LHT2W391MELC40

The LHT2W391MELC40 is a Nichicon LHT series snap‑in terminal aluminum electrolytic capacitor specified at 390 µF and 450 V. It is a radial, can‑type, snap‑in capacitor designed for general‑purpose high‑voltage power applications that require bulk energy storage and filtering under elevated temperatures.

Key value propositions include a wide operating temperature range (−40 °C to +125 °C), robust endurance (3000 hours at 125 °C), and snap‑in mounting for secure, through‑hole assembly in power modules and chassis installations.

Key Features

• Electrical Capacity — 390 µF nominal capacitance with ±20% tolerance (120 Hz, 20 °C), providing substantial bulk storage for high‑voltage circuits.
• High Voltage Rating — 450 V rated voltage suitable for high‑voltage smoothing and energy storage tasks.
• Low Loss & Leakage — Tangent of loss angle (tan δ) ≤ 0.20 at 120 Hz, 20 °C, and leakage current ≤ 1.25 mA as specified.
• Ripple Current Handling — Rated ripple current of 1.7 A (120 Hz at 125 °C) with higher‑frequency capability (2.431 A at 50 kHz) for demanding power conversion environments.
• Wide Temperature & Endurance — Operating range −40 °C to +125 °C and endurance of 3000 hours at 125 °C under rated D.C. bias plus rated ripple current.
• Mounting & Package — Snap‑in terminal, radial can package (φ35 × 40 mm) for secure through‑hole mounting in power assemblies.
• Regulatory — RoHS compliant.
• Polarized — Designed as a polar electrolytic capacitor for DC applications.

Typical Applications

• High‑Voltage Power Filtering — Bulk smoothing and decoupling in high‑voltage power supplies and DC link stages, leveraging the 450 V rating and 390 µF capacitance.
• Power Conversion & Inverters — Handles ripple currents and elevated temperatures in power converters where 125 °C endurance and rated ripple current are required.
• Industrial Power Modules — Through‑hole snap‑in mounting and robust endurance suit installation in industrial power equipment and assemblies.

Unique Advantages

• High‑voltage capability: 450 V rating enables use in higher DC bus and power stages without series stacking.
• Wide operating temperature: −40 °C to +125 °C supports operation in thermally demanding environments.
• Long endurance at high temperature: 3000 hours at 125 °C provides predictable lifetime performance under elevated stress.
• Strong ripple performance: 1.7 A rated ripple at 120 Hz (125 °C) and 2.431 A at 50 kHz cover a broad frequency range of power electronics ripple profiles.
• Secure mechanical mounting: Snap‑in radial can facilitates reliable through‑hole installation in power assemblies and chassis.
• Low loss characteristics: tan δ ≤ 0.20 and controlled leakage current help maintain efficiency and thermal stability.

Why Choose LHT2W391MELC40?

The Nichicon LHT2W391MELC40 positions itself as a robust choice for designs that require high‑voltage bulk capacitance combined with extended high‑temperature endurance. Its combination of 390 µF at 450 V, high ripple handling, and a −40 °C to +125 °C operating range makes it well suited to power supplies, converters, and industrial power modules where reliable energy storage and filtering are critical.

Backed by the LHT series specifications, this snap‑in, radial can capacitor delivers verifiable electrical and thermal characteristics for engineers seeking predictable performance and straightforward through‑hole mounting in demanding power applications.

Request a quote or contact sales to discuss availability, pricing, and how the LHT2W391MELC40 can meet your high‑voltage capacitor requirements.