for 3000 hours at 125 °C and an operating range from −55 °C to 125 °C, supporting designs exposed to sustained elevated temperatures.
• Assembly-Ready Packaging: Supplied in embossed carrier taping with moisture-proof packing to streamline pick-and-place and reflow processing.
• Regulatory Compliance: RoHS compliance supports environmental and supply-chain requirements.

Why Choose RKS1C391MCNAHGGS?

RKS1C391MCNAHGGS positions itself where high capacitance, low ESR, and strong ripple-current capability are required in a small SMD can. Its combination of 390 µF at 16 V, 30 mΩ ESR at 100 kHz, and a 1.6 A high-frequency ripple rating makes it suitable for power designers seeking compact, reliable bulk and decoupling solutions.

This part is well suited to engineers designing thermal-stressed or space-constrained power systems that demand sustained performance: the 3000-hour life at 125 °C and wide operating temperature range deliver predictable long-term behavior in production environments.

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