Equivalent & Substitute Parts for LGN2E331MELZ30

Part Overview

The LGN2E331MELZ30 is a 330 µF, 250 V aluminum electrolytic capacitor manufactured by Nichicon in the LGN series. This radial, can-style snap-in capacitor is rated for 3000 hours at 105°C and is designed for general-purpose applications requiring stable capacitance and ripple current handling. The part is active and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative mechanical configurations are required.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	250 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LGN2E331MELZ30 is determined by strict equivalence in the following electrical parameters: capacitance (330 µF), voltage rating (250 V), tolerance (±20%), polarization (polar), and lead spacing (10.00 mm). All substitute parts maintain identical electrical specifications and through-hole mounting configuration.

Mechanical variations in can diameter and height are permitted within the snap-in package family, provided the lead spacing remains constant and the part fits within the intended PCB footprint. Lifetime ratings of 3000 hours at 105°C are maintained across all Nichicon LGN, LGW, and LGU series substitutes. The Rubycon MXG series and Cornell Dubilier 381LQ series provide cross-manufacturer equivalents with identical electrical ratings and package compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Can Diameter	Height (Max)	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	Status
LGN2E331MELZ30	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs	0.866" (22.00 mm)	1.260" (32.00 mm)	1.2 A	1.8 A	Active
LGW2E331MELZ30	Nichicon	LGW	330 µF	250 V	±20%	3000 Hrs	0.866" (22.00 mm)	1.181" (30.00 mm)	1.8 A	2.7 A	Active
LGN2E331MELA25	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs	0.984" (25.00 mm)	1.063" (27.00 mm)	1.2 A	1.8 A	Active
LGN2E331MELY35	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs	0.787" (20.00 mm)	1.457" (37.00 mm)	1.2 A	1.8 A	Active
LGU2E331MELA	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	0.984" (25.00 mm)	1.181" (30.00 mm)	1.3 A	1.95 A	Active
LGU2E331MELB	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	1.181" (30.00 mm)	0.984" (25.00 mm)	1.3 A	1.95 A	Active
LGU2E331MELY	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	0.787" (20.00 mm)	1.575" (40.00 mm)	1.2 A	1.8 A	Active
LGU2E331MELZ	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	0.866" (22.00 mm)	1.575" (40.00 mm)	1.3 A	1.95 A	Active
LGW2E331MELA25	Nichicon	LGW	330 µF	250 V	±20%	3000 Hrs	0.984" (25.00 mm)	0.984" (25.00 mm)	1.8 A	2.7 A	Active
250MXG330MEFCSN22X30	Rubycon	MXG	330 µF	250 V	±20%	3000 Hrs	0.866" (22.00 mm)	1.260" (32.00 mm)	1.51 A	2.265 A	Active
381LQ331M250H022	Cornell Dubilier Electronics (CDE)	381LQ	330 µF	250 V	±20%	2000 Hrs	0.866" (22.00 mm)	1.260" (32.00 mm)	1.2 A	1.68 A	Active

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Within the Nichicon family, the LGW series (LGW2E331MELZ30, LGW2E331MELA25) provides enhanced ripple current handling at 1.8 A @ 120 Hz and 2.7 A @ 50 kHz compared to the LGN base specification. The LGU series (LGU2E331MELA, LGU2E331MELB, LGU2E331MELY, LGU2E331MELZ) offers intermediate ripple current performance at 1.3 A @ 120 Hz and 1.95 A @ 50 kHz with varied mechanical configurations.

The Rubycon 250MXG330MEFCSN22X30 provides identical mechanical dimensions and electrical ratings to the LGN2E331MELZ30 with enhanced ripple current capability. Operating temperature range is -25°C to 105°C, narrower than the Nichicon -40°C specification.

The Cornell Dubilier 381LQ331M250H022 maintains identical mechanical form factor and electrical ratings but specifies a reduced lifetime of 2000 hours at 105°C compared to the 3000-hour standard. ESR is specified at 502 mOhm @ 120 Hz.

Selection should prioritize mechanical fit within the PCB layout, ripple current requirements of the application, and operating temperature range constraints.

Frequently Asked Questions (FAQ)

Q: Can LGW2E331MELZ30 replace LGN2E331MELZ30 directly?

A: Yes. Both parts share identical electrical specifications (330 µF, 250 V, ±20%, 3000 Hrs @ 105°C) and lead spacing (10.00 mm). The LGW variant is 0.079" (2.00 mm) shorter in height (1.181" vs. 1.260"), which may require PCB layout verification to confirm clearance compatibility.

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

A: All three series maintain the same electrical ratings for the 330 µF, 250 V specification. The LGW series provides higher ripple current capability (1.8 A @ 120 Hz, 2.7 A @ 50 kHz). The LGU series offers intermediate ripple current (1.3 A @ 120 Hz, 1.95 A @ 50 kHz) with multiple mechanical configurations. Series designation reflects internal design optimization for specific performance characteristics.

Q: Is the Rubycon MXG series equivalent to Nichicon LGN?

A: The Rubycon 250MXG330MEFCSN22X30 is electrically and mechanically equivalent to LGN2E331MELZ30, with identical can diameter (22.00 mm) and height (32.00 mm). Operating temperature range differs: Rubycon specifies -25°C to 105°C versus Nichicon's -40°C to 105°C. Both are ROHS3 compliant and rated for 3000 hours at 105°C.

Q: Why does the Cornell Dubilier 381LQ have a lower lifetime rating?

A: The 381LQ331M250H022 specifies 2000 hours at 105°C versus the 3000-hour standard of other substitutes. This represents a different design approach and should be evaluated against application lifetime requirements. ESR specification (502 mOhm @ 120 Hz) is provided for this part.

Q: Can I use a taller capacitor in place of a shorter one?

A: Mechanical substitution depends on available PCB clearance above the component. Taller variants such as LGU2E331MELY (1.575" height) or LGN2E331MELY35 (1.457" height) require verification that the increased height does not interfere with adjacent components or enclosure constraints. Lead spacing (10.00 mm) remains constant across all variants.

Q: Are all substitutes through-hole mounted?

A: Yes. All listed substitutes are through-hole, radial, can-style snap-in packages with 10.00 mm lead spacing. No surface-mount variants are included in this equivalency list.

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