LLS2D391MELA

The LLS2D391MELA is a snap‑in terminal aluminum electrolytic capacitor rated for 200 V and 390 µF with ±20% tolerance. It is part of Nichicon’s LLS series and is intended for general‑purpose power applications that require high ripple handling and extended endurance at elevated temperatures.

Designed for equipment operating across –40°C to +85°C, this snap‑in, radial can capacitor offers long‑life performance (3000 hours at 85°C) along with specified low‑frequency and high‑frequency ripple current capability for robust AC ripple management in medium‑voltage designs.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance at a 200 V rated voltage, specified with ±20% tolerance for general‑purpose designs.
• Snap‑in Terminal Package: Radial can, snap‑in mounting for secure board installation; size listed as φ25 × 25 mm (2.5 × 2.5 cm).
• Endurance: Rated for 3000 hours at 85°C when DC bias plus rated ripple current is applied, meeting the LLS series endurance specification.
• Ripple Current Capability: 1.71 A at 120 Hz (low frequency) and 2.565 A at 50 kHz (high frequency), enabling effective ripple handling across common operating frequencies.
• Electrical Loss & Leakage: Maximum tan δ of 0.15 at 20°C and 120 Hz for 200 V parts; specified leakage current of 830 µA.
• Operating Temperature Range: –40°C to +85°C to match the LLS series category temperature range for the 200 V rating.
• Compliance & Packaging: RoHS‑compliant and supplied in tray packing; mass production status.

Typical Applications

• General‑purpose power systems: Use where a 200 V, 390 µF capacitor is required for bulk capacitance and ripple handling in general‑purpose equipment.
• High‑ripple environments: Suitable for circuits that impose significant AC ripple because of its 1.71 A (120 Hz) and 2.565 A (50 kHz) ripple current ratings.
• Elevated temperature installations: Engineered for continuous operation up to 85°C with a 3000‑hour endurance specification at that temperature.

Unique Advantages

• 200 V rating: Supports medium‑voltage designs requiring higher DC bias capability compared with lower‑voltage electrolytics.
• High ripple capacity: Specified ripple currents at both low and high frequencies help maintain performance in AC‑rich environments.
• Long‑term endurance: 3000 hours at 85°C under rated conditions provides predictable lifetime behavior for design planning.
• Low dissipation factor: tan δ of 0.15 (120 Hz, 20°C) reduces AC losses relative to higher loss parts at the same voltage class.
• Snap‑in form factor: Radial snap‑in can simplifies mechanical retention and assembly for through‑hole boards.
• Regulatory compliance: RoHS‑compliant construction supports restricted‑substance requirements.

Why Choose LLS2D391MELA?

LLS2D391MELA positions itself as a robust, general‑purpose aluminum electrolytic solution for designs requiring a 200 V rating, substantial capacitance, and verified ripple current capability at both low and high frequencies. Its 3000‑hour endurance at 85°C and specified electrical characteristics (tan δ, leakage current) make behavior predictable for engineers planning long‑term performance under rated conditions.

This part is suitable for engineers and procurement teams specifying snap‑in, through‑hole electrolytics where maintenance of ripple performance, thermal endurance, and RoHS compliance are required. Its tray packaging and mass production status support scale and repeatability in volume production runs.

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