400MXG120MEFCSN22X30 Equivalent & Substitute Parts

Part Overview

The 400MXG120MEFCSN22X30 is a 120 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Rubycon. This component is rated for 3000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is Active status and ROHS3 compliant, making it suitable for modern electronic equipment requiring environmental compliance.

Substitute parts are necessary when the original part becomes unavailable, when higher voltage ratings are required for circuit margin, or when extended lifetime specifications are needed for reliability-critical applications.

Substiute Parts

400MXG120MEFCSN22X30

RubyconIn Stock: 866400MXG120MEFCSN22X30 Datasheet

Current PartRFQ

450MXG120MEFCSN22X30

RubyconIn Stock: 1465450MXG120MEFCSN22X30 Datasheet

UpgradeRFQ

450VXH120MEFCSN22X30

RubyconIn Stock: 996450VXH120MEFCSN22X30 Datasheet

UpgradeRFQ

400HXG120MEFCSN22X30

RubyconIn Stock: 1270400HXG120MEFCSN22X30 Datasheet

Parametric EquivalentRFQ

LQS2G121MELZ30

NichiconIn Stock: 661LQS2G121MELZ30 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 400MXG120MEFCSN22X30 is determined by the following criteria:

Primary Substitution Criteria (Must Match):

• Capacitance: 120 µF
• Tolerance: ±20%
• Lead Spacing: 0.394" (10.00mm)
• Size / Dimension: 0.866" Dia (22.00mm)
• Height - Seated (Max): 1.260" (32.00mm)
• Mounting Type: Through Hole
• Package / Case: Radial, Can - Snap-In
• Polarization: Polar
• Operating Temperature Range: -25°C ~ 105°C

Secondary Substitution Criteria (May Vary):

• Voltage - Rated: Equal or higher voltage rating
• Lifetime @ Temperature: Equal or higher lifetime specification
• Manufacturer: Different manufacturers acceptable if parameters match
• Series designation: Different series acceptable if parameters match

The substitute parts are grouped into two categories:

Upgrade Substitutes: Parts with higher voltage rating (450 V) or extended lifetime (5000 Hrs @ 105°C) compared to the main part. These provide enhanced performance margins and reliability.

Parametric Equivalents: Parts with identical electrical specifications (120 µF, 400 V, 3000 Hrs @ 105°C) but from different manufacturers or series. These maintain functional equivalence with the original part.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring continued availability and environmental regulatory conformance.

For Direct Replacement (Parametric Equivalents): The 400HXG120MEFCSN22X30 (Rubycon HXG series) and LQS2G121MELZ30 (Nichicon LQS series) provide identical electrical specifications to the original 400MXG120MEFCSN22X30. Both are suitable for direct substitution in applications where the original part is unavailable.

For Enhanced Voltage Margin: The 450MXG120MEFCSN22X30 offers a 50 V higher voltage rating while maintaining the same 3000-hour lifetime specification. This upgrade is applicable in circuits where additional voltage headroom improves reliability margins.

For Extended Lifetime Applications: The 450VXH120MEFCSN22X30 combines a 450 V voltage rating with an extended 5000-hour lifetime at 105°C. This part is suitable for applications requiring enhanced long-term reliability and higher voltage tolerance.

Frequently Asked Questions (FAQ)

Q: Can I use a 450 V rated capacitor in place of a 400 V rated capacitor?

A: Yes. A higher voltage rating is a direct upgrade. The 450MXG120MEFCSN22X30 and 450VXH120MEFCSN22X30 are both rated for 450 V and are suitable replacements for the 400 V 400MXG120MEFCSN22X30 in any application designed for 400 V operation.

Q: What is the difference between the MXG, VXH, HXG, and LQS series?

A: These designations identify different product series from Rubycon (MXG, VXH, HXG) and Nichicon (LQS). All listed parts share identical mechanical dimensions, lead spacing, and core electrical specifications (120 µF, ±20% tolerance, 400 V or 450 V rating). Series differences reflect internal design variations that do not affect functional compatibility in this application.

Q: Does the extended 5000-hour lifetime of the 450VXH120MEFCSN22X30 affect its physical dimensions?

A: No. The 450VXH120MEFCSN22X30 maintains the same physical dimensions as the original part: 0.866" diameter, 1.260" maximum seated height, and 0.394" lead spacing. Extended lifetime is achieved through internal design improvements, not dimensional changes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original 400MXG120MEFCSN22X30.

Q: Can I substitute a Nichicon LQS2G121MELZ30 for the Rubycon 400MXG120MEFCSN22X30?

A: Yes. The LQS2G121MELZ30 is a parametric equivalent with identical capacitance (120 µF), tolerance (±20%), voltage rating (400 V), lifetime (3000 Hrs @ 105°C), and physical dimensions. It is suitable for direct substitution.

Q: What is the inventory status of these substitute parts?

A: Current inventory levels are: 450MXG120MEFCSN22X30 (1429 pcs), 450VXH120MEFCSN22X30 (925 pcs), 400HXG120MEFCSN22X30 (1234 pcs), and LQS2G121MELZ30 (616 pcs). The original 400MXG120MEFCSN22X30 has 757 pcs in stock.