RKS1J390MCNAHHGS

The RKS1J390MCNAHHGS is a surface-mount conductive polymer aluminum electrolytic capacitor designed for applications that require low ESR, high allowable ripple current and extended high-temperature endurance. With a rated capacitance of 39 µF and a 63 V voltage rating, it delivers stable performance across a wide operating temperature range.

Built for demanding power-electronics environments, this SMD can withstand 3000 hours at 125°C, supports lead‑free reflow up to 260°C peak, and offers low-loss characteristics for high-frequency ripple handling and decoupling tasks.

Key Features

• Dielectric / Type Conductive polymer aluminum solid electrolyte—provides low ESR and stable high-frequency behavior.
• Capacitance & Voltage 39 µF rated capacitance with ±20% tolerance at 120 Hz, 20°C, and a 63 V rated voltage.
• Low Loss / High-Frequency Performance tanδ = 0.12 (20°C, 120 Hz) and ESR = 40 mΩ (20°C, 100 kHz) for efficient ripple suppression and decoupling.
• Ripple Current Capability Low-frequency ripple current 110 mA (120 Hz) and high-frequency ripple current 1.1 A (300 kHz) for robust power handling.
• Leakage Current Specified leakage current of 122 µA after rated-voltage application.
• High-Temperature Endurance Rated for 3000 hours at 125°C to support designs requiring long life in elevated temperatures.
• SMD Package & Reflow Compatibility φ8 × 8.7 mm can-style SMD package, radial can footprint with surface mount land size 8.3 × 8.3 mm; compatible with lead‑free reflow up to 260°C (peak).
• Polarized Designed for polarized applications common to electrolytic architectures.

Typical Applications

• Power supply output filtering: Use for output decoupling where low ESR (40 mΩ) and 1.1 A high-frequency ripple capability improve voltage stability under dynamic loads.
• Switch-mode power modules: Suitable for local energy storage and ripple suppression in compact SMPS stages operating at high switching frequencies.
• High-temperature electronics: Ideal for systems requiring long-term operation at elevated ambient temperatures—specified for 3000 hours at 125°C.

Unique Advantages

• Low ESR for efficient filtering: 40 mΩ ESR at 100 kHz reduces power loss and heat generation in high-frequency circuits.
• High-frequency ripple handling: 1.1 A ripple current at 300 kHz supports aggressive switching topologies and fast transient loads.
• Extended high-temperature life: 3000-hour endurance at 125°C provides predictable aging and reliability in thermal-stressed designs.
• Reflow-ready SMD can: φ8 × 8.7 mm SMD package qualified for lead‑free reflow to 260°C, simplifying automated assembly and handling.
• Stable electrical characteristics: tanδ = 0.12 and ±20% capacitance tolerance deliver consistent performance for frequency-dependent decoupling tasks.
• Practical packaging: Available in embossed carrier taping with moisture-proof packing to support volume SMT production.

Why Choose RKS1J390MCNAHHGS?

RKS1J390MCNAHHGS combines conductive-polymer low-ESR performance with robust thermal endurance and reflow compatibility, making it well suited for power-dense SMD designs that demand reliable ripple suppression and long life at elevated temperatures. Its electrical specifications—39 µF at 63 V, low tanδ, and explicit ripple current ratings—allow engineers to design predictable power stages with reduced thermal margining.

This part is a practical choice for engineers and procurement teams working on compact power modules, high-frequency converters, and other systems where low loss, long-term reliability at up to 125°C, and SMT assembly are priorities.

Request a quote or submit an RFQ for RKS1J390MCNAHHGS to receive pricing, availability, and lead-time information tailored to your production needs.