MLP331M400EB1A Equivalent & Substitute Parts

Part Overview

The MLP331M400EB1A is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the MLP series. This FlatPack, tabbed chassis mount capacitor is designed for general purpose applications requiring stable capacitance and low equivalent series resistance over extended operating periods. The part is currently active in production with 698 units in stock. Substitute parts are identified to address application requirements, inventory availability, or voltage rating adjustments while maintaining electrical and mechanical compatibility.

Substiute Parts

MLP331M400EB1A

Cornell Dubilier Electronics (CDE)In Stock: 759MLP331M400EB1A Datasheet

Current PartRFQ

MLP331M420EB1A

Cornell Dubilier Electronics (CDE)In Stock: 940MLP331M420EB1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MLP331M400EB1A is determined by strict equivalence in the following critical parameters:

Mandatory Equivalence Parameters:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• ESR: 530 mOhm @ 120 Hz (exact match required)
• Lifetime: 2000 Hrs @ 85°C (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)
• Ripple Current @ 120 Hz: 2.1 A (exact match required)
• Ripple Current @ 20 kHz: 2.5 A (exact match required)
• Lead Spacing: 1.000" (25.40 mm) (exact match required)
• Physical Dimensions: 3.000" L x 1.750" W (exact match required)
• Height - Seated: 0.500" (exact match required)
• Package / Case: FlatPack, Tabbed (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Series: MLP (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameter:

• Voltage - Rated: Substitutes with equal or higher voltage rating are acceptable

The MLP331M420EB1A qualifies as a substitute because it maintains all mandatory parameters while providing a higher voltage rating (420 V versus 400 V), which is an acceptable upgrade in aluminum electrolytic capacitor applications.

Parameter Comparison

Engineering Selection Recommendations

Both the MLP331M400EB1A and MLP331M420EB1A are active products from Cornell Dubilier Electronics with identical compliance status. Both parts are RoHS non-compliant and REACH affected, with matching ECCN (EAR99) and HTSUS classifications.

The MLP331M420EB1A operates at a higher voltage rating (420 V) while maintaining all other electrical and mechanical specifications. This higher voltage rating provides additional safety margin in applications where the supply voltage approaches the 400 V nominal rating of the main part.

Selection between these parts should be based on:

1. Voltage Requirement: If the application circuit operates at or near 400 V, the MLP331M420EB1A is preferred for enhanced voltage margin. If the circuit operates significantly below 400 V, either part is suitable.

2. Inventory Availability: The MLP331M420EB1A has higher stock availability (929 units versus 698 units).

3. Circuit Design Constraints: Both parts are mechanically and electrically interchangeable in chassis mount applications requiring 330 µF capacitance with FlatPack, tabbed configuration.

Frequently Asked Questions (FAQ)

Q: Can the MLP331M420EB1A replace the MLP331M400EB1A in all applications?

A: Yes. The MLP331M420EB1A is a direct substitute with identical electrical performance and mechanical dimensions. The higher voltage rating (420 V versus 400 V) is an upgrade that does not compromise compatibility.

Q: What is the significance of the voltage rating difference?

A: Aluminum electrolytic capacitors are rated for a maximum continuous voltage. The MLP331M420EB1A is rated for 420 V, while the MLP331M400EB1A is rated for 400 V. In applications where circuit voltage approaches the rated value, the higher-rated part provides additional safety margin and reduces stress on the dielectric.

Q: Are the physical dimensions identical?

A: Yes. Both parts have identical lead spacing (1.000" / 25.40 mm), length (3.000" / 76.20 mm), width (1.750" / 44.45 mm), and seated height (0.500" / 12.70 mm). They are mechanically interchangeable in chassis mount applications.

Q: Do these parts have the same ESR and ripple current ratings?

A: Yes. Both the MLP331M400EB1A and MLP331M420EB1A have identical ESR (530 mOhm @ 120 Hz), ripple current at low frequency (2.1 A @ 120 Hz), and ripple current at high frequency (2.5 A @ 20 kHz).

Q: What is the FlatPack, Tabbed package configuration?

A: FlatPack, Tabbed refers to the physical form factor and terminal style. This configuration features a flat rectangular case with tabbed leads designed for chassis mount applications, providing secure mechanical mounting and electrical connection.

Q: Are there any compliance differences between these parts?

A: No. Both parts share identical compliance status: RoHS non-compliant, REACH affected, ECCN EAR99, and HTSUS 8532.22.0085. Compliance considerations do not differentiate these substitutes.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -40°C to 85°C, with a rated lifetime of 2000 hours at 85°C.