LLG2W271MELA40

The LLG2W271MELA40 is a snap‑in terminal type aluminum electrolytic capacitor from Nichicon's LLG series. It provides 270 µF capacitance at a 450 V rating in a compact radial, can-style snap‑in package designed to support equipment downsizing.

Intended for general-purpose electronic applications, this polarized capacitor combines high-voltage capability with defined endurance and frequency-rated ripple performance for reliable operation in designs that require a smaller case size than the LLS series.

Key Features

• Electrical Characteristics 270 µF rated capacitance with a 450 V nominal voltage and capacitance tolerance of ±20% (measured at 120 Hz, 20°C). The device is polarized.
• Ripple Current & Frequency Performance Specified ripple handling of 1.8 A at 120 Hz and 2.574 A at 100 kHz, enabling predictable performance across low and high frequency ripple environments.
• Loss Angle (tan δ) Maximum tan δ is 0.20 at the 450 V rating (measured at 120 Hz, 20°C), providing a defined dissipation characteristic for design verification.
• Temperature Range & Low‑Temperature Stability Rated for operation from –25°C to +85°C at the 400–450 V level; impedance ratio Z(–25°C)/Z(+20°C) is specified up to 8 for 400/450 V units.
• Endurance & Shelf Life Endurance specified as 2000 hours at 85°C with D.C. bias plus rated ripple current applied; after test the part must meet defined limits for capacitance change, tan δ, and leakage current. Shelf life condition: 1000 hours at 85°C followed by voltage treatment per JIS requirements.
• Package & Mounting Radial, can-style snap‑in package with snap‑in terminals; one rank smaller case size than the LLS series to support equipment downsizing. Physical dimensions: length 4 × diameter 2.5 cm; maximum seated height 1.575 inch. Marking is white letters on a black sleeve.
• Leakage Current Specification Leakage current meets the series criterion I ≤ 3√(C·V) µA after 5 minutes’ application of rated voltage at 20°C (C = µF, V = voltage).
• Environmental Compliance Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General Purpose Electronics — Suited for general-purpose designs requiring a 270 µF, 450 V polarized capacitor with snap‑in mounting.
• Equipment Downsizing — One rank smaller case than LLS makes this part appropriate where board space reduction and compact packaging are priorities.
• 450 V Power Systems — Applicable in designs that require components rated to 450 V, with specified ripple current performance at multiple frequencies.

Unique Advantages

• Compact high‑voltage solution: 450 V rating combined with a reduced case size (one rank smaller than LLS) helps preserve board space without sacrificing voltage capability.
• Defined ripple handling across frequencies: Explicit ripple current ratings at 120 Hz and 100 kHz allow designers to size components with frequency‑specific confidence.
• Quantified thermal endurance: 2000 hours at 85°C endurance specification provides measurable expectations for elevated-temperature performance.
• Predictable low‑temperature behavior: Specified impedance ratio at –25°C for 400–450 V units supports designs that must account for cold-start impedance changes.
• RoHS compliance and traceable marking: Compliant with RoHS directives and marked in white on a black sleeve for clear identification.
• Leakage current assurance: Leakage defined by the series formula I ≤ 3√(C·V) µA after rated-voltage application ensures consistent leakage expectations.

Why Choose LLG2W271MELA40?

LLG2W271MELA40 positions itself as a compact, 450 V snap‑in aluminum electrolytic capacitor for general-purpose electronic designs where space savings and defined performance matter. Its combination of 270 µF capacitance, multi-frequency ripple ratings, and a specified endurance profile make it suitable for engineers who need measurable electrical and thermal behavior from a smaller-case, snap‑in device.

This capacitor is aimed at designers and procurement teams working on high-voltage general-purpose assemblies that benefit from downsized components, clear performance specifications, and RoHS compliance, backed by Nichicon’s LLG series documentation and test criteria.

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