LGL2G681MELB45

The LGL2G681MELB45 is an aluminum electrolytic capacitor in a snap-in terminal (radial, can) format designed for general-purpose applications. It delivers 680 µF capacitance at a 400 V rating with an elevated operating temperature rating of 105°C and is offered in an ultra-smaller-sized φ30 × 45L package intended for tray packing and mass production.

This part targets designs that need high-capacitance, high-voltage bulk storage in a compact snap-in package while providing defined endurance and ripple-current performance for reliable operation in demanding temperature environments.

Key Features

• Electrical rating — 680 µF capacitance with a 400 V rated voltage for high-voltage bulk energy storage.
• Operating temperature & endurance — Specified for −25 °C to +105 °C with endurance of 2000 hours at 105 °C under D.C. bias plus rated ripple current per the datasheet.
• Package & mounting — Snap-in terminal, radial can in an ultra-smaller-sized φ30 × 45L package (L: 4.5 × D: 3 cm) designed for tray packing and high-volume production.
• Capacitance tolerance — ±20% tolerance at 120 Hz, 20 °C.
• Leakage current — Specified leakage limit I ≤ 3√CV (µA) after 5 minutes’ application of rated voltage at 20 °C, per the datasheet.
• Dissipation factor (tan δ) — Maximum tan δ of 0.15 at 400 V measured at 120 Hz, 20 °C.
• Ripple current capability — Rated ripple currents include 1.74 A at 120 Hz and 2.488 A at 50 kHz; frequency coefficient of rated ripple current increases up to 1.43 at 50 kHz and above for the 400–450 V range.
• Polarized device — Designed for polarized circuit use and appropriate polarity handling.

Typical Applications

• General-purpose power designs — Suited for circuits that require 680 µF at 400 V and operation at elevated temperatures up to 105 °C.
• Bulk energy storage in compact assemblies — The ultra-smaller-sized φ30 × 45L snap-in package supports high-density layouts while providing high-voltage capacitance.
• High-temperature environments — Applications that demand stable performance and endurance at up to 105 °C benefiting from the 2000-hour endurance rating.

Unique Advantages

• High-voltage capability: 400 V rating supports designs that require elevated DC voltage tolerance without increasing capacitance count.
• Compact snap-in packaging: φ30 × 45L radial can and snap-in terminals simplify board mounting and enable denser power assemblies.
• Designed for elevated temperatures: Rated to 105 °C with a 2000-hour endurance specification for reliable long-term operation under thermal stress.
• Defined ripple performance: Measured ripple currents at 120 Hz and 50 kHz with frequency coefficients provided, enabling predictable behavior across frequency ranges.
• Measurable leakage and dissipation limits: Leakage current limited by I ≤ 3√CV and tan δ maximum specified, aiding in predictable loss and leakage budgeting.

Why Choose LGL2G681MELB45?

The LGL2G681MELB45 positions itself as a reliable, high-capacitance solution for general-purpose designs that require a 400 V rating and sustained performance at elevated temperatures. Its snap-in, ultra-smaller-sized φ30 × 45L package combines compactness with robust ripple and endurance specifications to support high-volume, production-focused assemblies.

This part is suited to engineers specifying high-voltage bulk capacitance with clear, datasheet-backed limits for leakage, dissipation, ripple current, and endurance—making it a practical option for designs where predictable electrical and thermal behavior matter.

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