LHT2W331MELB45

The LHT2W331MELB45 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LHT series. It delivers 330 µF at 450 V in a radial can (φ30 × 45 mm) designed for general‑purpose high‑voltage applications that require wide temperature performance and robust ripple handling.

Engineered for operation from −40 °C to +125 °C and RoHS compliant, this snap‑in capacitor offers long endurance and high ripple capability for equipment operating in elevated temperature environments.

Key Features

• Capacitance & Voltage — 330 µF rated capacitance at 450 V, suitable for high‑voltage bulk energy storage and filtering where a compact snap‑in can is required.
• Wide Temperature Range — Specified for −40 °C to +125 °C, supporting designs that must operate reliably across extended temperature extremes.
• High Endurance — 3000 hours endurance at 125 °C under DC bias plus rated ripple current, providing predictable lifetime performance in high‑temperature applications.
• Ripple Current & Frequency Performance — Rated ripple current of 1,480 mArms at 125 °C, 120 Hz; higher frequency rating provided (2.116 A at 50 kHz) for applications with elevated switching frequencies.
• Low Loss — Tangent of loss angle (tan δ) ≤ 0.20 at 120 Hz and 20 °C, indicating controlled dissipation for thermal and efficiency considerations.
• Leakage Current — Specified leakage current approximately 1.15 mA (after rated voltage application), enabling predictable standby and bias behavior.
• Package & Mounting — Radial, snap‑in can package (φ30 × 45 mm) for secure mechanical mounting and straightforward installation on power boards.
• RoHS Compliant — Conforms to RoHS requirements for material compliance in global designs.

Typical Applications

• General‑Purpose Power Electronics — Bulk energy storage and smoothing in high‑voltage power stages where 450 V ratings and compact snap‑in mounting are required.
• Industrial Power Supplies — Filtering and ripple management in power supplies operating at elevated temperatures up to 125 °C.
• High‑Frequency Switching Systems — DC link or smoothing in systems with significant switching activity, leveraging the capacitor’s available high‑frequency ripple capability.
• Equipment Operating in Elevated Temperatures — Applications that need sustained performance and endurance at high ambient and internal temperatures due to the 125 °C rating and 3000 h endurance.

Unique Advantages

• High‑Voltage, High‑Capacitance Combination — 330 µF at 450 V provides substantial energy storage in a compact φ30 × 45 mm snap‑in can, simplifying high‑voltage power subsystem design.
• Designed for Elevated Temperatures — Rated to −40 °C to +125 °C with 3000 hours endurance at 125 °C, supporting reliability in thermally demanding environments.
• Robust Ripple Handling — 1,480 mArms at 125 °C (120 Hz) and higher frequency capability (2.116 A at 50 kHz) help manage thermal rise and extend service life under ripple stress.
• Predictable Loss and Leakage — tan δ ≤ 0.20 and specified leakage behavior enable designers to budget dissipation and bias losses accurately.
• Snap‑in Mounting for Mechanical Stability — Radial snap‑in terminals provide secure mounting for high‑vibration or mechanically demanding assemblies.
• Regulatory Compliance — RoHS compliance supports deployment in regions and products requiring restricted‑substance adherence.

Why Choose LHT2W331MELB45?

The LHT2W331MELB45 offers a precise combination of high voltage, substantial capacitance, and 125 °C temperature capability in a snap‑in aluminum electrolytic form factor. Its rated ripple current, controlled loss characteristics, and extended 3000‑hour endurance at elevated temperature make it well suited to designers who need predictable performance and longevity in general‑purpose power systems.

This part is a fit for engineers and procurement teams specifying high‑voltage bulk capacitors for power supplies, switching systems, and other equipment exposed to elevated temperatures, where robustness, known leakage behavior, and RoHS compliance are required.

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