Equivalent & Substitute Parts for 380LQ331M400J042

Part Overview

The Cornell Dubilier Electronics 380LQ331M400J042 is a 330 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in configuration. This component is classified as Active product status and is designed for general-purpose applications requiring reliable energy storage and filtering in power supply circuits. The part is ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Substitute parts become necessary when the original part number reaches end-of-life status, inventory constraints occur, or when design requirements demand enhanced performance characteristics such as extended operating temperature ranges or improved lifetime ratings at elevated temperatures.

Substiute Parts

380LQ331M400J042

Cornell Dubilier Electronics (CDE)In Stock: 842380LQ331M400J042 Datasheet

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380LQ331M400A012

Cornell Dubilier Electronics (CDE)In Stock: 3031380LQ331M400A012 Datasheet

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380LQ331M400K022

Cornell Dubilier Electronics (CDE)In Stock: 4181380LQ331M400K022 Datasheet

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ELXS401VSN331MQ40S

Chemi-ConIn Stock: 989ELXS401VSN331MQ40S Datasheet

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ESMR451VSN331MQ40S

Chemi-ConIn Stock: 1134ESMR451VSN331MQ40S Datasheet

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LGG2G331MELA40

NichiconIn Stock: 1363LGG2G331MELA40 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the 380LQ331M400J042 is based on strict electrical and mechanical parameter matching within the aluminum electrolytic capacitor category. All substitute parts must satisfy the following mandatory criteria:

Electrical Requirements:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 400 V minimum (higher ratings acceptable for backward compatibility)
• Tolerance: ±20% (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required for PCB hole alignment)

Mechanical Requirements:

• Package Type: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Performance Parameters (Flexible within application context):

• ESR, Ripple Current, Lifetime at Temperature, and Operating Temperature Range may vary between substitute parts. These parameters determine suitability for specific thermal and electrical stress conditions but do not prevent substitution if the application requirements are met.

Compliance Requirements:

• RoHS3 Compliance (all substitutes must maintain this status)
• REACH Unaffected status (all substitutes must maintain this status)

Substitute parts are categorized as either Same-Series Variants (different packaging or dimensional configurations within the same 380LQ series) or Cross-Manufacturer Upgrades (alternative manufacturers offering enhanced performance characteristics).

Parameter Comparison

Engineering Selection Recommendations

Same-Series Variants (Cornell Dubilier Electronics 380LQ Series):

The parts 380LQ331M400A012 and 380LQ331M400K022 are direct electrical equivalents to the 380LQ331M400J042, sharing identical capacitance, voltage rating, tolerance, ESR, lifetime rating, and operating temperature specifications. These variants differ only in physical dimensions (diameter and height). Selection between these parts depends on available PCB space:

• 380LQ331M400J042: 0.984" diameter × 1.654" height (original specification)
• 380LQ331M400A012: 1.378" diameter × 1.063" height (larger diameter, shorter height)
• 380LQ331M400K022: 1.181" diameter × 1.260" height (intermediate dimensions)

All three maintain ROHS3 compliance and REACH unaffected status. Selection is based solely on mechanical fit within the available PCB footprint.

Cross-Manufacturer Upgrade Options:

ELXS401VSN331MQ40S (Chemi-Con LXS Series): This part offers extended lifetime performance with 5000 hours at 105°C compared to the main part's 2000 hours at 85°C. Operating temperature range extends to 105°C. Physical dimensions match the main part (0.984" diameter × 1.654" height). This upgrade is suitable for applications requiring enhanced thermal stability and extended service life. ROHS3 compliant and REACH unaffected.

ESMR451VSN331MQ40S (Chemi-Con SMR Series): This part features a higher voltage rating of 450 V, providing additional voltage margin beyond the 400 V specification. Physical dimensions are comparable (1.000" diameter × 1.673" height). Ripple current capability is increased to 2.11 A at 120 Hz. This upgrade is suitable for applications where voltage headroom is beneficial. RoHS compliant and REACH unaffected.

LGG2G331MELA40 (Nichicon LGG Series): This part matches the main part's electrical specifications (330 µF, 400 V, ±20% tolerance) with identical physical dimensions (0.984" diameter × 1.654" height). Operating temperature extends to 105°C with 2000-hour lifetime at that temperature. This upgrade provides improved thermal performance without dimensional changes. ROHS3 compliant and REACH unaffected.

All substitute parts maintain the critical parameters: 330 µF capacitance, 400 V or higher voltage rating, ±20% tolerance, 0.394" (10.00mm) lead spacing, radial snap-in package, through-hole mounting, and polar configuration. Selection among substitutes is determined by application-specific requirements for thermal performance, voltage margin, and available PCB space.

Frequently Asked Questions (FAQ)

Q1: Can I substitute 380LQ331M400A012 or 380LQ331M400K022 for the 380LQ331M400J042 in my circuit?

