LGJ2G390MELY Equivalent & Substitute Parts

Part Overview

The LGJ2G390MELY is a 39 µF, 400 V aluminum electrolytic capacitor manufactured by Nichicon in the LGJ series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring reliable energy storage and filtering in power supply circuits. The part is currently active in production with 1118 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from qualified equivalent components that meet the same electrical and mechanical specifications.

Substiute Parts

LGJ2G390MELY

NichiconIn Stock: 1144LGJ2G390MELY Datasheet

Current PartRFQ

LGJ2G390MELZ15

NichiconIn Stock: 831LGJ2G390MELZ15 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGJ2G390MELY is determined by strict equivalence across the following critical parameters:

Capacitance value must be identical at 39 µF with ±20% tolerance. Rated voltage must match at 400 V to ensure safe operation within the same circuit design. Polarization must remain polar. Package and mounting type must be radial, can-style snap-in through-hole to ensure mechanical compatibility with existing PCB layouts and lead spacing of 0.394" (10.00mm). Operating temperature range must encompass -25°C to 105°C. RoHS3 compliance and REACH unaffected status must be maintained.

The LGJ2G390MELZ15 qualifies as a direct substitute based on these parameters. While it exhibits a reduced lifetime specification (2000 Hrs @ 105°C versus 3000 Hrs @ 105°C) and slightly different physical dimensions, it maintains electrical equivalence and mechanical compatibility for applications where the extended lifetime is not a design requirement.

Parameter Comparison

Engineering Selection Recommendations

Both the LGJ2G390MELY and LGJ2G390MELZ15 maintain active production status and full compliance with ROHS3 and REACH requirements. Selection between these parts should be based on application-specific lifetime requirements. The LGJ2G390MELY is suitable for applications requiring extended operational life at elevated temperatures. The LGJ2G390MELZ15 is suitable for applications where a 2000-hour lifetime at 105°C meets design specifications. Physical dimensions differ between the two parts; PCB layout and mechanical clearance must be verified before substitution. Both parts are electrically equivalent at the rated 39 µF, 400 V specification and maintain identical lead spacing for through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can LGJ2G390MELZ15 be used as a direct replacement for LGJ2G390MELY?

A: Electrical substitution is valid when the application does not require the extended 3000-hour lifetime specification. The LGJ2G390MELZ15 provides 2000 hours at 105°C. Physical dimensions differ; verify PCB clearance before installation.

Q: What are the key differences between these two parts?

A: The primary differences are lifetime rating (3000 Hrs versus 2000 Hrs @ 105°C), physical diameter (20.00mm versus 22.00mm), and height (22.00mm versus 17.00mm). Electrical specifications for capacitance, voltage, tolerance, and temperature range are identical.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both LGJ2G390MELY and LGJ2G390MELZ15 are ROHS3 compliant and REACH unaffected.

Q: Does the difference in ripple current rating affect substitution?

A: Ripple current specifications differ slightly (320 mA @ 120 Hz for LGJ2G390MELY versus 300 mA @ 120 Hz for LGJ2G390MELZ15). Applications requiring the higher ripple current specification should use the primary part.

Q: What mounting considerations apply to these snap-in capacitors?

A: Both parts are through-hole radial, can-style snap-in capacitors with identical 0.394" (10.00mm) lead spacing. Verify PCB hole spacing and mechanical clearance, particularly the different physical dimensions, before substitution.