LLS2C391MELZ

The LLS2C391MELZ is a snap-in terminal aluminum electrolytic capacitor in Nichicon’s LLS series, offering 390 µF capacitance at a 160 V rating. It is designed for general-purpose power applications that require bulk capacitance with defined ripple endurance and long-term stability.

This radial can, tray-packed and in mass production, combines a compact φ22 × 25 mm package with an operating temperature range of −40°C to +85°C and a 3000-hour endurance at 85°C, making it suited to designs that demand consistent performance over extended operating periods.

Key Features

• Capacitance & Rated Voltage — 390 µF nominal capacitance with a 160 V rated voltage and ±20% tolerance, providing bulk energy storage for mid-voltage circuits.
• Endurance — Rated for 3000 hours at 85°C under DC bias plus rated ripple current, with capacitance change within ±20% and leakage current meeting initial specification after endurance.
• Ripple Current Performance — 1.63 A low-frequency ripple current at 120 Hz and 2.445 A high-frequency ripple current at 50 kHz, enabling effective ripple handling across common power frequencies.
• Low Dissipation Factor — tanδ of 0.15 (max) measured at 20°C and 120 Hz for stable loss characteristics in AC conditions.
• Leakage Current — Specified leakage current of 740 µA, measurable after rated voltage application and consistent with series leakage limits.
• Package & Mounting — Radial, snap-in can (φ22 × 25 mm), designed for secure snap-in mounting in vertical assemblies; supplied in tray packing for board-level handling.
• Operating Temperature — −40°C to +85°C category temperature range suitable for standard ambient operating environments covered by the series specification.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU,(EU)2015/863), supporting environmental compliance requirements.

Typical Applications

• General Purpose Power Circuits — Provides bulk capacitance and ripple suppression for mid-voltage power stages where a 160 V rating and 390 µF capacity are required.
• Power Supply Filtering — Used for smoothing and decoupling in power supplies, leveraging rated ripple current specifications and low tanδ for reliable operation.
• Industrial Electronics — Fits designs that demand long endurance at elevated temperatures, with 3000 hours specified at 85°C for sustained performance.

Unique Advantages

• High-voltage bulk capacitance: 160 V rating combined with 390 µF nominal capacitance delivers substantial energy storage in a compact can package.
• Documented long endurance: 3000 hours at 85°C under rated conditions provides predictable lifetime behavior for maintenance planning and reliability assessments.
• Measured ripple capability: Specified ripple currents of 1.63 A (120 Hz) and 2.445 A (50 kHz) enable designers to match the capacitor to expected AC stress profiles.
• Controlled loss characteristics: tanδ ≤ 0.15 at 20°C/120 Hz supports efficient operation where dissipation and heating must be managed.
• Practical form factor and mounting: Snap-in radial can (φ22 × 25 mm) simplifies mechanical retention on power boards and is supplied in trays for production handling.
• Regulatory alignment: RoHS compliance supports inclusion in environmentally regulated product lines.

Why Choose LLS2C391MELZ?

LLS2C391MELZ positions itself as a reliable, general-purpose snap-in aluminum electrolytic capacitor for mid-voltage power designs. Its combination of 160 V rating, 390 µF capacitance, specified ripple current values, low dissipation factor, and a 3000-hour endurance at 85°C provides a predictable electrical and thermal profile for engineers balancing bulk energy storage, ripple handling, and lifetime requirements.

This part is appropriate for designers and procurement teams seeking a tray-packed, mass-production component with RoHS compliance and well-documented series-level specifications for deployment in standard operating environments.

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