LGU2Z391MELZ

The LGU2Z391MELZ from Nichicon is a snap‑in terminal aluminum electrolytic capacitor in the LGU series. It provides 390 µF capacitance at a 180 V rating in a compact φ22 × 30 mm can with snap‑in mounting and tray packing.

Designed for general‑purpose applications, this part combines high ripple handling, defined low‑loss characteristics, and long endurance—offering reliable DC bias and smoothing performance across an operating range of −40°C to 105°C.

Key Features

• Capacitance & Rated Voltage — 390 µF nominal capacitance with a 180 V rated voltage and ±20% tolerance at 120 Hz, 20°C.
• High Temperature Endurance — Rated for 3000 hours at 105°C under DC bias plus rated ripple current, supporting long service life in elevated operating temperatures.
• Ripple Current Capability — Low‑frequency ripple current of 1.35 A at 120 Hz and high‑frequency ripple current of 2.025 A at 50 kHz, enabling effective ripple suppression across frequency ranges.
• Low Dissipation Factor — tanδ of 0.15 (measured at 20°C, 120 Hz for this voltage range), supporting lower internal losses in AC and ripple conditions.
• Leakage Current — Specified leakage current of 790 µA after rated voltage application, for predictable standby and leakage behavior.
• Robust Packaging & Mounting — Snap‑in terminal radial can (φ22 × 30 mm) for secure PCB mounting and tray packing for production handling.
• Wide Operating Temperature — Rated from −40°C to +105°C for use in varied thermal environments.
• RoHS Compliant — Conforms to applicable RoHS directives.

Typical Applications

• General‑Purpose Power Filtering — Provides bulk capacitance and ripple smoothing in general‑purpose power supply designs that require a 180 V, 390 µF snap‑in capacitor.
• DC Link and Energy Storage — Suitable where elevated ripple current handling and high temperature endurance are needed for DC bias stabilization and local energy buffering.
• Industrial Electronics — Fits designs needing long endurance at 105°C and predictable leakage and dissipation characteristics for sustained operation.

Unique Advantages

• Long Thermal Endurance: 3000 hours at 105°C under rated ripple current ensures durability in high‑temperature service conditions.
• Frequency‑Versatile Ripple Performance: Specified ripple current at both 120 Hz and 50 kHz provides predictable performance across low and high frequency ripple environments.
• Stable Loss Characteristics: tanδ of 0.15 at 120 Hz supports lower internal heat generation and stable AC performance.
• Compact Snap‑in Form Factor: φ22 × 30 mm radial can with snap‑in terminals simplifies secure PCB mounting for production assemblies.
• Predictable Electrical Parameters: Defined leakage current and ±20% capacitance tolerance enable reliable BOM and system design decisions.
• Regulatory Compliance: RoHS compliance supports environmental and regulatory requirements.

Why Choose LGU2Z391MELZ?

LGU2Z391MELZ balances bulk capacitance, high voltage rating, and sustained ripple endurance in a compact snap‑in package from Nichicon’s LGU series. Its combination of 390 µF at 180 V, defined tanδ, specified leakage, and 3000‑hour endurance at 105°C delivers measurable, verifiable characteristics for designs requiring stable DC filtering and energy buffering under thermal stress.

This part is well suited to engineers specifying general‑purpose electrolytic solutions where long life, predictable ripple handling, and compliance with RoHS are required. The clear electrical and mechanical specifications make it straightforward to integrate into production assemblies and maintenance planning.

If you would like pricing or availability, request a quote or submit a sales inquiry referencing part number LGU2Z391MELZ to receive a formal quote and availability details.