UUN1H331MNJ1MS

The UUN1H331MNJ1MS is a chip‑type, bi‑polarized aluminum electrolytic capacitor from Nichicon's UUN series designed for surface mounting on high‑density PC boards. It delivers 330 µF capacitance at a 50 V rating in a compact SMD can package suitable for automated carrier‑tape mounting.

Engineered for general‑purpose electronic assemblies that require bipolar operation across a wide temperature range (−55°C to +105°C), this part targets designs needing higher capacitance in surface‑mount format with verified endurance at elevated temperatures.

Key Features

• Electrical Performance — 330 µF nominal capacitance with ±20% tolerance and a 50 V rated voltage for bulk energy storage or decoupling in bi‑polarized circuits.
• Bi‑Polarized Construction — Designed for bipolar operation, enabling use where polarity may reverse during operation.
• Temperature & Endurance — Rated for operation from −55°C to +105°C; endurance validated to 2000 hours at 105°C with polarity inversion per the UUN series specification.
• Ripple Current Capability — Specified ripple current of 540 mA at 120 Hz and 810 mA at 10 kHz, supporting applications with AC or high‑frequency ripple components.
• Surface‑Mount Chip Package — Radial can SMD (chip type) designed for high‑density PCBs and automatic carrier‑tape mounting; compact dimensions L: 2.15 cm × D: 1.8 cm with recommended land size 1.83 cm × 1.83 cm.
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General Purpose Electronics — Use where a bi‑polarized SMD capacitor is required for space‑constrained board layouts and general circuit functions.
• Surface‑Mount Assemblies — Suited to automated production lines and carrier‑tape fed placement on high‑density PCBs.
• Temperature‑Critical Designs — Applicable in systems that must operate reliably across −55°C to +105°C.

Unique Advantages

• High Capacitance in SMD Can — 330 µF in a chip‑type radial can provides bulk capacitance while preserving surface‑mount assembly workflows.
• Bipolar Operation — Eliminates polarity constraints where voltage reversal can occur, broadening circuit placement options.
• Validated High‑Temperature Endurance — Endurance rating of 2000 hours at 105°C with polarity inversion provides a clear reliability baseline for elevated‑temperature applications.
• Frequency‑Aware Ripple Ratings — Specified ripple currents at 120 Hz and 10 kHz (540 mA and 810 mA respectively) help match the capacitor to expected operating ripple conditions.
• Production‑Ready Mounting — Designed for carrier‑tape automated mounting, simplifying integration into high‑volume SMD assembly processes.
• Regulatory Compliance — RoHS conformity supports use in regulated markets requiring restricted substance compliance.

Why Choose UUN1H331MNJ1MS?

The UUN1H331MNJ1MS delivers a practical combination of 330 µF capacitance, bi‑polarized operation, and a 50 V rating in a surface‑mount can package designed for automated assembly. Its temperature range (−55°C to +105°C) and validated 2000‑hour endurance at 105°C make it suitable for designs that demand reliable performance under thermal stress.

Ideal for engineers and procurement teams specifying general‑purpose SMD electrolytic capacitors where higher capacitance, automated mounting compatibility, and verified ripple and temperature performance are required. Manufactured by Nichicon as part of the UUN series, this part offers clear, datasheet‑defined specifications for predictable design integration.

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