LGU2F391MELB Equivalent & Substitute Parts

Part Overview

The LGU2F391MELB is a 390 µF, 315 V aluminum electrolytic capacitor manufactured by Nichicon in a radial, can snap-in package. This component is designed for general-purpose applications requiring stable capacitance performance across extended operating temperatures from -25°C to 105°C. The part maintains active product status with 1,288 units currently in stock. Equivalent and substitute parts are identified when design requirements necessitate enhanced voltage ratings, extended operational lifetime, or improved ripple current handling while maintaining identical physical dimensions and electrical characteristics.

Substiute Parts

LGU2F391MELB

NichiconIn Stock: 1366LGU2F391MELB Datasheet

Current PartRFQ

400VXH390MEFCSN30X35

RubyconIn Stock: 274007400VXH390MEFCSN30X35 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGU2F391MELB is determined by strict adherence to the following parameters:

• Capacitance value: 390 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Lead spacing: 0.394" (10.00 mm) (exact match required)
• Physical dimensions: 1.181" Dia (30.00 mm) and 1.457" (37.00 mm) height (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Substitute parts may exceed the rated voltage and operational lifetime specifications of the main part, provided all mechanical and electrical parameters listed above remain identical. The Rubycon 400VXH390MEFCSN30X35 qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the LGU2F391MELB and 400VXH390MEFCSN30X35 maintain active product status and full compliance with ROHS3 and REACH regulations. The Rubycon 400VXH390MEFCSN30X35 provides enhanced performance characteristics through increased voltage rating (400 V versus 315 V) and extended operational lifetime (5000 Hrs @ 105°C versus 3000 Hrs @ 105°C). Selection between these components depends on circuit voltage requirements and expected service life demands. Both components are mechanically and electrically interchangeable within their respective voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can the 400VXH390MEFCSN30X35 be used in place of the LGU2F391MELB?

A: Yes. The Rubycon 400VXH390MEFCSN30X35 is a direct mechanical and electrical substitute. Identical capacitance (390 µF), tolerance (±20%), lead spacing (10.00 mm), physical dimensions (30.00 mm diameter, 37.00 mm height), and package type (Radial, Can - Snap-In) ensure compatibility. The higher voltage rating (400 V) and extended lifetime (5000 Hrs @ 105°C) represent performance enhancements.

Q: What are the critical parameters for substitution?

A: Substitution requires exact matching of capacitance value, tolerance, lead spacing, physical dimensions, package type, and mounting configuration. Voltage rating and operational lifetime may exceed the original specification.

Q: Are there any compliance differences between these parts?

A: Both components are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: What is the physical footprint compatibility?

A: Both parts share identical lead spacing (10.00 mm), diameter (30.00 mm), and maximum seated height (37.00 mm). PCB layout and mounting hardware remain unchanged during substitution.