UUN1C331MNJ1MS

The UUN1C331MNJ1MS is a chip‑type, bi‑polarized aluminum electrolytic capacitor in Nichicon’s UUN series, delivering 330 µF at 16 V in a compact surface‑mount package. It is designed for general‑purpose use on high‑density printed circuit boards and for automated assembly with carrier tape.

Key value propositions include a higher capacitance chip form factor for space‑constrained SMD layouts, a wide operating temperature range (‑55 °C to +105 °C), long endurance at elevated temperature, and RoHS compliance.

Key Features

• Core Type – Bi‑Polarized Chip: Chip‑type, bi‑polarized construction as specified in the UUN series for designs that require bipolar capacitor characteristics.
• Capacitance & Voltage: Rated at 330 µF and 16 V with a capacitance tolerance of ±20% (120 Hz, 20 °C).
• Temperature Range: Specified operating temperature from ‑55 °C to +105 °C for wide‑range environmental performance.
• Endurance: Rated for 2000 hours at 105 °C with polarity inverted every 250 hours (endurance conditions per series specification).
• Ripple Current: Rated ripple current 310 mA at 120 Hz and 465 mA at 10 kHz for the 330 µF / 16 V configuration (series frequency coefficients apply).
• Leakage Current Specified: After 1 minute's application of rated voltage at 20 °C, leakage current is not more than 0.03 × C × V (µA), per series datasheet.
• Electrical Losses & Low‑Temp Stability: Specified tan δ (max.) of 0.18 at 16 V (measurement at 120 Hz, 20 °C) and defined impedance ratios for low‑temperature performance in the datasheet.
• Package & Mounting: Surface‑mount radial can (SMD) designed for high‑density PCBs; nominal size L: 1.35 × D: 1.25 cm with recommended surface mount land size L: 1.28 × W: 1.28 cm. Compatible with automatic mounting machines fed by carrier tape.
• Environmental Compliance: RoHS directive compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General Purpose Electronics: Suitable where a bi‑polarized SMD electrolytic capacitor is required for general‑purpose circuit functions on populated PCBs.
• High‑Density PCB Assemblies: Chip form factor and carrier‑tape compatibility make it a fit for dense, automated assembly workflows.
• Wide‑Temperature Systems: Intended for designs that must operate reliably from ‑55 °C up to +105 °C, per the series specification.

Unique Advantages

• Higher Capacitance in SMD Form: 330 µF delivered in a chip‑type package provides greater capacitance density for space‑limited layouts.
• Bi‑Polarized Design: Specified as a bi‑polarized series, simplifying integration where bipolar capacitor characteristics are required.
• Wide Operating Temperature: Rated for ‑55 °C to +105 °C, supporting applications with broad ambient temperature requirements.
• Long Elevated‑Temperature Endurance: 2000 hours at 105 °C endurance rating provides design confidence for sustained high‑temperature use.
• Assembly‑Friendly Packaging: Surface‑mount radial can format with carrier‑tape compatibility eases automated placement on high‑density boards.
• RoHS Compliance: Conforms to RoHS directive requirements for regulated materials.

Why Choose UUN1C331MNJ1MS?

UUN1C331MNJ1MS combines a higher‑capacitance chip form factor with bi‑polarized construction and a wide operating temperature span, making it a practical choice for engineers specifying general‑purpose SMD aluminum electrolytics for dense PCB layouts and automated assembly. Its electrical characteristics and endurance ratings are defined in the Nichicon UUN series specifications, supporting predictable performance in design.

This part is well suited to designers and procurement teams seeking a RoHS‑compliant, surface‑mount electrolytic capacitor with specified ripple current performance, leakage current limits, and long‑term elevated‑temperature endurance for robust, repeatable deployment.

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