RKS1D121MCNAHJGS

The RKS1D121MCNAHJGS is a surface-mount conductive polymer aluminum electrolytic capacitor in Nichicon's RKS series, offering 120 µF capacitance at a 20 V rating. Designed for general-purpose power and decoupling tasks, it combines high allowable ripple current and low ESR to support high-frequency and high-ripple applications.

Key value propositions include a wide operating temperature range of −55°C to 125°C, a rated lifetime of 3000 hours at 125°C, and RoHS compliance, making it suitable for demanding board-level power designs where stability, reliability, and compact SMD packaging are required.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a rated voltage of 20 V and a tolerance of −20% to +20%, providing predictable bulk capacitance for a variety of power circuits.
• Low ESR & High-Frequency Performance — ESR of 25 mΩ measured at 20°C/100 kHz and a tanδ of 0.12 (20°C, 120 Hz), delivering low loss and effective high-frequency decoupling.
• High Allowable Ripple Current — Low-frequency ripple current of 170 mA (120 Hz) and high-frequency ripple current of 1.7 A (300 kHz), supporting circuits with significant AC stress and switching ripple.
• Extended Temperature & Life — Operating range from −55°C to 125°C and a rated life of 3000 hours at 125°C, specified for sustained elevated-temperature operation.
• Leakage & Reliability — Leakage current specified at 120 µA and endurance performance defined by datasheet conditions (capacitance, tanδ, ESR limits after endurance tests), enabling reliable long-term operation when used within ratings.
• SMD Packaging & Handling — Radial can SMD package (φ8 × 10 mm) supplied in embossed carrier taping with moisture-proof packing for automated pick-and-place assembly and storage.
• Standards & Compliance — Conductive polymer aluminum solid electrolytic construction with RoHS compliance as specified in the product data.

Typical Applications

• Power Supply Filtering — Bulk and output filtering for board-level switching regulators and linear supplies where low ESR and stable capacitance are required.
• High-Frequency Decoupling — Decoupling at switching nodes and high-speed power rails leveraging low ESR and high-frequency ripple current capability.
• Industrial Electronics — Power conditioning in industrial control and instrumentation equipment operating across a wide temperature range up to 125°C.
• Telecom & Communications — Local energy storage and smoothing at supply points subject to high ripple currents and fast transient loads.

Unique Advantages

• Low ESR for improved efficiency: 25 mΩ ESR at 100 kHz reduces power loss and heat generation in high-frequency circuits.
• High ripple handling: 1.7 A high-frequency ripple rating supports switching regulators and converters with significant AC ripple.
• Wide temperature range and long life: −55°C to 125°C operation and 3000 hours life at 125°C support designs exposed to elevated temperatures and extended duty.
• SMD-ready packaging: Embossed carrier taping and moisture-proof packing streamline automated assembly and inventory control.
• Predictable leakage and loss characteristics: Specified leakage current (120 µA) and tanδ (0.12) make it straightforward to budget standby currents and dissipation in designs.
• RoHS compliant: Meets environmental compliance requirements specified in the product data.

Why Choose RKS1D121MCNAHJGS?

RKS1D121MCNAHJGS positions itself as a reliable SMD conductive polymer aluminum electrolytic capacitor for engineers needing stable bulk capacitance, low ESR, and strong ripple-current capability in a compact radial-can SMD form. Its combination of high-frequency performance, wide operating temperature, and defined endurance at 125°C makes it well suited to power supply filtering and decoupling in industrial, communication, and general-purpose electronic systems.

For designs that require predictable electrical characteristics and assembly-friendly packaging, this part offers a balance of performance and manufacturability backed by Nichicon's RKS series specifications and RoHS compliance.

Request a quote or contact sales to discuss availability, pricing, or to arrange samples of RKS1D121MCNAHJGS for evaluation in your design.