RKS1E181MCNAJJGS

The RKS1E181MCNAJJGS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor with a rated capacitance of 180 µF and rated voltage of 25 V. It is part of the RKS series and is designed for general-purpose electronic applications that require low ESR and reliable high-temperature endurance.

This SMD capacitor delivers a combination of high capacitance in a compact φ10 × 10 mm can, low equivalent series resistance, measurable low-frequency and high-frequency ripple handling, and a long load life of 3000 hours at 125°C.

Key Features

• Capacitance & Tolerance — 180 µF nominal capacitance with tolerance specified as −20% to 20% at 20°C, 120 Hz.
• Rated Voltage & Polarization — 25 V rated voltage; polarized SMD aluminum electrolytic construction.
• Low ESR & High-Frequency Performance — ESR of 20 mΩ measured at 20°C / 100 kHz, supporting high-frequency ripple currents up to 2.0 A (specified at 300 kHz).
• Ripple Current Capability — Low-frequency ripple current rated at 200 mA (120 Hz) and high-frequency ripple current rated at 2000 mA (300 kHz), enabling effective smoothing across frequency ranges.
• Leakage & Dissipation — Specified leakage current of 225 µA and tangent of loss angle (tan δ) of 0.12 measured at 20°C, 120 Hz.
• High-Temperature Endurance — Load life specified as 3000 hours at 125°C under rated voltage conditions.
• Wide Operating Temperature — Rated for operation from −55°C to 125°C.
• Package & Mounting — Radial, can-style SMD package (φ10 × 10 mm) supplied in embossed carrier taping with moisture-proof packing for automated pick-and-place and reflow processing.
• Production Status — Mass production availability from Nichicon's RKS series.

Typical Applications

• Power supply modules — Bulk smoothing and decoupling where 180 µF at 25 V with low ESR improves regulator stability and transient response.
• DC-DC converters — Input/output filtering in compact power modules benefiting from the 2.0 A high-frequency ripple rating and 20 mΩ ESR.
• Industrial and embedded electronics — General-purpose energy storage and filtering in systems operating across −55°C to 125°C and requiring long endurance at elevated temperature.

Unique Advantages

• High capacitance in a compact SMD can — 180 µF in a φ10 × 10 mm package saves board space while providing substantial energy storage.
• Low ESR for improved efficiency — 20 mΩ ESR at 100 kHz reduces power loss and heat generation in high-frequency circuits.
• Broad ripple handling across frequencies — Rated ripple currents of 200 mA (120 Hz) and 2.0 A (300 kHz) support both low- and high-frequency filtering needs.
• Long high-temperature life — 3000 hours endurance at 125°C supports designs that must tolerate sustained elevated-temperature operation.
• SMD-ready packaging — Embossed carrier taping and moisture-proof packing simplify automated assembly and handling.
• RoHS compliance — The RKS series is stated as compliant to the RoHS directive (2011/65/EU, (EU)2015/863), supporting regulatory requirements for many applications.

Why Choose RKS1E181MCNAJJGS?

RKS1E181MCNAJJGS positions itself as a reliable, general-purpose SMD conductive polymer aluminum electrolytic capacitor for designs that require high capacitance, low ESR, measurable ripple capability, and long-term stability at elevated temperatures. The combination of 180 µF capacitance, 25 V rating, 20 mΩ ESR, and a 3000-hour life at 125°C makes it suitable for power management and filtering tasks in compact assemblies.

This part is suited to engineers and procurement teams building robust industrial, embedded, or power supply systems that need predictable electrical performance and SMD-compatible packaging for automated assembly. Backed by Nichicon’s RKS series specifications and mass-production availability, it provides a durable capacitor option for volume designs.

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