LGU2P331MELZ Equivalent & Substitute Parts

Part Overview

The LGU2P331MELZ is a 330 µF, 220 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance performance across extended operating temperature ranges. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when design specifications permit higher voltage ratings or alternative physical configurations.

Substiute Parts

LGU2P331MELZ

NichiconIn Stock: 779LGU2P331MELZ Datasheet

Current PartRFQ

LGN2P331MELZ25

NichiconIn Stock: 1296LGN2P331MELZ25 Datasheet

DirectRFQ

LGN2E331MELZ30

NichiconIn Stock: 802LGN2E331MELZ30 Datasheet

UpgradeRFQ

LGU2E331MELZ

NichiconIn Stock: 985LGU2E331MELZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGU2P331MELZ is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Operating Temperature Range: -40°C ~ 105°C (exact match required)
• Lifetime @ Temperature: 3000 Hrs @ 105°C (exact match required)

Secondary Substitution Criteria (Allowable Variation):

• Voltage - Rated: Equal to or greater than 220 V (uprating permitted)
• Physical Height: Variation permitted within mechanical constraints of application
• Ripple Current: Minor variations acceptable within thermal design margins

Substitute parts are classified into three categories:

Direct Substitutes: Parts meeting all primary criteria with identical voltage rating (220 V).

Upgrade Substitutes: Parts meeting all primary criteria with higher voltage rating (250 V or greater), suitable for applications where voltage margin enhancement is beneficial.

Similar Substitutes: Parts meeting all primary criteria with higher voltage rating and potential physical dimension variations, requiring mechanical fit verification.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring continued availability and regulatory conformance.

LGN2P331MELZ25 (Direct Substitute): This part is electrically and mechanically equivalent to the LGU2P331MELZ with identical voltage rating of 220 V. The primary distinction is reduced physical height (27.00 mm versus 35.00 mm), which may provide space savings in compact designs. Ripple current performance is equivalent. Selection of this part is appropriate when physical height reduction is beneficial and the application PCB layout accommodates the shorter profile.

LGN2E331MELZ30 (Upgrade Substitute): This part provides voltage uprating to 250 V while maintaining all other electrical and mechanical specifications. The 250 V rating provides enhanced voltage margin for applications operating near the 220 V nominal specification. Physical height is 32.00 mm, intermediate between the main part and direct substitute. This part is suitable for designs where voltage safety margin is prioritized.

LGU2E331MELZ (Similar Substitute): This part provides voltage uprating to 250 V and maintains the LGU series designation matching the main part. Physical height is increased to 40.00 mm, requiring verification of available mounting space. Ripple current performance is slightly elevated. This part is suitable for applications where series consistency and voltage uprating are both required, provided mechanical clearance is confirmed.

All substitute parts are manufactured by Nichicon and carry identical compliance certifications. Selection between direct, upgrade, and similar substitutes depends on application voltage requirements, available physical space, and design margin preferences.

Frequently Asked Questions (FAQ)

Q: Can LGN2P331MELZ25 be used as a direct replacement for LGU2P331MELZ?

A: Yes. Both parts share identical electrical specifications (330 µF, ±20%, 220 V, 3000 Hrs @ 105°C) and mechanical compatibility (10.00 mm lead spacing, 22.00 mm diameter, radial snap-in package, through-hole mounting). The primary difference is reduced height (27.00 mm versus 35.00 mm). Verify available PCB mounting space before selection.

Q: What is the advantage of using LGN2E331MELZ30 or LGU2E331MELZ over the original LGU2P331MELZ?

A: Both upgrade substitutes provide increased voltage rating (250 V versus 220 V), creating additional voltage safety margin in the application. This is beneficial for circuits operating near maximum rated voltage or subject to voltage transients. Electrical capacitance and temperature performance remain identical.

Q: Are there physical dimension constraints when substituting between these parts?

A: Yes. While all parts maintain 10.00 mm lead spacing and 22.00 mm diameter, physical height varies: LGN2P331MELZ25 (27.00 mm), LGN2E331MELZ30 (32.00 mm), LGU2E331MELZ (40.00 mm), and LGU2P331MELZ (35.00 mm). Verify available vertical clearance on the PCB before selecting a substitute with different height.

Q: Do all substitute parts meet the same compliance standards as the main part?

A: Yes. All listed substitute parts are ROHS3 compliant and maintain Active product status, ensuring regulatory conformance and continued manufacturing availability.

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

A: Series designation reflects Nichicon's internal product line classification. Both LGU and LGN series parts in this comparison meet identical electrical and mechanical specifications for the 330 µF, 220/250 V, snap-in package category. Series selection does not affect functional compatibility.

Q: Can ripple current differences between substitute parts affect circuit performance?

A: Ripple current variations among these substitutes are minor (1.2 A to 1.3 A @ 120 Hz; 1.8 A to 1.95 A @ 50 kHz). These differences are within normal thermal design margins for general purpose applications. Verify ripple current against application thermal requirements if operating at maximum rated current.