380LX331M315J042 Equivalent & Substitute Parts

Part Overview

The Cornell Dubilier Electronics 380LX331M315J042 is a 330 µF, 315 V aluminum electrolytic capacitor with radial snap-in mounting, rated for general-purpose applications. This component is active and maintains full inventory availability. Alternative components become necessary when application requirements exceed the voltage rating, when extended operating temperature ranges are needed, or when improved lifetime specifications are required for mission-critical designs.

Substiute Parts

380LX331M315J042

Cornell Dubilier Electronics (CDE)In Stock: 1043380LX331M315J042 Datasheet

Current PartRFQ

ELXS401VSN331MQ40S

Chemi-ConIn Stock: 989ELXS401VSN331MQ40S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The Chemi-Con ELXS401VSN331MQ40S qualifies as a direct substitute for the 380LX331M315J042 based on the following critical electrical and mechanical parameters:

Matching Specifications:

• Capacitance: 330 µF (identical)
• Tolerance: ±20% (identical)
• Lead Spacing: 0.394" (10.00 mm) (identical)
• Height: 1.654" (42.00 mm) (identical)
• Mounting Type: Through Hole - Snap-In (identical)
• Package/Case: Radial, Can - Snap-In (identical)
• Polarization: Polar (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Applications: General Purpose (identical)

Enhanced Characteristics:

• Voltage Rating: 400 V (versus 315 V) — higher rating permits use in higher voltage applications
• Operating Temperature Range: -25°C ~ 105°C (versus -25°C ~ 85°C) — extended upper limit
• Lifetime: 5000 Hrs @ 105°C (versus 3000 Hrs @ 85°C) — improved reliability metrics

The substitute maintains full mechanical compatibility and identical capacitance values, supporting direct PCB footprint substitution without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Both the 380LX331M315J042 and ELXS401VSN331MQ40S are active products with ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current applications.

The Chemi-Con ELXS401VSN331MQ40S serves as a qualified substitute when designs require:

• Voltage margins beyond 315 V specifications
• Extended temperature operation to 105°C
• Enhanced lifetime reliability ratings at elevated temperatures

The Cornell Dubilier 380LX331M315J042 remains the preferred selection when the 315 V rating and 85°C maximum operating temperature satisfy application requirements, and when specific ESR characteristics of 600 mOhm @ 120 Hz are functionally critical.

Frequently Asked Questions (FAQ)

Q: Can the ELXS401VSN331MQ40S directly replace the 380LX331M315J042 on the PCB?

A: Yes. Both components share identical lead spacing (10.00 mm), height (42.00 mm), and snap-in mounting configuration. The diameter difference (25.00 mm versus 25.40 mm) does not affect mechanical fit in standard through-hole mounting holes. Direct footprint substitution is supported without circuit modification.

Q: What are the primary electrical differences between these parts?

A: The Chemi-Con part provides 400 V rating versus 315 V, and supports continuous operation to 105°C versus 85°C. These represent enhancements rather than deviations. Capacitance, tolerance, and current handling specifications remain equivalent.

Q: Are there ripple current considerations when substituting?

A: The 380LX331M315J042 specifies 1.82 A ripple current at 120 Hz. The ELXS401VSN331MQ40S specifies 1.47 A at 120 Hz, indicating slightly lower low-frequency ripple capacity but higher capability at 50 kHz (2.1021 A). Application ripple frequency profiles should guide final selection.

Q: Which part should be selected for high-temperature or high-voltage applications?

A: The ELXS401VSN331MQ40S is engineered for both conditions. Its 105°C operating ceiling and 400 V rating accommodate designs requiring extended thermal or electrical margins. The 5000-hour lifetime at 105°C further supports critical applications.

Q: Are inventory considerations a factor in substitution selection?

A: Both components maintain active inventory status. Specific procurement timelines and regional availability should be confirmed with component distributors before final design lock.