LAR2G181MELB25

The LAR2G181MELB25 is a Nichicon LAR series aluminum electrolytic capacitor in a snap‑in terminal radial can. It delivers 180 µF at a rated voltage of 400 V in a compact φ30 × 25 mm form factor for general‑purpose power applications.

Designed for sustained operation at elevated temperature, this part withstands rated ripple current for 2000 hours at 105°C and includes measures to reduce short incidence under overvoltage conditions (rated voltage × 1.5). It is RoHS compliant.

Key Features

• High Voltage & Capacitance — 180 µF nominal capacitance at a 400 V rated voltage, suitable for energy storage and smoothing in medium‑voltage DC systems.
• Snap‑in Radial Package — Snap‑in terminal, radial can construction (φ30 × 25 mm) for secure PCB mounting and mechanical stability.
• 105°C Endurance — Specified to withstand rated ripple current for 2000 hours at 105°C, with capacitance change within ±20% after endurance testing.
• Ripple Current Performance — Rated ripple current of 950 mA at 120 Hz and 1.359 A at 50 kHz, enabling handling of both low‑ and high‑frequency ripple in power electronics.
• Overvoltage Safety Design — Designed to reduce incidence of shorts when overvoltage (rated voltage × 1.5, limited current = 1 A) is applied; safety testing shows more than 60% passing under those conditions.
• Polarized, Wide Operating Range — Polarized electrolytic capacitor with an operating temperature range of −25°C to +105°C and capacitance tolerance of −20% to +20%.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supply bulk smoothing — Bulk capacitance and 400 V rating make this capacitor suitable for smoothing and energy storage in medium‑voltage DC power supplies.
• Industrial power electronics — Useful for DC link or filtering roles in inverters, motor drives and industrial converters where elevated temperature endurance is required.
• Backup and UPS systems — Provides medium‑term energy storage and ripple handling in uninterruptible power supplies and backup power modules.

Unique Advantages

• Compact high‑voltage solution: 180 µF at 400 V in a φ30 × 25 mm can reduces board area compared with multiple smaller parts.
• Designed for high‑temperature endurance: Rated to sustain ripple current for 2000 hours at 105°C, supporting reliable operation in thermally demanding environments.
• Robust ripple handling across frequencies: Specified ripple current values at 120 Hz and 50 kHz allow designers to quantify thermal and current handling for both mains and high‑frequency applications.
• Snap‑in mounting for secure assembly: Snap‑in terminals provide a mechanically secure PCB attachment suited to vibration and high‑stress power assemblies.
• Overvoltage safety consideration: Engineered to reduce short incidence under rated ×1.5 overvoltage conditions, with defined safety performance in the datasheet.
• RoHS compliance: Meets applicable RoHS directives for environmentally conscious designs.

Why Choose LAR2G181MELB25?

The LAR2G181MELB25 balances high voltage, substantial capacitance and compact packaging for designers needing reliable bulk energy storage and filtering in 400 V systems. Its 105°C endurance rating and specified ripple current performance let engineers size thermal and lifetime margins with confidence.

Ideal for power supplies, industrial converters and backup power designs, this Nichicon LAR series snap‑in capacitor offers a practical combination of electrical performance, safety‑focused design features and regulatory compliance for long‑term use in demanding environments.

Request a quote or contact sales to discuss lead times, volume pricing and application details for LAR2G181MELB25.