UHW1J390MED

The UHW1J390MED is a polarized aluminum electrolytic capacitor in Nichicon’s UHW series, offered in a compact radial-lead can. It delivers 39 µF capacitance at a 63 V rating with a small φ6.3 × 11 mm package and 2.5 mm lead spacing.

Designed for general-purpose electronic applications, the part emphasizes compact size, high ripple capability and reliable operation across a wide temperature range, making it suitable for board-level designs where space and steady electrical performance matter.

Key Features

• Capacitance & Voltage — 39 µF nominal capacitance, rated for 63 V with a tolerance of -20% to +20%.
• Electrical performance — Tangent of loss angle (tanδ) 0.09 measured at 20°C, 120 Hz; leakage current rated at 24.57 µA.
• Ripple current capability — Low-frequency ripple current 200 mA (120 Hz) and high-frequency ripple current 500 mA (10 kHz), supporting stable performance under AC ripple stress.
• Temperature & endurance — Operating range −40°C to +105°C with a rated lifetime of 8000 hours at 105°C.
• Compact radial package — Radial lead construction in a can case with dimensions φ6.3 × 11 mm and lead spacing 2.5 mm (±0.5 mm); available in bulk or bag packing.
• Series characteristics — Part of the UHW family, noted for lower impedance at high frequencies and a compact footprint for high ripple applications.
• RoHS compliant — Meets the RoHS directive as indicated in the product data.

Typical Applications

• General-purpose electronic designs — For circuits that require a compact polarized 39 µF / 63 V electrolytic capacitor with RoHS compliance and board-level radial mounting.
• Power filtering on PCBs — Use where specified ripple current ratings (200 mA @120 Hz, 500 mA @10 kHz) and low dissipation (tanδ 0.09) help maintain stable decoupling and smoothing.
• Compact assemblies and prototypes — Small φ6.3 × 11 mm size and radial-lead form factor suit space-constrained board layouts and hand-assembled prototypes.

Unique Advantages

• Miniature footprint: φ6.3 × 11 mm can reduces board area compared with larger electrolytic options while preserving 39 µF capacitance.
• High ripple handling: Specified low- and high-frequency ripple currents (200 mA / 500 mA) support applications with significant AC content across the capacitor.
• Low dissipation factor: tanδ of 0.09 (20°C, 120 Hz) indicates low AC loss for improved efficiency in ripple-heavy environments.
• Wide operating temperature: Rated −40°C to +105°C to cover typical operating conditions for general-purpose electronics.
• Long endurance at elevated temperature: 8000 hours at 105°C offers predictable lifetime for thermal-stressed designs.
• RoHS compliance: Conforms to RoHS requirements for use in restricted-substance environments.

Why Choose UHW1J390MED?

The UHW1J390MED combines a compact radial can, solid electrical characteristics and defined endurance to deliver a reliable polarized capacitor option for general-purpose electronic assemblies. Its 39 µF / 63 V rating, low tanδ and specified ripple current figures make it a practical choice where space efficiency and steady AC performance are required.

This part is suited to engineers and procurement teams specifying board-level electrolytics for compact designs that need clear, verifiable electrical and mechanical parameters, along with RoHS compliance and defined lifetime performance at elevated temperature.

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