UPJ2A331MHD6

The UPJ2A331MHD6 is a radial-lead aluminum electrolytic capacitor from Nichicon’s UPJ series, offering 330 µF nominal capacitance at a 100 V rating with a ±20% tolerance. Designed as a low-impedance power component, it is specified for general-purpose use and is noted in the series documentation as ideally suited for switching power supplies.

This part delivers a long operating life under elevated temperature stress—5000 hours at 105°C—together with defined ripple-current capability and controlled leakage current, making it appropriate for through-hole power applications that require robust, high-voltage smoothing and filtering.

Key Features

• Capacitance & Voltage: 330 µF nominal at a 100 V rated voltage with ±20% tolerance (measured at 120 Hz, 20°C).
• Low Impedance for Power Conversion: Part of the UPJ series specified as low impedance and intended for switching power supplies; useful where reduced ESR is required.
• Loss Angle (tan δ): tanδ specified at 0.08 for the 63–100 V rating class, providing a defined dissipation characteristic for design calculations.
• Leakage Current: Specified leakage current of 990 µA.
• Ripple Current Capability: 626.4 mA at 120 Hz and 1.08 A at 200 kHz, supporting both low- and high-frequency ripple conditions.
• High-Temperature Endurance: Rated for 5000 hours at +105°C with endurance limits defined (capacitance change within ±20%, tanδ up to 200% of initial spec, leakage current ≤ initial spec).
• Package & Mounting: Radial, can-style package—φ12.5 × 25 mm body with 7.5 mm lead spacing; polarized for through-hole assemblies and supplied in bulk packing.
• Operating Temperature Range: −55°C to +105°C for broad environmental tolerance.
• RoHS Compliance: Compliant with the RoHS directive.

Typical Applications

• Switching Power Supplies: Low-impedance design and rated ripple current make this capacitor suited for output smoothing and bulk decoupling in switching regulators.
• High-Voltage Power Rails: 100 V rating supports filtering and energy storage on higher-voltage DC rails in industrial and power-electronics equipment.
• General-Purpose Power Filtering: Through-hole radial format and long high-temperature life are useful for general-purpose smoothing and filtering in assembled power modules and control equipment.

Unique Advantages

• High Voltage Capability: 100 V rating provides margin for higher-voltage designs without changing capacitor family.
• Specification-Driven Reliability: 5000-hour endurance at 105°C with clear pass/fail criteria for capacitance, tanδ, and leakage current supports predictable long-term performance.
• Measured Ripple Performance: Published ripple current values at 120 Hz and 200 kHz enable designers to size components against expected ripple conditions.
• Low Dissipation Characteristic: tanδ = 0.08 (63–100 V class) provides a quantifiable loss parameter for thermal and efficiency considerations.
• Through-Hole Robustness: Radial-lead can package (φ12.5 × 25 mm, 7.5 mm lead spacing) eases handling and mounting in conventional PCB assemblies.
• Regulatory Compliance: RoHS-compliant construction supports use in regulated markets.

Why Choose UPJ2A331MHD6?

The UPJ2A331MHD6 combines a high 100 V rating, substantial capacitance (330 µF), and a low-impedance UPJ-series design tailored for switching power environments. Its defined ripple-current ratings, specified tanδ, and 5000-hour life at 105°C make it a practical choice for engineers needing a reliable through-hole capacitor for higher-voltage rails and power-supply smoothing.

This part suits procurement and design teams seeking a verified, RoHS-compliant radial electrolytic capacitor with clear endurance and electrical specifications for industrial and power-electronics applications.

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