LHT2W331MELC35

The LHT2W331MELC35 is a snap-in terminal aluminum electrolytic capacitor designed for high-voltage, high-temperature power applications. As part of the Nichicon LHT series, it offers a 330 µF capacitance at a 450 V rating in a radial, snap-in can package sized φ35 × 35 mm.

This capacitor targets industrial and power-conversion markets where sustained ripple handling, wide temperature operation, and long-term reliability are required. It combines high-voltage capability with a wide operating temperature range and extended endurance to support demanding DC link and bulk energy-storage roles.

Key Features

• Rated Capacitance & Voltage — 330 µF capacitance rated at 450 V, suitable for high-voltage DC link and bulk smoothing applications.
• Ripple Current Handling — Rated ripple current of 1.51 A (1510 mArms) at 120 Hz and specified high-frequency ripple performance, supporting stable operation under continuous ripple stress.
• Wide Temperature Range — Operational from −40 °C to +125 °C to accommodate harsh environments and elevated-temperature electronics.
• Extended Endurance — Designed to meet endurance requirements with performance validated after 3000 hours at 125 °C under DC bias plus rated ripple current.
• Leakage Current Specification — Leakage current limited by I ≤ 3√CV (µA) after 5 minutes’ application of rated voltage at 20 °C, enabling predictable leakage behavior for system design.
• Low Loss Angle — Tangent of loss angle (tan δ) specified at 0.20 max (120 Hz, 20 °C), aiding efficiency in power conversion circuits.
• Package & Mounting — Radial snap-in can (φ35 × 35 mm) for secure PCB mounting in high-current, high-vibration installations.
• RoHS Compliant — Meets RoHS requirements for restricted substances.

Typical Applications

• Industrial Power Supplies — Bulk energy storage and DC link smoothing where high-voltage filtering and long-term stability at elevated temperatures are needed.
• Inverters and Motor Drives — DC link and smoothing capacitor for motor control and variable-frequency drives subject to continuous ripple currents.
• UPS and Backup Power — Energy buffering and smoothing in uninterruptible power supplies and standby power systems.
• Renewable Energy Converters — Filtering and energy storage in photovoltaic inverters and other renewable-energy power electronics operating at high DC voltages.

Unique Advantages

• High-Voltage Capability: 450 V rating supports high-voltage DC bus designs without series stacking, simplifying system architecture.
• Wide Operating Temperature: −40 °C to +125 °C range enables deployment in elevated-temperature and industrial environments, reducing cooling constraints.
• Long-Term Reliability: Endurance validated for 3000 hours at 125 °C under DC bias plus rated ripple current, providing predictable lifetime behavior in demanding applications.
• Robust Ripple Performance: Rated ripple current of 1.51 A at 120 Hz with documented frequency coefficients for higher-frequency operation, allowing designers to size capacitors for real-world ripple spectra.
• Predictable Leakage Behavior: Leakage current specified by a clear I ≤ 3√CV formula after voltage application, simplifying power-loss and standby calculations.
• Secure Mounting: Snap-in radial can package offers reliable mechanical retention for high-current board layouts and industrial assemblies.

Why Choose LHT2W331MELC35?

The LHT2W331MELC35 positions itself as a practical choice for high-voltage power designs that need durable, predictable capacitance and ripple performance at elevated temperatures. With a 450 V rating, wide −40 °C to +125 °C operating range, and validated endurance at 125 °C, it is suited to engineers specifying components for industrial power conversion, inverters, UPS systems, and other applications where long-term thermal and electrical stress are factors.

Engineers benefit from a clear set of electrical and mechanical specifications—330 µF capacitance, ±20% tolerance, leakage current formula, and snap-in can package—that simplify BOM decisions, thermal planning, and PCB integration while maintaining compliance with RoHS requirements.

Request a quote or submit a pricing and availability inquiry to evaluate LHT2W331MELC35 for your next high-voltage power design.