LAR2E681MELB30

The LAR2E681MELB30 is a snap-in terminal aluminum electrolytic capacitor designed for general-purpose power applications. It combines a 680 µF capacitance with a 250 V rated voltage in a φ30×30L radial can (3 × 3 cm) snap-in package.

Engineered for elevated-temperature operation, this device is specified for use from −40 °C to 105 °C and is capable of withstanding 2000 hours of rated ripple-current application at 105 °C, offering reliability for demanding thermal and ripple conditions.

Key Features

• Capacitance & Voltage: 680 µF at 250 V nominal, with ±20% tolerance (measured at 120 Hz, 20 °C).
• High-temperature endurance: Rated to operate from −40 °C to 105 °C and verified for 2000 hours of rated ripple current at 105 °C.
• Snap-in radial can package: Snap-in terminal type in a φ30×30L radial can (3 × 3 cm) for robust board mounting and high-current connections.
• Ripple current capability: Specified ripple current values include 1.7 A at 120 Hz and 2.55 A at 50 kHz; frequency coefficients apply (1.00 at 120 Hz and up to 1.50 at ≥50 kHz for 200/250 V series values).
• Leakage current specification: Leakage current guaranteed as I ≤ 3√(C·V) μA after 5 minutes at 20 °C (C = µF, V = V).
• Dissipation factor (tan δ): Meets series limits with tan δ max. of 0.15 for 200–400 V types at 120 Hz, 20 °C.
• Safety performance under overvoltage: Designed to reduce incidence of shorting when subjected to 1.5 × rated voltage; pressure-relief behavior specified under test conditions.
• RoHS compliant: Compliant with RoHS directives (2011/65/EU, (EU)2015/863).
• Polarized device: Polarized electrolytic construction for DC applications.

Typical Applications

• General-purpose power filtering: Bulk smoothing and ripple reduction in power supply rails where 250 V rating and high ripple endurance are required.
• High-temperature power assemblies: Use in modules and assemblies that must operate reliably up to 105 °C and endure continuous ripple stress.
• PCB snap-in assemblies: Through-hole, snap-in mounting for robust mechanical retention and simplified board insertion in power electronics enclosures.

Unique Advantages

• Long ripple-endurance at elevated temperature: Specified for 2000 hours at 105 °C under rated ripple current, supporting reliable operation in thermally demanding designs.
• Overvoltage safety behavior: Reduced short incidence under 1.5× rated voltage with defined pressure-relief performance, improving circuit-level safety margins.
• Frequency-aware ripple capability: Ripple current performance and provided frequency coefficients allow designers to size capacitors for a range of switching and ripple frequencies.
• Board-ready snap-in format: Radial snap-in can simplifies mechanical assembly and creates a strong electrical connection for high-current paths.
• Clear electrical limits and diagnostics: Published leakage current formula and dissipation factor limits enable predictable behavior and straightforward verification in production.
• Regulatory compliance: RoHS compliance supports use in regions requiring restricted-substance conformity.

Why Choose LAR2E681MELB30?

The LAR2E681MELB30 positions itself as a reliable choice for designers needing a high-voltage, high-capacitance, snap-in aluminum electrolytic capacitor capable of sustained ripple stress at elevated temperatures. Its combination of 680 µF at 250 V, verified 2000-hour endurance at 105 °C, and overvoltage safety behavior make it suitable for general-purpose power applications and assemblies requiring robust thermal and ripple performance.

This part is well-suited for engineers and procurement teams specifying through-hole, snap-in capacitors for power filtering, smoothing, and energy-storage tasks where manufacturability and predictable electrical limits are important. Its RoHS compliance and clear datasheet parameters support long-term sourcing and qualification efforts.

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