EET-ED2W331DA Equivalent & Substitute Parts

Part Overview

The Panasonic EET-ED2W331DA is a 330 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package format. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates across a temperature range of -25°C to 105°C with a 3000-hour lifetime rating at 105°C, suitable for general-purpose power supply and filtering applications requiring high voltage aluminum electrolytic capacitors.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
ESR @ 120Hz	402 mOhm
Lifetime @ 105°C	3000 Hours
Operating Temperature Range	-25°C to 105°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.181" (30.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility for the EET-ED2W331DA is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)

Secondary Compatibility Factors:

Operating Temperature Range: -25°C to 105°C minimum
Lifetime @ 105°C: 3000 hours minimum
Polarization: Polar (exact match required)

All substitute parts listed meet these criteria. Variations in case diameter (within 30-35 mm range), height, ESR specifications, and ripple current ratings are acceptable provided the primary matching criteria are satisfied and the component physically fits the PCB footprint.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120Hz	Lifetime @ 105°C	Case Dia.	Height (Max)	Product Status	RoHS Status
EET-ED2W331DA	Panasonic	330 µF	450 V	±20%	402 mOhm	3000 Hrs	1.181" (30 mm)	1.969" (50 mm)	Obsolete	REACH Affected
381LR331M450K052	Cornell Dubilier Electronics	330 µF	450 V	±20%	402 mOhm	3000 Hrs	1.181" (30 mm)	2.047" (52 mm)	Active	ROHS3 Compliant
450HXG330MEFC30X45	Rubycon	330 µF	450 V	±20%	Not Specified	3000 Hrs	1.181" (30 mm)	1.850" (47 mm)	Active	ROHS3 Compliant
B43504A5337M000	EPCOS - TDK Electronics	330 µF	450 V	±20%	410 mOhm	3000 Hrs	1.181" (30 mm)	2.047" (52 mm)	Not For New Designs	ROHS3 Compliant
EKMT451VSN331MR45S	Chemi-Con	330 µF	450 V	±20%	Not Specified	3000 Hrs	1.181" (30 mm)	1.870" (47.50 mm)	Active	RoHS Compliant
LGW2W331MELB45	Nichicon	330 µF	450 V	±20%	Not Specified	3000 Hrs	1.181" (30 mm)	1.772" (45 mm)	Active	ROHS3 Compliant
381LQ331M450A032	Cornell Dubilier Electronics	330 µF	450 V	±20%	553 mOhm	2000 Hrs	1.378" (35 mm)	1.457" (37 mm)	Active	ROHS3 Compliant
381LQ331M450K452	Cornell Dubilier Electronics	330 µF	450 V	±20%	553 mOhm	2000 Hrs	1.181" (30 mm)	1.850" (47 mm)	Active	ROHS3 Compliant
381LR331M450A042	Cornell Dubilier Electronics	330 µF	450 V	±20%	402 mOhm	3000 Hrs	1.378" (35 mm)	1.654" (42 mm)	Active	ROHS3 Compliant
381LX331M450A042	Cornell Dubilier Electronics	330 µF	450 V	±20%	Not Specified	3000 Hrs	1.378" (35 mm)	1.654" (42 mm)	Active	ROHS3 Compliant
381LX331M450K052	Cornell Dubilier Electronics	330 µF	450 V	±20%	Not Specified	3000 Hrs	1.181" (30 mm)	2.047" (52 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Recommended for New Designs):

The following parts provide direct functional equivalence with active product status and current manufacturing support:

381LR331M450K052 (Cornell Dubilier Electronics) - Active status with ROHS3 compliance. Identical electrical specifications to the original part with 402 mOhm ESR and 3000-hour lifetime. Height variance of 2 mm (52 mm vs. 50 mm) requires PCB footprint verification.

450HXG330MEFC30X45 (Rubycon) - Active status with ROHS3 compliance. Compact height profile (47 mm) reduces PCB space requirements. Electrical performance equivalent across all critical parameters.

EKMT451VSN331MR45S (Chemi-Con) - Active status with RoHS compliance. Compact height (47.50 mm) with equivalent electrical specifications.

LGW2W331MELB45 (Nichicon) - Active status with ROHS3 compliance and highest inventory availability (1,000,200 units). Most compact height option (45 mm).

Acceptable Alternatives (Reduced Lifetime):

381LQ331M450A032 and 381LQ331M450K452 (Cornell Dubilier Electronics) - Active status with ROHS3 compliance. Reduced lifetime rating of 2000 hours at 105°C versus 3000 hours. Higher ESR (553 mOhm) may impact ripple current performance. Suitable only where reduced lifetime is acceptable.

Not Recommended for New Designs:

B43504A5337M000 (EPCOS - TDK Electronics) - Marked "Not For New Designs" status. While electrically compatible, this designation indicates manufacturer discontinuation trajectory and should be avoided for new product development.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different case diameter?

A: Case diameter variations between 30 mm and 35 mm are acceptable provided the PCB footprint accommodates the physical dimensions. Verify lead spacing remains 0.394" (10.00 mm) and confirm height clearance for the specific substitute selected. Dimensional drawings should be cross-referenced before PCB layout finalization.

Q: What is the significance of ESR differences between substitute parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. The original part specifies 402 mOhm at 120 Hz. Substitutes with higher ESR values (such as 553 mOhm in the 381LQ series) may generate additional heat under high ripple current conditions. Select substitutes with ESR specifications matching or lower than the original part for equivalent thermal performance.

Q: Are all listed substitutes RoHS compliant?

A: Most active substitutes carry ROHS3 or RoHS compliance certification. The original Panasonic part is marked REACH Affected. All substitute parts listed are REACH Unaffected or ROHS3 Compliant, making them suitable for applications requiring environmental compliance.

Q: What is the difference between "Direct" and "Similar" substitute classifications?

A: Direct substitutes (381LR331M450K052, 450HXG330MEFC30X45, B43504A5337M000, EKMT451VSN331MR45S, LGW2W331MELB45) maintain 3000-hour lifetime ratings at 105°C matching the original specification. Similar substitutes (381LQ series, 381LX series) may have reduced lifetime ratings or unspecified ESR values, requiring application-specific evaluation.

Q: Can I substitute a part with a higher voltage rating?

A: Voltage ratings are not interchangeable in either direction. A 450 V rated capacitor must not be replaced with a lower voltage part. Higher voltage ratings are not necessary and may introduce unnecessary cost and size penalties. Maintain exact 450 V specification.

Q: Which substitute offers the best inventory availability?

A: LGW2W331MELB45 (Nichicon) provides the highest inventory availability at 1,000,200 units in stock, combined with active product status and ROHS3 compliance. This part also offers a compact height profile of 45 mm.

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