LHX2W391MELB50

The LHX2W391MELB50 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LHX series, designed for long life operation at elevated temperatures. With a 450 V rated voltage and 390 µF capacitance, this radial can (snap‑in) device targets general‑purpose applications that require high temperature support and reliable performance.

Key value propositions include 125°C rated operation, a 5000‑hour long life assurance at 125°C under rated conditions, and RoHS compliance, making it suitable for equipment where sustained high‑temperature endurance and dependable filtering or energy buffering are required.

Key Features

• High Temperature Long Life — Rated for operation from −40°C to +125°C with a specified endurance of 5000 hours at 125°C when subjected to DC bias plus rated ripple current.
• Electrical Ratings — 390 µF capacitance with ±20% tolerance and a 450 V rated voltage for high‑voltage smoothing and energy storage roles.
• Ripple Handling — Rated ripple current of 1.64 A at 120 Hz (125°C); frequency coefficient data provided for higher frequencies including a factor to 50 kHz (resulting example value 2.345 A at 50 kHz).
• Leakage and Dissipation — Leakage current specified by I ≤ 3√CV (µA) after 5 minutes at 20°C; tangent of loss angle (tan δ) max 0.20 at 120 Hz, 20°C.
• Mechanical and Mounting — Snap‑in terminal radial can package for secure board mounting; physical size is approximately L: 5 × D: 3 cm and printed marking in white on a black sleeve for clear identification.
• Low‑Temperature Stability — Impedance stability specified with Z(−25°C) / Z(+20°C) ≤ 8 at 120 Hz, supporting performance in colder conditions as well as at high temperatures.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863) for restricted substances.

Typical Applications

• General‑Purpose, High‑Temperature Equipment — For smoothing, filtering and bulk energy storage in equipment that requires sustained performance at elevated ambient temperatures up to 125°C.
• Power Electronics Modules — Suitable where a 450 V rated capacitor with robust ripple handling and long life at high temperature is required for DC bus support or decoupling.
• Industrial and Reliability‑Focused Systems — Use in systems that demand long‑term stability and reliability under continuous bias and ripple stress at high temperatures.

Unique Advantages

• 125°C Long‑Life Assurance: Endurance specified for 5000 hours at 125°C under DC bias plus rated ripple current, providing predictable lifetime behavior in high‑temperature environments.
• High Voltage Capability: 450 V rating enables use in higher‑voltage power rails and DC bus applications without additional series parts.
• Robust Ripple Performance: Rated ripple current of 1.64 A at 120 Hz (125°C) with frequency coefficients provided for higher frequencies, enabling designers to size ripple handling accurately.
• Clear Identification: White printing on a black sleeve simplifies visual identification during assembly and maintenance.
• Regulatory Compliance: RoHS conformity reduces material‑compliance risk and simplifies environmental review for product qualification.
• Secure Snap‑In Mounting: Radial, snap‑in can package supports reliable board retention for heavy current or vibration environments.

Why Choose LHX2W391MELB50?

The LHX2W391MELB50 positions itself as a durable, high‑voltage electrolytic solution for designs that require sustained performance at elevated temperatures. Its combination of 450 V rating, 390 µF capacitance, specified ripple handling and a 5000‑hour endurance rating at 125°C makes it a practical choice for engineers addressing reliability and thermal stress in power and industrial equipment.

This part is well suited to designers and procurement teams looking for a RoHS‑compliant, snap‑in aluminum electrolytic capacitor that delivers measurable, datasheet‑backed endurance and electrical performance for long‑life systems.

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