UUN1E331MNJ1MS

The UUN1E331MNJ1MS is a chip‑type, bi‑polarized aluminum electrolytic capacitor designed for surface mounting on high‑density printed circuit boards. It delivers 330 µF capacitance at a 25 V rating in a compact SMD can package suitable for general purpose electronic applications.

Built for wide ambient operation and endurance, this part is intended for designers needing higher capacitance in a surface‑mount form factor with bi‑polar operation and RoHS compliance.

Key Features

• Package & Mounting Chip‑type, radial can SMD package designed for surface mounting on high‑density PCBs and compatible with carrier‑tape automated placement.
• Capacitance & Voltage 330 µF rated capacitance with a 25 V rated voltage, offering higher capacitance in compact chip form for bulk and decoupling applications.
• Bi‑Polar Polarization Bi‑polarized construction enables operation without conventional polarity constraints in AC or bipolar circuits.
• Temperature Range Specified for operation from −55 °C to +105 °C, supporting designs exposed to wide ambient temperatures.
• Endurance Rated for 2000 hours at 105 °C with polarity inversion every 250 hours (endurance condition from the series datasheet), supporting long‑term reliability under elevated temperature stress.
• Ripple Current Rated ripple current of 370 mA at 120 Hz and 555 mA at 10 kHz for the 330 µF value, with frequency coefficients provided by the series to size for application frequency.
• Tolerance & Loss Capacitance tolerance ±20% at 120 Hz, 20 °C; series tan δ limits include 0.16 max at 25 V (measured at 120 Hz, 20 °C).
• Leakage Current Series leakage specification: after 1 minute at rated voltage and 20 °C, leakage is not more than 0.03CV (µA), useful for estimating standby loss.
• RoHS Compliant Compliant with RoHS directive (2011/65/EU, (EU)2015/863), meeting common environmental regulations for electronics assemblies.

Typical Applications

• General purpose electronic equipment — Bulk capacitance and decoupling in compact, high‑density PCB assemblies where surface‑mount chip capacitors are required.
• Bipolar/AC signal circuits — Circuits that require non‑polar or bi‑polar capacitor behavior benefit from the bi‑polarized construction.
• Power supply smoothing — Bulk energy storage and ripple filtering for localized power rails in consumer and industrial modules within the stated temperature range.

Unique Advantages

• High capacitance in SMD package: 330 µF in a chip can provides bulk capacitance without a larger radial through‑hole footprint, enabling denser PCB layouts.
• Bi‑polar operation: Eliminates polarity restrictions for AC‑coupled or bipolar circuits, simplifying circuit topology where non‑polar behavior is needed.
• Wide operating temperature: Rated from −55 °C to +105 °C for use across broad environmental conditions.
• Endurance at elevated temperature: 2000 hours at 105 °C (with polarity inversion per series endurance test) supports long‑term reliability in thermally stressed designs.
• Frequency‑aware ripple ratings: Published ripple current values (370 mA at 120 Hz, 555 mA at 10 kHz) and series frequency coefficients allow designers to match ripple capability to application frequency.
• Manufactured by Nichicon: Backed by series datasheet specifications for capacitance tolerance, tan δ, and leakage current to aid engineering validation.

Why Choose UUN1E331MNJ1MS?

UUN1E331MNJ1MS positions itself as a practical choice for engineers needing higher capacitance in a surface‑mount, bi‑polarized aluminum electrolytic format. Its combination of 330 µF capacitance, 25 V rating, broad −55 °C to +105 °C operating range, and 2000‑hour endurance at 105 °C makes it well suited for general purpose electronics and dense PCB power management tasks.

Designed for automated assembly and complying with RoHS, this part delivers a clear specification set for procurement and design validation, helping teams balance board space, thermal requirements, and ripple current needs.

Request a quote or submit an inquiry to receive pricing and availability details for UUN1E331MNJ1MS. Our team can provide part lead times and support for volume or prototype orders.