LGR2G151MELA40

The LGR2G151MELA40 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGR series, offering 150 µF capacitance at a 400 V rating. It is part of the 105°C long-life assurance family designed for general-purpose use.

With long-life endurance and defined ripple handling across frequencies, this capacitor is specified for applications that require high-voltage energy storage and reliable smoothing under elevated temperature conditions.

Key Features

• Rated Capacitance & Voltage: 150 µF capacitance at a 400 V rated voltage, suitable for high-voltage DC energy storage and smoothing in general-purpose designs.
• Long-Life Endurance: Designed to withstand 10,000 hours at 105°C when subjected to DC bias plus rated ripple current; capacitance change remains within ±25% after endurance testing.
• High Temperature Operating Range: Operating temperature range of −25°C to +105°C, supporting elevated-temperature environments associated with power electronics.
• Ripple Current Capability: Rated ripple current of 820 mA at 120 Hz and 1.173 A at 50 kHz; frequency coefficient examples include 1.00 at 120 Hz and ~1.43 at 50 kHz for the 400 V class.
• Electrical Stability: Capacitance tolerance ±20% (at 120 Hz, 20°C) and leakage current specified as I ≤ 3√(C·V) μA after 5 minutes at 20°C, enabling predictable design margins.
• Package & Mounting: Radial can with snap-in terminals for secure PCB mounting; terminal snap-in style supports robust mechanical retention in power assemblies.
• RoHS Compliant: Manufactured in compliance with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General Purpose: For general-purpose circuits that specify a 150 µF, 400 V polar aluminum electrolytic capacitor with snap-in mounting.
• High-voltage DC Filtering and Smoothing: Energy storage and smoothing in high-voltage DC circuits where a 400 V rating and defined ripple current handling are required.
• Industrial Power Electronics: Power supply and converter stages operating up to 105°C continuous ambient where long-life endurance is needed.

Unique Advantages

• Long operational life: Endurance rating of 10,000 hours at 105°C provides predictable aging characteristics for sustained deployments.
• High-voltage capability: 400 V rating enables use in higher-voltage DC rails without additional stacking or complexity.
• Frequency-adaptable ripple handling: Ripple current coefficients across frequency (e.g., 1.00 at 120 Hz, ~1.43 at 50 kHz) allow designers to estimate ripple performance across switching and line-frequency domains.
• Measurable leakage and loss limits: Leakage current defined by I ≤ 3√(C·V) μA and tan δ limits (max. 0.15 for up to 400 V at 20°C, 120 Hz) support predictable electrical behavior in filter networks.
• Secure snap-in mounting: Radial, snap-in can package provides robust mechanical retention for power-board assemblies.
• Regulatory compliance: RoHS-compliant construction aligns with restricted-substance requirements.

Why Choose LGR2G151MELA40?

The LGR2G151MELA40 combines a high 400 V rating, 150 µF capacitance and 105°C long-life assurance into a snap-in aluminum electrolytic package tailored for general-purpose and high-voltage power applications. Its defined ripple current performance and endurance characterization make it a practical choice where long-term stability and predictable aging are required.

This part is well-suited for designers and procurement teams specifying robust capacitors for power supplies, DC link smoothing, and other high-voltage energy storage roles that require RoHS-compliant components and clear, test-backed performance metrics.

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