A: Yes, both parts are electrically identical to the main part. They share the same capacitance (330 µF), voltage rating (400 V), tolerance (±20%), ESR (603 mOhm @ 120Hz), lifetime (2000 Hrs @ 85°C), and operating temperature range (-25°C ~ 85°C). The only differences are physical dimensions. Substitution is valid if the PCB layout accommodates the different diameter and height specifications. 380LQ331M400A012 has a larger diameter (1.378") but shorter height (1.063"), while 380LQ331M400K022 offers intermediate dimensions (1.181" diameter × 1.260" height).

Q2: What is the advantage of using ELXS401VSN331MQ40S instead of the original 380LQ331M400J042?

A: The ELXS401VSN331MQ40S offers extended lifetime performance with 5000 hours at 105°C compared to 2000 hours at 85°C for the original part. The operating temperature range extends to 105°C, making it suitable for applications exposed to higher ambient temperatures or thermal stress. Physical dimensions are identical (0.984" diameter × 1.654" height), allowing direct mechanical substitution. Electrical specifications remain equivalent: 330 µF, 400 V, ±20% tolerance.

Q3: Why would I choose ESMR451VSN331MQ40S with its 450 V rating over the 400 V rated main part?

A: The 450 V rating provides additional voltage margin above the 400 V specification, offering protection against voltage transients or overvoltage conditions. This upgrade is beneficial in applications where circuit voltage may occasionally exceed nominal levels. The part also provides increased ripple current capability (2.11 A @ 120 Hz versus 1.9 A for the main part). Physical dimensions are comparable (1.000" diameter × 1.673" height). Electrical capacitance and tolerance remain identical at 330 µF and ±20%.

Q4: Are all substitute parts RoHS and REACH compliant like the original?

A: Yes, all listed substitute parts maintain RoHS compliance (either ROHS3 or RoHS compliant status) and REACH unaffected status, matching the regulatory compliance of the original 380LQ331M400J042. This ensures compatibility with current environmental regulations and procurement requirements.

Q5: Can I use LGG2G331MELA40 as a direct replacement without PCB modifications?

A: Yes, the LGG2G331MELA40 is a direct mechanical and electrical replacement. It matches the original part's physical dimensions (0.984" diameter × 1.654" height), lead spacing (0.394" / 10.00mm), and electrical specifications (330 µF, 400 V, ±20% tolerance). The primary advantage is extended operating temperature capability to 105°C with 2000-hour lifetime at that temperature, compared to the original's 85°C maximum. No PCB layout changes are required.

Q6: What is the significance of lead spacing (0.394" / 10.00mm) in substitution?

A: Lead spacing determines the distance between the two radial leads on the PCB. All substitute parts maintain the identical 0.394" (10.00mm) lead spacing as the original 380LQ331M400J042. This ensures that the component fits into existing PCB holes without modification. Deviation from this specification would require PCB rework and is not acceptable for direct substitution.

Q7: How do I determine which substitute part is best for my application?

A: Selection depends on three primary factors: (1) Available PCB space—if diameter or height is constrained, choose among the same-series variants (380LQ331M400A012 or 380LQ331M400K022) based on your footprint; (2) Thermal requirements—if your application operates above 85°C or requires extended lifetime, select ELXS401VSN331MQ40S or LGG2G331MELA40; (3) Voltage margin—if voltage transients are a concern, ESMR451VSN331MQ40S provides 450 V rating. All substitutes maintain the critical electrical parameters: 330 µF capacitance, ±20% tolerance, and 0.394" lead spacing.

Q8: Are there any performance differences in ripple current handling between the main part and substitutes?

A: Yes, ripple current ratings vary among the parts. The main part and same-series variants (380LQ331M400A012, 380LQ331M400K022) all handle 1.9 A @ 120 Hz. ESMR451VSN331MQ40S provides higher ripple current at 2.11 A @ 120 Hz, while ELXS401VSN331MQ40S and LGG2G331MELA40 have lower ratings at 1.47 A and 1.15 A respectively. Ripple current capability affects thermal performance under AC current stress. Select a substitute with equal or higher ripple current rating if your application involves significant AC ripple current.

Q9: What does "Snap-In" package mean, and is it critical for substitution?

A: "Snap-In" refers to the mechanical mounting method where the capacitor's leads insert into PCB holes and the component body snaps into place on the board. This is a specific package configuration for radial aluminum electrolytic capacitors. All substitute parts maintain this identical snap-in configuration, ensuring mechanical compatibility. Deviation from this package type would require different PCB hole patterns and is not acceptable for direct substitution.

Q10: Can I mix different substitute parts in the same circuit board?

A: Yes, all listed substitute parts are electrically compatible with each other and with the original 380LQ331M400J042, provided they meet your application's thermal and voltage requirements. However, mixing parts with different physical dimensions (diameter and height) may create assembly challenges if PCB space is limited. It is recommended to use a single part number across the entire board for consistency and simplified inventory management.