UUN1H221MNJ1MS

The Nichicon UUN1H221MNJ1MS is a bi‑polarized aluminum electrolytic capacitor in a surface‑mount chip-style can designed for general‑purpose electronic assemblies. It delivers 220 µF capacitance at a 50 V rating with a compact φ18 × 16.5L package and is supplied on embossed carrier taping for automated production.

Engineered for applications that require AC‑capable capacitance, wide operating temperature range and reliable endurance, this part combines higher capacitance in an SMD form factor with specifications targeted at power, analog and signal applications in industrial and commercial equipment.

Key Features

• Capacitance & tolerance — 220 µF nominal with ±20% tolerance (measured at 120 Hz, 20 °C), suitable where stable bulk capacitance is required.
• Rated voltage & bipolar construction — 50 V rated, bi‑polarized design enables use in AC‑coupled and bipolar signal circuits without polarity constraints.
• Loss characteristics — tanδ = 0.12 (maximum) measured at 20 °C, 120 Hz, supporting predictable ESR/impedance behavior in design calculations.
• Ripple current capability — 400 mA at 120 Hz (low frequency) and 600 mA at 10 kHz (high frequency) for effective smoothing across frequency ranges.
• Leakage current — Specified leakage current of 330 µA, allowing engineers to budget for standby and bias currents.
• Thermal and endurance performance — Operating range −55 °C to +105 °C with a rated endurance of 2000 hours at 105 °C (polarities inverted every 250 hours per endurance test procedure).
• Surface‑mount, tape‑and‑reel ready — Radial can SMD package supplied in embossed carrier taping for automated placement and high‑density PCB assembly.
• RoHS compliant — Meets RoHS directive requirements for environmental compliance.

Typical Applications

• Power supply decoupling and smoothing — Bulk capacitance and specified ripple currents make this capacitor suitable for filtering and smoothing in compact switched or linear supplies.
• AC‑coupling and bipolar signal paths — Bi‑polarized construction accommodates AC and bipolar signal circuits where polarity reversal may occur.
• Industrial and commercial control electronics — Wide −55 °C to +105 °C operating range and 2000‑hour endurance at 105 °C support extended operation in demanding ambient conditions.
• High‑density surface‑mount assemblies — Chip‑type can package and embossed carrier taping enable automated placement in compact PCB layouts.

Unique Advantages

• High capacitance in an SMD can — 220 µF in a φ18 chip style enables significant bulk capacitance without through‑hole components.
• Bipolar construction simplifies design — Eliminates need for series polarity arrangements in AC or polarity‑switching circuits, reducing BOM complexity.
• Broad ripple performance — Specified ripple current ratings at both low and high frequencies allow designers to account for filtering across common noise spectra.
• Durability at elevated temperature — 2000 hours endurance at 105 °C with polarity inversion testing gives confidence in life performance under thermal stress.
• Pick‑and‑place friendly packaging — Embossed carrier taping supports automated manufacturing and consistent placement for high-volume production.
• RoHS compliance — Conforms to environmental directive requirements for restricted substances.

Why Choose UUN1H221MNJ1MS?

The UUN1H221MNJ1MS delivers a combination of bi‑polarized functionality, substantial capacitance and surface‑mount convenience for designers needing reliable AC‑capable bulk capacitance in compact assemblies. With specified ripple current performance across low and high frequencies, predictable loss characteristics and a wide −55 °C to +105 °C operating range, it suits general‑purpose power and signal applications in industrial and commercial equipment.

Mass production availability and embossed carrier taping streamline procurement and assembly for volume manufacturing, while Nichicon’s UUN series specifications provide clear endurance and leakage targets useful for long‑term design planning.

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