UPT2G331MRD

The UPT2G331MRD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UPT series, designed for high ripple current handling in a compact can-style package. With a 330 µF capacitance at a 400 V rating and a -40 °C to 105 °C operating range, it targets general-purpose power-electronics applications and is explicitly suited for ballast applications.

Its value proposition is a combination of high-voltage capability, elevated ripple current performance across frequency, and long endurance (5000 hours at 105 °C under rated conditions), all while maintaining a miniature footprint for space-constrained designs.

Key Features

• Capacitance and Voltage — 330 µF nominal capacitance with a 400 V rated voltage to support high-voltage filtering and energy-storage needs.
• High Ripple Current — Rated for 1.4 A at 120 Hz and 2.24 A at 10 kHz, enabling effective ripple handling across low and high switching frequencies.
• Frequency Response — Ripple current frequency coefficient increases with frequency (120 Hz = 1.00, 10 kHz or more = 1.60), improving allowable ripple at higher switching frequencies.
• Long Endurance — Endurance specified as 5000 hours at 105 °C with D.C. bias plus rated ripple current, meeting long-life application requirements.
• Temperature Performance — Wide operating range from –40 °C to +105 °C; impedance stability at low temperature specified (Z(–25 °C)/Z(+20 °C) up to 8 for 400 V units).
• Leakage and Dissipation — Leakage current specified: after 2 minutes at 20 °C, I ≤ 0.06CV + 10 (µA). For 400 V parts, tan δ (loss factor) is specified with a maximum of 0.15 at 120 Hz.
• Package and Mounting — Radial lead, can-style package with 12.5 mm (1.25 cm) lead spacing and a compact size (L: 5 cm × D: 2.5 cm), polarized for correct circuit installation.
• Tolerance and Compliance — Capacitance tolerance ±20%; RoHS compliant.

Typical Applications

• Ballasts and Lighting Systems — Suited for ballast applications where high ripple handling and high-voltage capability are required.
• General-Purpose Power Electronics — Used for bulk filtering and smoothing in power-supply circuits that require a 400 V-rated electrolytic capacitor.
• High-Frequency Ripple Mitigation — Effective where elevated ripple currents at switching frequencies up to and beyond 10 kHz must be managed.

Unique Advantages

• High-Voltage, High-Capacity Combination: 330 µF at 400 V provides substantial energy storage for high-voltage rails in a single component.
• Compact Footprint: Miniature can-style package (50 mm × 25 mm) with 12.5 mm lead spacing helps reduce PCB area in space-constrained designs.
• Strong Ripple Capability Across Frequency: Specified ripple currents at 120 Hz and 10 kHz — together with frequency coefficients — let designers predict allowable ripple at their switching frequency.
• Long-Term Reliability: 5000-hour endurance at 105 °C under rated conditions supports designs with extended field life expectations.
• Measured Loss and Leakage Characteristics: Defined tan δ and leakage-current limits enable predictable performance for precision power designs.
• Regulatory Compliance: RoHS compliant to meet environmental requirements for modern electronics production.

Why Choose UPT2G331MRD?

UPT2G331MRD is positioned for engineers who need a compact, high-voltage electrolytic capacitor that balances high ripple capability with long operational life. Its combination of 330 µF at 400 V, defined ripple-current ratings across frequency, and a 5000-hour endurance at 105 °C makes it suitable for demanding power applications where space is limited and reliable performance is required.

This part is ideal for designers of ballasts and general-purpose power electronics seeking predictable electrical behavior (tan δ, leakage current, impedance at low temperature) and RoHS-compliant components from an established electrolytic series.

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