UPJ1K331MHD

The UPJ1K331MHD is a miniature, radial-lead aluminum electrolytic capacitor from Nichicon's UPJ series. It provides 330 µF capacitance at an 80 V rating with a polarized can-style package designed for general-purpose power applications.

Engineered for low impedance and high reliability, this part is suited for switching power supplies and other power-electronic circuits that require robust ripple handling and extended high-temperature endurance. The device is RoHS compliant and available in bulk or bag packing for production use.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with an 80 V rated voltage and capacitance tolerance of −20% to +20% (measured at 120 Hz, 20°C).
• Low Loss (tan δ) — tanδ = 0.08 (measured at 20°C, 120 Hz) to limit dissipation in power circuits.
• High Ripple Capability — Low-frequency ripple current 444.9 mA at 120 Hz and high-frequency ripple current 767 mA at 1 kHz, suitable for smoothing and filtering in switching regulators.
• Leakage Current — Specified leakage current of 792 µA, enabling predictable bias behavior after voltage application.
• High-Temperature Endurance — Rated life/endurance of 5000 hours at 105°C for sustained performance in elevated-temperature environments.
• Mechanical Package — Radial lead can with dimensions φ12.5 × 35.5 mm and 5.0 mm lead spacing (lead spacing tolerance ±0.5 mm); offered without terminal forming (bulk) or in bag packing.
• Series Attributes — Part of the UPJ series, designed for low impedance and intended use in switching power supplies; manufactured by Nichicon and in mass production.
• Environmental Compliance — RoHS compliant.

Typical Applications

• Switching Power Supplies — Output filtering and bulk smoothing where low impedance and ripple handling improve regulator stability and transient response.
• General-Purpose Power Electronics — Energy storage and decoupling in power distribution stages across industrial and commercial equipment.
• DC-DC Converters and Power Modules — Local energy reservoir and ripple attenuation for intermediate and output stages that operate at elevated temperatures.

Unique Advantages

• Designed for Low Impedance — UPJ series construction targets reduced ESR/impedance, helping lower losses in switching environments.
• Long High-Temperature Life — 5000-hour endurance at 105°C supports designs with sustained thermal stress, reducing maintenance and replacement frequency.
• Clear Ripple Ratings — Specified ripple currents at both 120 Hz and 1 kHz allow designers to size capacitors precisely for expected operating frequencies.
• Predictable Electrical Behavior — Specified leakage current and tanδ at standard test conditions provide reproducible performance for bias and loss calculations.
• Compact Radial Form Factor — φ12.5 × 35.5 mm radial can with 5 mm lead spacing fits through-hole layouts where axial or PCB-mounted cans are required.
• Production-Ready Packaging — Available in bulk or bag packing and listed as mass production for straightforward procurement and assembly planning.

Why Choose UPJ1K331MHD?

UPJ1K331MHD delivers a combination of 330 µF capacitance at 80 V, low loss (tanδ = 0.08), and explicit ripple/current specs that make it a practical choice for power-electronics designers focused on switching supplies and general-purpose power stages. Its 5000-hour endurance at 105°C and RoHS compliance make it appropriate for applications with sustained thermal demands and regulatory constraints.

This part is ideal for engineers and procurement teams looking for a reliable, production-ready radial aluminum electrolytic capacitor from Nichicon's UPJ family—offering measurable electrical parameters and form-factor details to simplify BOM selection and thermal/ripple design trade-offs.

To request a quote or submit a purchase inquiry for UPJ1K331MHD, please contact sales with your quantity and delivery requirements and reference the part number for fastest processing.