UPW2C331MRD

The UPW2C331MRD is a miniature, high-reliability aluminum electrolytic capacitor in a radial lead can, part of Nichicon's UPW series. It delivers 330 µF capacitance at a 160 V rating with a polarized radial-lead package designed for through-hole mounting.

Engineered for demanding power applications, this device targets switching power supplies and automotive electronic power circuits where compact size, elevated voltage tolerance, sustained ripple handling and long-term endurance are required.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a 160 V rated voltage and tolerance of −20% to +20% for stable energy storage on high-voltage rails.
• Low Loss / Low Impedance — tanδ (DF) 0.15 measured at 20°C, 120 Hz, supporting efficient filtering with reduced dissipation.
• High Ripple Current Handling — Low-frequency ripple current 900 mA at 120 Hz and high-frequency ripple current 1.035 A at 10 kHz, enabling robust performance under varying switching conditions.
• High Reliability & Endurance — Rated for 8,000 hours at 105°C, providing long-term stability in thermally stressed environments.
• AEC-Q200 Rating — Component-level qualification for higher reliability expectations in applications requiring established passive-component stress screening.
• Wide Operating Temperature Range — Specified for −40°C to +105°C operation to accommodate a broad set of environmental conditions.
• Radial Lead, Compact Can — Package dimensions φ20 × 40 mm with 10 mm lead spacing (±0.5 mm) for straightforward through-hole assembly and secure mechanical mounting.
• Leakage Current — Measured leakage current of 2212 µA to assist in design margin calculations for standby and leakage-sensitive circuits.
• Packaging Options — Supplied in bulk (no terminal forming) or bag packing to suit assembly and handling preferences.

Typical Applications

• Switching Power Supplies — Bulk filtering and smoothing in high-voltage switching regulators, leveraging low impedance and high ripple capability.
• Automotive Electronic Power Circuits — Energy storage and decoupling in automotive subsystems, supported by the AEC-Q200 rating and extended endurance at 105°C.
• High‑Voltage DC Filtering — Decoupling and ripple suppression on 160 V rails where compact, through-hole components are required.

Unique Advantages

• High-Voltage Capability: 160 V rating enables use on elevated DC rails without series stacking.
• Compact Footprint: φ20 × 40 mm can provides substantial capacitance in a small through-hole package for space-constrained designs.
• Validated Ripple Performance: Specified ripple currents at both low and high frequencies permit predictable thermal and lifetime planning across switching profiles.
• Long Endurance at Elevated Temperature: 8,000 hours at 105°C supports prolonged operation in thermally demanding applications.
• Automotive-Grade Qualification: AEC-Q200 rating signals suitability where enhanced passive component screening is required.
• Through-Hole Robustness: Radial lead format with defined lead spacing simplifies mechanical mounting and replacement in serviceable assemblies.

Why Choose UPW2C331MRD?

UPW2C331MRD combines a high-voltage rating with substantial capacitance and verified ripple capability in a compact radial-lead can, making it well suited for switching power supplies and automotive power electronics that demand reliable DC filtering. Its 8,000-hour endurance at 105°C and AEC-Q200 qualification provide predictable long-term performance in thermally and electrically stressed environments.

This part is a practical choice for engineers specifying through-hole electrolytics where compact size, elevated voltage handling, and endurance are key selection criteria. The clear electrical specifications and packaging options simplify integration and procurement for production and maintenance workflows.

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