Equivalent & Substitute Parts for LGU2F181MELZ

Part Overview

The LGU2F181MELZ is a 180 µF, 315 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 is designed for general-purpose applications requiring stable capacitance and ripple current handling. The part is currently active and in stock. Alternative equivalent and upgrade options are available to accommodate different design requirements, physical constraints, or performance specifications.

Key Parameters

Parameter	Value
Capacitance	180 µF
Voltage Rating	315 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°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 for the LGU2F181MELZ is determined by the following critical parameters: capacitance value (180 µF), voltage rating (315 V or higher), tolerance (±20%), polarization (polar), lead spacing (10.00 mm), and package type (radial, can snap-in). Parts meeting these specifications are electrically and mechanically compatible.

The substitute parts are grouped into two categories:

Equivalent Substitutes maintain identical electrical specifications (180 µF, 315 V) and physical compatibility. These parts differ only in physical dimensions (diameter and height) while preserving the 10.00 mm lead spacing and snap-in mounting interface.

Upgrade Substitute provides higher voltage rating (400 V) with identical capacitance and physical dimensions to the main part, offering enhanced voltage margin for the same form factor.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Diameter	Height (Max)	Lead Spacing	Lifetime @ 105°C	RoHS Status	Inventory
LGU2F181MELZ	Nichicon	180 µF	315 V	±20%	0.866" (22.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	3000 Hrs	ROHS3	1149 Pcs
LGU2F181MELA	Nichicon	180 µF	315 V	±20%	0.984" (25.00 mm)	1.063" (27.00 mm)	0.394" (10.00 mm)	3000 Hrs	ROHS3	922 Pcs
LGU2F181MELY	Nichicon	180 µF	315 V	±20%	0.787" (20.00 mm)	1.654" (42.00 mm)	0.394" (10.00 mm)	3000 Hrs	ROHS3	1010 Pcs
400MXG180MEFCSN22X35	Rubycon	180 µF	400 V	±20%	0.866" (22.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	3000 Hrs	ROHS3	1401 Pcs

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component applications.

LGU2F181MELA and LGU2F181MELY are direct electrical equivalents to the main part, differing only in physical dimensions. Selection between these and the main part depends on available PCB space. The LGU2F181MELA offers a wider, shorter profile (25.00 mm diameter, 27.00 mm height), while the LGU2F181MELY provides a narrower, taller profile (20.00 mm diameter, 42.00 mm height).

400MXG180MEFCSN22X35 (Rubycon MXG series) is an upgrade option that maintains identical physical dimensions to the main part (22.00 mm diameter, 37.00 mm height) while providing 400 V voltage rating instead of 315 V. This part is suitable for applications requiring higher voltage margin or where 400 V rated components are specified. The higher voltage rating does not affect mechanical or electrical compatibility in circuits designed for 315 V operation.

Frequently Asked Questions (FAQ)

Q: Can LGU2F181MELA or LGU2F181MELY be used as direct replacements for LGU2F181MELZ?

A: Yes. All three parts share identical electrical specifications (180 µF, 315 V, ±20% tolerance, 3000 Hrs @ 105°C) and lead spacing (10.00 mm). They differ only in physical dimensions (diameter and height). Selection depends on available PCB space and mounting clearance requirements.

Q: What is the difference between the Nichicon LGU series substitutes and the Rubycon 400MXG180MEFCSN22X35?

A: The Rubycon part provides 400 V voltage rating compared to 315 V for the Nichicon parts. All other electrical parameters (180 µF capacitance, ±20% tolerance, 3000 Hrs @ 105°C) and physical dimensions (22.00 mm diameter, 37.00 mm height, 10.00 mm lead spacing) are identical to the main part. The higher voltage rating provides additional safety margin in high-voltage applications.

Q: Are all substitute parts through-hole mounted with snap-in packaging?

A: Yes. All parts listed use through-hole mounting with radial, can-style snap-in packaging and 10.00 mm lead spacing, ensuring compatibility with standard PCB snap-in receptacles.

Q: Do physical dimension differences affect circuit performance?

A: No. Physical dimensions (diameter and height) do not affect electrical performance. Differences in ripple current ratings between parts reflect manufacturing variations within the ±20% tolerance specification and do not indicate performance degradation.

Q: Are all parts RoHS compliant?

A: Yes. All parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

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