381LQ271M350J032 Equivalent & Substitute Parts Reference

Part Overview

The 381LQ271M350J032 is a 270 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. 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 operating at elevated voltages.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications. The substitute parts listed maintain core electrical parameters including capacitance value, voltage rating, tolerance, package geometry, and mounting configuration.

Substiute Parts

381LQ271M350J032

Cornell Dubilier Electronics (CDE)In Stock: 1115381LQ271M350J032 Datasheet

Current PartRFQ

LGN2V271MELA35

NichiconIn Stock: 1227LGN2V271MELA35 Datasheet

DirectRFQ

LQS2V271MELA35

NichiconIn Stock: 1013LQS2V271MELA35 Datasheet

DirectRFQ

LGG2G271MELA35

NichiconIn Stock: 1066LGG2G271MELA35 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 381LQ271M350J032 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Capacitance: 270 µF (exact match required)
• Voltage Rating: 350 V (minimum; higher ratings acceptable as upgrades)
• Tolerance: ±20% (exact match required)
• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Physical Dimensions: 0.984" Dia × 1.457" Height (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)
• Operating Temperature Range: -25°C ~ 105°C (exact match required)

Compliance Requirements:

• RoHS3 Compliant status
• REACH Unaffected status
• ECCN: EAR99 classification

The substitute parts are categorized into two groups:

Direct Equivalents (350 V Rating):

• LQS2V271MELA35 (Nichicon, LQS Series)
• LGN2V271MELA35 (Nichicon, LGN Series)

These parts maintain identical voltage ratings and all primary electrical and mechanical parameters.

Upgrade Equivalent (400 V Rating):

• LGG2G271MELA35 (Nichicon, LGG Series)

This part provides higher voltage rating (400 V) while maintaining all other critical parameters, suitable for applications permitting voltage derating.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (350 V Equivalents):

The LQS2V271MELA35 and LGN2V271MELA35 are direct functional equivalents to the 381LQ271M350J032. Both Nichicon parts maintain identical electrical specifications, mechanical dimensions, and compliance certifications. Selection between these two direct equivalents may be based on inventory availability and lead time considerations. Both parts are Active status and ROHS3 compliant.

The LQS2V271MELA35 (LQS Series) and LGN2V271MELA35 (LGN Series) both provide extended lifetime ratings of 3000 Hrs @ 105°C compared to the original part's 2000 Hrs @ 105°C specification, representing improved reliability characteristics within the same electrical and mechanical envelope.

Upgrade Substitution (400 V Rating):

The LGG2G271MELA35 operates at 400 V rated voltage, providing additional voltage margin over the original 350 V specification. This part is suitable for applications where circuit design permits voltage derating or where enhanced overvoltage protection is beneficial. The LGG2G271MELA35 maintains all mechanical compatibility and compliance requirements. Lifetime rating matches the original part at 2000 Hrs @ 105°C.

All substitute parts are Active status products with ROHS3 compliance and REACH Unaffected designation, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can LQS2V271MELA35 and LGN2V271MELA35 be used interchangeably with 381LQ271M350J032?

A: Yes. Both Nichicon parts are direct equivalents meeting all electrical and mechanical specifications. They maintain identical capacitance (270 µF), voltage rating (350 V), tolerance (±20%), package configuration (Radial, Can - Snap-In), lead spacing (10.00 mm), physical dimensions (25.00 mm diameter × 37.00 mm height), and operating temperature range (-25°C ~ 105°C). Both are ROHS3 compliant and REACH unaffected.

Q: What is the difference between the direct equivalents and the LGG2G271MELA35 upgrade?

A: The LGG2G271MELA35 operates at 400 V rated voltage compared to 350 V for the direct equivalents. All other parameters remain identical: 270 µF capacitance, ±20% tolerance, same package type, lead spacing, and physical dimensions. The 400 V rating provides additional voltage margin and is suitable for applications permitting voltage derating.

Q: Are all substitute parts physically compatible with the original PCB layout?

A: Yes. All substitute parts maintain identical lead spacing (0.394" / 10.00 mm), can diameter (0.984" / 25.00 mm), and maximum seated height (1.457" / 37.00 mm). All are through-hole mounted radial, can snap-in packages with polar configuration. Direct PCB replacement is supported without layout modification.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 under ECCN regulations, matching the original part's compliance profile.

Q: What is the difference in lifetime ratings between the parts?

A: The original 381LQ271M350J032 and LGG2G271MELA35 are rated for 2000 Hrs @ 105°C. The LQS2V271MELA35 and LGN2V271MELA35 provide extended lifetime of 3000 Hrs @ 105°C, representing 50% longer operational life at maximum temperature.

Q: Can I use a 400 V rated capacitor in a 350 V circuit?

A: Yes. The LGG2G271MELA35 (400 V rating) is suitable for 350 V circuits. Higher voltage ratings provide additional safety margin and do not negatively impact circuit performance. The capacitor will operate within its rated specifications.

Q: Are ESR (Equivalent Series Resistance) values critical for substitution?

A: ESR values are not specified for the Nichicon substitute parts in the provided data. The original 381LQ271M350J032 specifies 740 mOhm @ 120 Hz. For applications where ESR is a critical design parameter, direct measurement or manufacturer datasheet consultation is required to confirm compatibility.

Q: What inventory status should I consider for procurement?

A: Current inventory levels are: 381LQ271M350J032 (1086 pcs), LQS2V271MELA35 (943 pcs), LGN2V271MELA35 (1135 pcs), and LGG2G271MELA35 (1027 pcs). All parts are listed as new original stock in bulk packaging.