LGNW6181MELZ40

The LGNW6181MELZ40 is a snap-in terminal aluminum electrolytic capacitor in Nichicon’s LGN series, offering 180 µF capacitance at a 420 V rated voltage. It is designed as a general-purpose power component for applications requiring high-voltage smoothing and energy storage within a compact radial, snap‑in can.

Key value propositions include high ripple-current endurance, a long 3000‑hour life at 105°C under rated conditions, and a compact φ22 × 40 mm case that supports reliable board mounting using snap‑in terminals.

Key Features

• Capacitance and Voltage — 180 µF rated capacitance at 420 V for high-voltage general-purpose applications.
• High Temperature Endurance — Rated lifetime of 3000 hours at 105°C when operated under rated ripple and DC bias conditions.
• Ripple Current Performance — Low-frequency ripple current 910 mA at 120 Hz and high-frequency ripple current 1.301 A at 100 kHz, enabling robust AC load handling within specified conditions.
• Low Leakage — Specified leakage current of 820 µA (measured after 5 minutes’ application of rated voltage at 20°C as per datasheet guidance).
• Loss Tangent — tan δ (dissipation factor) specified at 0.15 (measured at 20°C, 120 Hz), supporting predictable ESR behavior in designs.
• Temperature Range — Operating range from −25°C to 105°C to accommodate elevated-temperature environments at the 420 V rating.
• Compact Snap‑In Package — Radial, can-type snap‑in mounting in a φ22 × 40 mm package (L: 4 × D: 2.2 cm) for secure board retention and tray packing for production handling.
• RoHS Compliant — Built in compliance with RoHS requirements.

Typical Applications

• General-Purpose Power Electronics — Intended for general-purpose circuits requiring 420 V capacitance and robust ripple handling.
• High-Voltage Filter and Smoothing — Used where a 180 µF, 420 V snap‑in capacitor is required for DC link filtering or bulk smoothing within the stated temperature and lifecycle limits.
• Industrial Equipment — Suitable for industrial power modules and assemblies that operate up to 105°C and require long endurance under rated ripple conditions.

Unique Advantages

• Long High-Temperature Reliability — 3000 hours endurance at 105°C under rated ripple and DC bias provides predictable life performance for sustained high-temperature operation.
• Demonstrated Ripple Capability — Specified low- and high-frequency ripple currents (910 mA @120 Hz, 1.301 A @100 kHz) enable designers to size capacitors against expected AC stress.
• Compact, Secure Mounting — Snap‑in radial can (φ22 × 40 mm) offers a smaller case profile with secure board retention for production assemblies.
• Controlled Electrical Losses — tan δ of 0.15 at 20°C/120 Hz supports reliable dissipation factor characteristics for predictable circuit behavior.
• Low Initial Leakage — Initial leakage current specified at 820 µA, aiding designs that require controlled standby and operating currents.
• Production-Ready Packaging — Tray packing and mass-production status support volume assembly and handling requirements.

Why Choose LGNW6181MELZ40?

LGNW6181MELZ40 combines a 420 V rating with 180 µF capacitance in a compact snap‑in aluminum can, offering designers a balance of high-voltage capability, ripple endurance, and long-term stability at elevated temperatures. Its 3000‑hour 105°C endurance and specified ripple and leakage characteristics make it appropriate for demanding general-purpose power-electronics designs.

This part is aimed at engineers and procurement teams building high-voltage power stages, filter networks, and industrial power assemblies where verified electrical performance, a compact footprint, and RoHS compliance are required.

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