LAR2G181MELA30

The LAR2G181MELA30 is an aluminum electrolytic capacitor from Nichicon’s LAR series, featuring a snap‑in terminal radial can package and a 400 V rated voltage with 180 µF capacitance. It is designed for general‑purpose, high‑voltage applications that require robust ripple handling and elevated temperature endurance.

Key value propositions include rated ripple endurance at elevated temperature, a compact φ25×30 mm footprint, and safety features that reduce short incidence under overvoltage conditions. The part is RoHS compliant.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance.
• Snap‑In Radial Package — Radial, can type with snap‑in terminals for secure mounting on power boards.
• High‑Temperature Endurance — Withstands 2,000 hours of rated ripple current at 105°C when used within rated conditions.
• Ripple Current Performance — Rated ripple current of 950 mA at 120 Hz and 1.359 A at 50 kHz (high‑frequency rating).
• Frequency Coefficient for Ripple — LAR series frequency coefficient for 400/450 V parts reaches up to 1.43 at 50 kHz and above, enabling improved ripple handling at higher frequencies.
• Safety / Overvoltage Behavior — Designed to reduce short incidence when subjected to overvoltage (rated voltage × 1.5); series testing shows more than 60% passing under limited‑current overvoltage conditions (1 A limit) without short or flame for the test interval.
• Leakage Current Specification — Leakage current after 5 minutes at 20°C follows I ≤ 3√(C·V) µA (C in µF, V in V), per the datasheet formula.
• Operating Range — Rated for operation from −25°C to +105°C (for 400 V and 450 V ratings).
• RoHS Compliance — Conforms to RoHS directive requirements (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑Purpose High‑Voltage Circuits — Provides bulk capacitance and ripple handling for circuits operating up to 400 V where reliable DC smoothing is required.
• Power Supply Filtering — Suited for bulk and smoothing roles in power conversion stages that need elevated temperature endurance and specified ripple current capability.
• Industrial Power Electronics — Appropriate for industrial equipment designs that demand sustained performance at 105°C and resistance to overvoltage stress.

Unique Advantages

• Proven High‑Temperature Endurance: 2,000 hours of rated ripple current endurance at 105°C provides predictable life performance in elevated temperature environments.
• Enhanced Ripple Capacity: Specified ripple current values (950 mA @ 120 Hz; 1.359 A @ 50 kHz) and frequency coefficients up to 1.43 improve thermal and electrical headroom at higher switching frequencies.
• Snap‑In Mechanical Reliability: Radial snap‑in mounting offers secure board installation for larger bulk capacitors used on power PCBs.
• Overvoltage Mitigation: Series design reduces incidence of shorting under 1.5× rated voltage test conditions, supporting safer behavior under fault or transient events.
• Clear Electrical Parameters: Leakage current defined by the datasheet formula and specified tan δ limits allow predictable selection for design and verification.
• Regulatory Compliance: RoHS conformity simplifies regulatory acceptance for industrial and commercial products.

Why Choose LAR2G181MELA30?

LAR2G181MELA30 combines a high 400 V rating with substantial capacitance (180 µF) in a compact φ25×30 mm snap‑in can, offering designers a durable option for high‑voltage, high‑temperature applications. The part’s 2,000‑hour ripple endurance at 105°C and specified high‑frequency ripple capability make it suitable for designs where sustained ripple loading and thermal reliability are required.

This capacitor is positioned for engineers and procurement teams building robust power electronics and industrial systems that require verifiable performance, clear leakage and tan δ parameters, and RoHS compliance from a Nichicon LAR series part.

Request a quote or submit a specification inquiry for LAR2G181MELA30 to receive pricing, availability, and technical support for integration into your design.