LGC2H391MELB45

The LGC2H391MELB45 is an aluminum electrolytic capacitor in a snap‑in terminal, radial can package designed for general‑purpose use. It delivers 390 µF at a 500 V rated voltage with long‑life performance up to 105°C, and is offered in an ultra‑smaller case size (one rank smaller than the LGX series) to support equipment downsizing.

Its combination of high voltage rating, compact 30 × 45 mm footprint (L: 4.5 × D: 3 cm), and 105°C endurance makes it suitable for assemblies requiring polarized, high‑voltage capacitance with secure snap‑in mounting. The part is RoHS compliant.

Key Features

• Electrical Performance — 390 µF capacitance at a 500 V rated voltage with ±20% tolerance (at 120 Hz, 20°C); polarized design for typical DC energy storage and filtering roles.
• High‑temperature Long Life — Rated for operation from −40°C to +105°C with a guaranteed endurance characterization when subjected to DC bias plus rated ripple current for 5000 hours at 105°C.
• Ripple Current Capability — Rated ripple current of 1.85 A at 120 Hz for this 30 × 45 mm case; frequency coefficient data provided (120 Hz = 1.00, 50 kHz ≈ 1.43) for scaling ripple performance at other frequencies.
• Leakage and Loss Characteristics — Leakage current specified as I ≤ 3√(C·V) μA after 5 minutes at 20°C; tangent of loss angle (tan δ) ≤ 0.25 at 120 Hz, 20°C.
• Compact, Snap‑in Packaging — Radial, can ‑ snap‑in construction in a 30 × 45 mm case (L: 4.5 × D: 3 cm) designed for secure board mounting and space‑constrained assemblies; one rank smaller than LGX.
• Stability and Reliability Specs — Low‑temperature impedance ratio Z(−25°C)/Z(+20°C) ≤ 8 at 120 Hz; shelf life and endurance criteria defined in the datasheet to ensure recovery after storage and application.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose equipment — Provides bulk capacitance and energy storage for a wide range of industrial and electronic systems where a polarized, high‑voltage capacitor is required.
• Compact / downsized systems — One rank smaller case than the LGX series makes this part suited for equipment redesigns targeting smaller enclosures and tighter board layouts.
• High‑temperature environments — Specified for continuous operation up to 105°C with a defined 5000‑hour endurance profile, supporting applications that operate at elevated temperatures.
• Snap‑in assembly installations — Snap‑in terminal type for secure mechanical retention in power assemblies and enclosures that require robust mounting.

Unique Advantages

• High voltage capability: 500 V rating enables use in higher‑voltage circuits without series stacking, simplifying design.
• Long life at elevated temperature: Endurance characterized at 105°C for 5000 hours, supporting reliability targets in warmer operating environments.
• Compact footprint for downsizing: One rank smaller case than LGX and a 30 × 45 mm physical size helps reduce enclosure and board area.
• Defined ripple performance: Rated ripple current of 1.85 A at 120 Hz with frequency coefficients provided for higher frequencies, allowing predictable thermal and lifetime planning.
• Measured electrical limits: Leakage current formula (I ≤ 3√(C·V) μA) and tan δ ≤ 0.25 are specified for accurate electrical modeling and margining.
• RoHS compliance: Conforms to applicable RoHS directives for regulatory and environmental consistency in product designs.

Why Choose LGC2H391MELB45?

The LGC2H391MELB45 positions itself as a compact, high‑voltage aluminum electrolytic capacitor engineered for long‑term operation at elevated temperatures. With a 500 V rating, 390 µF capacitance, snap‑in mounting and a 105°C endurance profile, it addresses designs that require reliable polarized capacitance in reduced‑size form factors.

This part suits engineers and procurement teams developing general‑purpose electronic equipment that must balance high voltage, thermal endurance and board‑level space constraints. Backed by clear datasheet parameters for leakage, loss angle, ripple coefficients and RoHS compliance, it supports predictable integration and long‑term product robustness.

Request a quote or submit a procurement inquiry to receive pricing, lead‑time information and availability for the LGC2H391MELB45. Our team can provide the datasheet details and help confirm fit for your design requirements.