LGN2P391MELY35 Equivalent & Substitute Parts

Part Overview

The LGN2P391MELY35 is a 390 µF, 220 V aluminum electrolytic capacitor manufactured by Nichicon in the LGN series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance performance across extended operating temperatures (-40°C to 105°C) with a rated lifetime of 3000 hours at 105°C. The part is currently active in production and fully compliant with RoHS3 and REACH regulations. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative series options better suit specific application requirements.

Substiute Parts

LGN2P391MELY35

NichiconIn Stock: 1191LGN2P391MELY35 Datasheet

Current PartRFQ

LGU2P391MELY

NichiconIn Stock: 867LGU2P391MELY Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGN2P391MELY35 is determined by strict equivalence across the following critical parameters:

• Capacitance value: 390 µF (exact match required)
• Rated voltage: 220 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Lead spacing: 0.394" (10.00 mm) (exact match required)
• Diameter: 0.787" (20.00 mm) (exact match required)

The LGU2P391MELY qualifies as a direct substitute based on full alignment with all critical electrical and mechanical parameters. Variations in height, ripple current ratings, and series designation do not preclude substitution when the above parameters are maintained.

Parameter Comparison

Engineering Selection Recommendations

Both the LGN2P391MELY35 and LGU2P391MELY are active production parts from Nichicon with full RoHS3 and REACH compliance. Selection between these parts should be based on:

• PCB layout constraints: The LGU2P391MELY has a maximum seated height of 1.772" (45.00 mm) compared to 1.457" (37.00 mm) for the LGN2P391MELY35. Verify available vertical clearance in the target application before substitution.
• Ripple current performance: The LGU2P391MELY provides marginally higher ripple current ratings (1.4 A @ 120 Hz and 2.1 A @ 50 kHz) compared to the main part (1.34 A @ 120 Hz and 2.01 A @ 50 kHz). This difference is within normal manufacturing variation for this capacitor class.
• Inventory and lead time: Both parts are in active stock. Selection may be driven by availability and procurement timelines.

Frequently Asked Questions (FAQ)

Q: Can the LGU2P391MELY be used as a direct replacement for the LGN2P391MELY35?

A: Yes, the LGU2P391MELY qualifies as a direct substitute. All critical electrical parameters (capacitance, voltage rating, tolerance, and operating temperature range) are identical. The primary design consideration is the increased height (45.00 mm vs. 37.00 mm), which must be verified against available PCB clearance.

Q: What is the difference between the LGN and LGU series?

A: Both series are Nichicon aluminum electrolytic capacitors with identical electrical specifications for this capacitance and voltage rating. The series designation reflects internal design or manufacturing process variations that do not affect functional equivalence for general-purpose applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS3 and REACH compliance certifications and are classified as active production parts.

Q: Does the height difference affect electrical performance?

A: No. The height variation reflects physical package design but does not alter capacitance, voltage rating, tolerance, temperature performance, or lifetime specifications. Height is a mechanical constraint relevant only to PCB layout compatibility.

Q: What ripple current should be used for circuit design?

A: Use the ripple current specification of the part selected for your design. The LGN2P391MELY35 is rated for 1.34 A @ 120 Hz and 2.01 A @ 50 kHz. The LGU2P391MELY is rated for 1.4 A @ 120 Hz and 2.1 A @ 50 kHz. Both values are suitable for general-purpose applications within their respective thermal and electrical limits.

Q: Can these capacitors be used interchangeably on the same PCB without design changes?

A: Electrical substitution is direct. Mechanical substitution requires verification of available height clearance. If the PCB layout accommodates the taller LGU2P391MELY (45.00 mm seated height), no design changes are necessary. If vertical space is constrained to 37.00 mm or less, the LGN2P391MELY35 must be retained.