LGR2W181MELB45

The LGR2W181MELB45 is a Nichicon LGR series aluminum electrolytic capacitor in a snap‑in terminal, radial can package. Designed for general-purpose high‑voltage applications, it provides 180 µF capacitance at a 450 V rating with a long‑life assurance suited to demanding ripple conditions.

Key value propositions include long ripple‑endurance at elevated temperature, RoHS compliance, and construction optimized for snap‑in mounting in board‑level power assemblies.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance with a 450 V rated voltage; capacitance tolerance is ±20% at 120 Hz, 20°C.
• Long‑Life Endurance — Series long‑life assurance: specified to withstand 10,000 hours of DC bias plus rated ripple current at 105°C, with capacitance change within ±25% after endurance.
• High Temperature Operation — Rated operating temperature range of −25°C to +105°C, enabling use in higher‑temperature power environments covered by the series specification.
• Ripple Current Capability — Rated ripple current of 870 mA at 120 Hz and 1.244 A at 50 kHz for this part, with series frequency coefficients provided in the datasheet for scaling across frequencies.
• Electrical Reliability — Leakage current specified by I ≤ 3√(C·V) (μA) after 5 minutes at 20°C; tan δ max of 0.20 at the 450 V rating, supporting predictable AC loss behavior.
• Package & Mounting — Radial can, snap‑in terminal type for secure board mounting and mechanical stability; part dimensions L: 4.5 × D: 3 cm are provided for layout planning.
• Environmental Compliance — RoHS compliant per the directive references noted for the series.

Typical Applications

• High‑voltage DC filtering — Bulk smoothing and energy storage on 450 V DC rails where high working voltage and robust ripple endurance are required.
• Industrial power supplies — Use in power conversion and conditioning circuits that operate at elevated temperatures up to 105°C and demand long ripple life.
• Power electronics assemblies — Board‑level snap‑in mounting for large capacitance in compact radial can form factors for general‑purpose power modules.

Unique Advantages

• Long ripple endurance: Specified 10,000 hours at 105°C under rated ripple conditions, delivering predictable lifetime behavior in high‑stress applications.
• High working voltage: 450 V rating enables use on high‑voltage DC rails without series stacking, simplifying BOM and layout.
• Frequency‑aware ripple rating: Documented ripple currents at 120 Hz and 50 kHz plus frequency coefficients in the series datasheet allow engineering‑level ripple planning across frequencies.
• Robust electrical limits: Leakage current and tan δ specifications provide measurable, verifiable limits for reliability and screening in production test plans.
• Snap‑in radial package: Mechanical stability for board mounting with dimensions provided for straightforward layout and assembly integration.
• Regulatory compliance: RoHS conformity supports use in regions requiring the directive adherence noted for the series.

Why Choose LGR2W181MELB45?

The LGR2W181MELB45 combines a high 450 V rating with sizeable 180 µF capacitance in a snap‑in aluminum electrolytic package, built to the LGR series’ long‑life specification. Its endurance at 105°C under rated ripple current and clear electrical limits (leakage, tan δ) make it suitable for engineers specifying reliable bulk capacitance in high‑voltage power designs.

This part is a practical choice for designers and procurement teams seeking a verified, RoHS‑compliant electrolytic capacitor from Nichicon’s LGR series, offering predictable lifetime characteristics and mounting convenience for board‑level power assemblies.

If you need pricing, availability, or a formal quote for LGR2W181MELB45, request a quote or contact our sales team to discuss your project requirements and lead times.