UPJ2A391MHD

The UPJ2A391MHD is a radial-lead aluminum electrolytic capacitor from Nichicon's UPJ series, offering 390 µF capacitance at a 100 V rating. Designed as a low-impedance, high-reliability component, it targets power applications that require robust ripple handling and long operating life.

Its combination of 390 µF capacitance, a -55°C to 105°C operating range, and a 5,000 hour endurance at 105°C makes it well suited for switching power supplies and general-purpose power filtering in industrial and electronic systems.

Key Features

• Electrical Performance — 390 µF capacitance with a rated voltage of 100 V and capacitance tolerance of -20% to +20%, suitable for moderate energy storage and smoothing tasks.
• Low Loss / Low Impedance — Tangent of loss angle (tanδ) is 0.08 (measured at 20°C, 120 Hz), supporting efficient operation in power circuits.
• Ripple Current Handling — Low-frequency ripple current of 804 mA at 120 Hz and high-frequency ripple current of 1.34 A at 200 kHz, enabling reliable performance under AC ripple stress.
• Leakage Current — Specified leakage current of 1170 µA, consistent with electrolytic capacitor characteristics at rated conditions.
• Reliability & Lifetime — Rated for 5000 hours of load life at 105°C (series specification) to support extended operating life in demanding thermal environments.
• Mechanical & Mounting — Radial lead, can-style package with dimensions φ16 × 35.5 mm and 7.5 mm lead spacing (±0.5 mm), available in bulk or bag packing.
• Operating Range & Polarization — Polarized capacitor rated for use from -55°C to 105°C, suitable for a wide ambient temperature range.
• Regulatory — RoHS compliant.

Typical Applications

• Switching Power Supplies — Low-impedance design and rated ripple currents make this capacitor well suited for output smoothing and decoupling in switching regulators.
• General-Purpose Power Filtering — Useful for bulk filtering and energy storage in a variety of general-purpose electronic power circuits.
• Industrial Power Modules — Long endurance at elevated temperature supports use in industrial assemblies and power electronics where sustained thermal load is expected.

Unique Advantages

• Optimized for low impedance — A measured tanδ of 0.08 at 20°C/120 Hz reduces AC losses in power circuits.
• High ripple capability — Dual ripple ratings (804 mA at 120 Hz and 1.34 A at 200 kHz) provide measured performance across common ripple frequencies.
• Extended high-temperature life — 5000 hour endurance at 105°C offers predictable long-term performance under continuous load.
• Compact radial package — φ16 × 35.5 mm can with standard 7.5 mm lead spacing simplifies through‑hole implementation in power boards.
• RoHS compliant — Meets regulatory requirements for lead‑free manufacturing environments.

Why Choose UPJ2A391MHD?

UPJ2A391MHD delivers a balanced combination of capacitance, voltage rating, and measured ripple capability for designers focused on switching power supplies and general-purpose power filtering. The UPJ series' low-impedance construction and 5000 hour life at 105°C provide predictable behavior in sustained thermal and electrical stress conditions.

This part is appropriate for engineers and procurement teams specifying polarized aluminum electrolytic capacitors where reliable ripple handling, moderate energy storage, and RoHS compliance are required. Its radial can package and standard lead spacing make it straightforward to integrate into through-hole power layouts.

To request a quote or check availability for UPJ2A391MHD, please submit an inquiry to our sales team with your quantity and delivery requirements.