LGU2Z331MELY Equivalent & Substitute Parts

Part Overview

The LGU2Z331MELY is a 330 µF, 180 V aluminum electrolytic capacitor manufactured by Nichicon in the LGU series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable performance across industrial temperature ranges. With a rated lifetime of 3000 hours at 105°C and operating temperature range of -40°C to 105°C, this component serves as a primary filtering and energy storage element in power supply circuits and similar applications. The part is currently in active production status with ROHS3 compliance and REACH unaffected certification.

Substitute parts are necessary when the primary part number becomes unavailable due to supply chain constraints, inventory depletion, or manufacturing discontinuation, while maintaining identical electrical performance and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

LGU2Z331MELY

NichiconIn Stock: 1176LGU2Z331MELY Datasheet

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LGU2Z331MELZ

NichiconIn Stock: 1270LGU2Z331MELZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGU2Z331MELY is determined by strict equivalence across the following critical parameters:

• Electrical Equivalence: Capacitance value (330 µF), rated voltage (180 V), and tolerance (±20%) must be identical
• Performance Equivalence: Lifetime rating (3000 Hrs @ 105°C), operating temperature range (-40°C ~ 105°C), and ripple current specifications (1.2 A @ 120 Hz, 1.8 A @ 50 kHz) must match
• Mechanical Compatibility: Lead spacing (0.394" / 10.00 mm), mounting type (Through Hole), and package style (Radial, Can - Snap-In) must be identical
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status must be maintained

The LGU2Z331MELZ meets all substitution criteria and is classified as a direct equivalent part.

Parameter Comparison

Engineering Selection Recommendations

Both the LGU2Z331MELY and LGU2Z331MELZ are active production parts from Nichicon with identical electrical and performance specifications. Selection between these two parts should be based on:

• Physical Space Constraints: The LGU2Z331MELZ has a smaller overall footprint (0.866" diameter, 0.984" height) compared to the LGU2Z331MELY (0.787" diameter, 1.181" height). Verify PCB layout clearances before substitution.
• Regulatory Requirements: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying equivalent environmental and safety standards.
• Supply Chain Availability: Both parts are in active inventory. Selection should prioritize availability and lead time requirements for your application timeline.

Frequently Asked Questions (FAQ)

Q: Can LGU2Z331MELZ be used as a direct replacement for LGU2Z331MELY?

A: Yes, provided that physical space constraints on the PCB accommodate the dimensional differences. The LGU2Z331MELZ has a larger diameter (22.00 mm vs. 20.00 mm) but shorter height (25.00 mm vs. 30.00 mm). All electrical and performance parameters are identical.

Q: What are the critical parameters that determine substitution eligibility?

A: Capacitance (330 µF), rated voltage (180 V), tolerance (±20%), lifetime rating (3000 Hrs @ 105°C), operating temperature range (-40°C ~ 105°C), ripple current specifications, lead spacing (10.00 mm), and package style (Radial, Can - Snap-In) must all match exactly.

Q: Are there any compliance differences between the two parts?

A: No. Both LGU2Z331MELY and LGU2Z331MELZ are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What should be verified before implementing a substitution?

A: Confirm that the PCB layout accommodates the physical dimensions of the substitute part, particularly the diameter and height. Verify that the snap-in mounting mechanism is compatible with your board design.