UHE1J391MHD

The UHE1J391MHD is a radial-lead aluminum electrolytic capacitor from Nichicon’s UHE series, providing a high-reliability, miniature can-style solution. It delivers 390 µF capacitance at a 63 V rating in a compact φ18 × 15L package with 7.5 mm lead spacing.

Designed for general-purpose power filtering and energy storage in through-hole designs, this part combines low impedance, elevated ripple-current capability, and long life (10,000 hours at 105°C) for robust performance in industrial and equipment applications.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 63 V for mid-voltage power rails and bulk filtering.
• Low Impedance — Rated impedance of 500 mΩ supports stable filtering and low-loss operation.
• High Ripple Current Capability — 772.5 mA at 120 Hz (low frequency) and 1.03 A at 10 kHz (high frequency) to handle ripple and switching noise.
• Loss Tangent (tan δ) — tanδ = 0.09 measured at 20°C, 120 Hz, supporting predictable AC behavior in filter designs.
• Long Endurance — Rated for 10,000 hours at 105°C, suitable for designs requiring extended lifetime at elevated temperatures.
• Compact Radial Can Package — φ18 × 15L (1.8 × 1.5 cm) can with 7.5 mm lead spacing and radial leads for through-hole mounting and ease of replacement or prototyping.
• Leakage Current — Typical leakage current 245.7 µA for minimized standby losses.
• RoHS Compliant & Production Ready — RoHS compliant and listed as mass production, with bulk (no terminal forming) and bag packing options for stocking and assembly.

Typical Applications

• Power Supply Filtering — Bulk and smoothing capacitor for DC rails where 63 V rating and 390 µF capacitance reduce ripple and stabilize regulators.
• DC-DC Converters and Power Modules — Supports switching environments with high ripple-current capability at both low and high frequencies.
• Industrial Control Equipment — Through-hole radial form factor and long 10,000-hour life at 105°C suit service in industrial power and control systems.
• Telecom & Networking Equipment — Provides energy buffering and decoupling on mid-voltage power buses where low impedance and predictable loss tangent matter.

Unique Advantages

• Balanced Performance Profile — 390 µF at 63 V combines useful capacitance and voltage margin for many mid-voltage power rails.
• Low Impedance for Effective Filtering — 500 mΩ impedance and tanδ = 0.09 (20°C, 120 Hz) help reduce ripple and improve regulator stability.
• Handles Real-World Ripple — Rated ripple currents of 772.5 mA (120 Hz) and 1.03 A (10 kHz) enable use in both linear and switching applications.
• Durability in Elevated Temperatures — 10,000-hour endurance at 105°C provides long-term reliability in thermally demanding installations.
• Compact, Serviceable Through-Hole Form — φ18 × 15L radial can with 7.5 mm lead spacing is easy to mount, replace, or prototype with standard through-hole workflows.
• Low Standby Losses — Leakage current of 245.7 µA reduces quiescent power drain in idle or low-power states.

Why Choose UHE1J391MHD?

The UHE1J391MHD balances capacitance, voltage rating, and thermal endurance to serve as a dependable through-hole electrolytic solution where long life and reliable filtering are required. Its low impedance, defined loss tangent, and strong ripple-current capability make it suitable for designers building power supplies, converters, and industrial equipment that must run continuously at elevated temperatures.

Manufactured by Nichicon and offered in mass-production quantities with RoHS compliance and practical packing options, UHE1J391MHD delivers a predictable, serviceable component choice for engineers specifying mid-voltage aluminum electrolytic capacitors.

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