MLP331M400EB1D Equivalent & Substitute Parts

Part Overview

The MLP331M400EB1D is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the MLP series. This FlatPack, tabbed chassis mount component is designed for general purpose applications requiring stable capacitance and low equivalent series resistance over extended operational life. The part is currently active in production with 983 pieces in stock. Substitute parts are identified to address inventory availability, voltage rating upgrades, or packaging variant requirements while maintaining electrical and mechanical compatibility within the MLP series.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage - Rated	400 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	530 mOhm @ 120 Hz
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ Low Frequency	2.1 A @ 120 Hz
Ripple Current @ High Frequency	2.5 A @ 20 kHz
Lead Spacing	1.000" (25.40 mm)
Size / Dimension	3.000" L x 1.750" W (76.20 mm x 44.45 mm)
Height - Seated (Max)	0.500" (12.70 mm)
Mounting Type	Chassis Mount
Package / Case	FlatPack, Tabbed
Series	MLP
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MLP331M400EB1D are classified into two categories based on electrical and mechanical compatibility:

Upgrade Substitutes (Higher Voltage Rating): MLP331M420EB0D and MLP331M420EB1A feature a rated voltage of 420 V, compared to the 400 V rating of the main part. These substitutes maintain identical capacitance (330 µF), tolerance (±20%), ESR (530 mOhm @ 120 Hz), lifetime (2000 Hrs @ 85°C), operating temperature range (-40°C ~ 85°C), ripple current specifications, and mechanical dimensions. The increased voltage rating provides enhanced margin in applications where the circuit voltage approaches the 400 V limit.

Parametric Equivalents (Same Voltage Rating): MLP331M400EB0D and MLP331M400EB1A are direct parametric equivalents to the main part, sharing all electrical specifications and mechanical dimensions. These parts differ only in packaging variant designation (suffix EB0D versus EB1A), representing different manufacturing batches or tape/reel configurations within the same electrical performance class.

All substitute parts are manufactured by Cornell Dubilier Electronics (CDE), belong to the MLP series, and maintain FlatPack tabbed chassis mount configuration with identical lead spacing and physical dimensions.

Parameter Comparison

Parameter	MLP331M400EB1D (Main)	MLP331M420EB0D (Upgrade)	MLP331M420EB1A (Upgrade)	MLP331M400EB0D (Equivalent)	MLP331M400EB1A (Equivalent)
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF
Voltage - Rated	400 V	420 V	420 V	400 V	400 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR @ 120 Hz	530 mOhm	530 mOhm	530 mOhm	530 mOhm	530 mOhm
Lifetime @ 85°C	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	2.1 A	2.1 A	2.1 A	2.1 A	2.1 A
Ripple Current @ 20 kHz	2.5 A	2.5 A	2.5 A	2.5 A	2.5 A
Lead Spacing	1.000" (25.40 mm)	1.000" (25.40 mm)	1.000" (25.40 mm)	1.000" (25.40 mm)	1.000" (25.40 mm)
Dimensions (L x W)	3.000" x 1.750"	3.000" x 1.750"	3.000" x 1.750"	3.000" x 1.750"	3.000" x 1.750"
Height - Seated (Max)	0.500"	0.500"	0.500"	0.500"	0.500"
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Package / Case	FlatPack, Tabbed	FlatPack, Tabbed	FlatPack, Tabbed	FlatPack, Tabbed	FlatPack, Tabbed
Series	MLP	MLP	MLP	MLP	MLP
Product Status	Active	Active	Active	Active	Active
Inventory (Pcs)	983	985	929	1142	698

Engineering Selection Recommendations

For Direct Replacement: MLP331M400EB0D and MLP331M400EB1A are parametric equivalents to MLP331M400EB1D. Both parts maintain identical electrical performance and mechanical compatibility. Selection between these three 400 V variants depends on inventory availability and packaging batch requirements. MLP331M400EB0D currently has the highest inventory level (1142 pieces).

For Voltage Margin Applications: MLP331M420EB0D and MLP331M420EB1A provide 420 V rated voltage while maintaining all other electrical and mechanical specifications. These upgrades are suitable for applications where circuit voltage approaches 400 V or where additional voltage safety margin is required. Both 420 V variants are active products with adequate inventory (985 and 929 pieces respectively).

Compliance Considerations: All substitute parts share identical RoHS non-compliance status, REACH affected status, ECCN (EAR99), and HTSUS classification (8532.22.0085) with the main part. Moisture sensitivity level (MSL 1 - Unlimited) is consistent across all variants, indicating no special moisture handling requirements.

Inventory Optimization: When MLP331M400EB1D inventory requires replenishment, MLP331M400EB0D offers the highest stock level (1142 pieces) as a parametric equivalent. For applications permitting voltage upgrade, MLP331M420EB0D (985 pieces) provides an alternative with enhanced voltage rating.

Frequently Asked Questions (FAQ)

Q: Can MLP331M420EB0D or MLP331M420EB1A be used as direct replacements for MLP331M400EB1D?

A: Yes. The 420 V rated variants are electrically and mechanically compatible with the 400 V main part. The higher voltage rating does not affect circuit operation in applications designed for 400 V operation. The 420 V parts provide additional voltage margin and are suitable for direct substitution.

Q: What is the difference between MLP331M400EB1D and MLP331M400EB0D?

A: Both parts are parametric equivalents with identical electrical specifications (330 µF, 400 V, ±20%, 530 mOhm ESR, 2000 Hrs @ 85°C) and mechanical dimensions. The suffix designation (EB1D versus EB0D) indicates different packaging variants or manufacturing batches. Electrical performance is equivalent.

Q: Are MLP331M400EB1A and MLP331M400EB0D interchangeable?

A: Yes. Both are parametric equivalents to the main part MLP331M400EB1D with identical electrical and mechanical specifications. The suffix designation reflects packaging variant differences only. All three 400 V parts are interchangeable from an engineering standpoint.

Q: What determines whether a substitute part is compatible?

A: Compatibility is determined by matching capacitance (330 µF), tolerance (±20%), ESR (530 mOhm @ 120 Hz), lifetime rating (2000 Hrs @ 85°C), operating temperature range (-40°C ~ 85°C), ripple current specifications, lead spacing (1.000"), physical dimensions (3.000" x 1.750" x 0.500"), and mounting type (Chassis Mount FlatPack, Tabbed). All substitute parts meet these criteria.

Q: Can I use a 420 V part in a circuit designed for 400 V?

A: Yes. A higher voltage rated capacitor operates safely in a lower voltage application. The 420 V variants (MLP331M420EB0D and MLP331M420EB1A) are suitable for any circuit application designed for the 400 V MLP331M400EB1D.

Q: Are there any compliance differences between the main part and substitutes?

A: No. All parts share identical RoHS non-compliance status, REACH affected designation, ECCN (EAR99), HTSUS code (8532.22.0085), and MSL rating (1 - Unlimited). Compliance profile is consistent across all variants.

Q: What is the significance of the packaging variant suffix (EB1D, EB0D, EB1A)?

A: The suffix designates different packaging configurations or manufacturing batches within the same electrical specification class. From an engineering perspective, parts with different suffixes but identical electrical parameters are functionally equivalent and interchangeable.

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