LGU2P331MELY Equivalent & Substitute Parts

Part Overview

The LGU2P331MELY is a 330 µF, 220 V aluminum electrolytic capacitor manufactured by Nichicon in the LGU series. This radial, can-style snap-in capacitor is rated for 3000 hours at 105°C and operates across a temperature range of -40°C to 105°C. The part is Active status and ROHS3 compliant, making it suitable for general-purpose applications requiring stable capacitance and ripple current handling.

Substitute parts become necessary when the original part reaches end-of-life, inventory constraints occur, or when design requirements allow for upgraded electrical specifications such as higher voltage ratings or improved ripple current performance.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	220 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution logic for the LGU2P331MELY is based on the following allowed parameters:

Upgrade Substitutes (Higher voltage rating, same or compatible physical footprint):

LGN2E331MELY35 and LGU2E331MELY both feature 250 V ratings, providing voltage margin above the original 220 V specification while maintaining 330 µF capacitance, ±20% tolerance, and 3000 Hrs @ 105°C lifetime. These parts are direct functional upgrades suitable for applications where higher voltage headroom is acceptable.

Similar Substitutes (Same voltage rating, different physical dimensions):

LGN2P331MELZ25 and LGU2P331MELZ maintain the 220 V rating and 330 µF capacitance but differ in physical dimensions (diameter and height). These parts are compatible where board layout permits dimensional variation while preserving electrical performance.

All substitute parts share the same capacitance value (330 µF), tolerance (±20%), operating temperature range (-40°C ~ 105°C), lead spacing (0.394" / 10.00 mm), package type (Radial, Can - Snap-In), mounting type (Through Hole), and RoHS3 compliance status.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage Rating	Tolerance	Lifetime @ Temp.	Operating Temp.	Diameter	Height (Max)	Lead Spacing	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	RoHS Status	Product Status
LGU2P331MELY	Nichicon	LGU	330 µF	220 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.787" (20.00 mm)	1.575" (40.00 mm)	0.394" (10.00 mm)	1.25 A	1.875 A	ROHS3 Compliant	Active
LGN2E331MELY35	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.787" (20.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.2 A	1.8 A	ROHS3 Compliant	Active
LGU2E331MELY	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.787" (20.00 mm)	1.575" (40.00 mm)	0.394" (10.00 mm)	1.2 A	1.8 A	ROHS3 Compliant	Active
LGN2P331MELZ25	Nichicon	LGN	330 µF	220 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.866" (22.00 mm)	1.063" (27.00 mm)	0.394" (10.00 mm)	1.26 A	1.89 A	ROHS3 Compliant	Active
LGU2P331MELZ	Nichicon	LGU	330 µF	220 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.866" (22.00 mm)	1.378" (35.00 mm)	0.394" (10.00 mm)	1.25 A	1.875 A	ROHS3 Compliant	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring continued availability and regulatory alignment with the original LGU2P331MELY.

For applications where voltage margin is required or acceptable, LGU2E331MELY and LGN2E331MELY35 provide 250 V ratings while preserving the 330 µF capacitance and thermal specifications. LGU2E331MELY maintains identical physical dimensions to the original part, facilitating direct board-level substitution.

For applications constrained to 220 V operation, LGN2P331MELZ25 and LGU2P331MELZ provide equivalent electrical performance with dimensional variations. LGN2P331MELZ25 offers a more compact profile (1.063" height), while LGU2P331MELZ provides intermediate dimensions (1.378" height).

Selection should be based on available board space, voltage headroom requirements, and ripple current specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can LGU2E331MELY be used as a direct replacement for LGU2P331MELY?

A: Yes. LGU2E331MELY maintains identical physical dimensions (0.787" diameter, 1.575" height, 0.394" lead spacing) and mounting type (Through Hole, Radial Can - Snap-In). The primary difference is the voltage rating upgrade from 220 V to 250 V, which is electrically compatible in applications designed for 220 V operation.

Q: What is the difference between upgrade and similar substitutes?

A: Upgrade substitutes (LGN2E331MELY35, LGU2E331MELY) feature higher voltage ratings (250 V vs. 220 V) while maintaining the same capacitance and thermal specifications. Similar substitutes (LGN2P331MELZ25, LGU2P331MELZ) maintain the original 220 V rating but differ in physical dimensions, requiring board layout verification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original LGU2P331MELY.

Q: Do substitute parts have the same lead spacing?

A: Yes. All substitute parts maintain 0.394" (10.00 mm) lead spacing, ensuring compatibility with existing PCB hole patterns.

Q: What are the ripple current differences between parts?

A: The original LGU2P331MELY handles 1.25 A @ 120 Hz and 1.875 A @ 50 kHz. Upgrade substitutes (LGN2E331MELY35, LGU2E331MELY) handle 1.2 A @ 120 Hz and 1.8 A @ 50 kHz. Similar substitutes maintain comparable ripple current ratings (1.25-1.26 A @ 120 Hz, 1.875-1.89 A @ 50 kHz). Application ripple current requirements should be verified against selected part specifications.

Q: Can LGN2P331MELZ25 be used in space-constrained applications?

A: LGN2P331MELZ25 offers the most compact profile at 1.063" height compared to the original 1.575" height, making it suitable for applications with vertical space limitations. However, its diameter is 0.866" (22.00 mm) versus the original 0.787" (20.00 mm), requiring horizontal space verification on the PCB.

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