ECO-S2GA331EA Equivalent & Substitute Parts

Part Overview

The ECO-S2GA331EA is a 330 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. 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 rated lifetime of 3000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage - Rated	400 V
ESR (Equivalent Series Resistance)	402 mOhm @ 120 Hz
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)
Size / Dimension	1.378" Dia (35.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 400 V (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Diameter: 1.378" (35.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can - Snap-In (exact match required)
Operating Temperature Range: -25°C ~ 105°C (exact match required)
Polarization: Polar (exact match required)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in ESR, ripple current ratings, and lifetime specifications are permitted within the scope of general-purpose applications, provided the substitute part maintains compatibility with the physical footprint and electrical ratings of the original component.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120 Hz	Lifetime @ 105°C	Height (Max)	Product Status	RoHS Status
ECO-S2GA331EA	Panasonic Electronic Components	330 µF	400 V	±20%	402 mOhm	3000 Hrs	1.654" (42.00 mm)	Obsolete	REACH Affected
337LMB400M2ED	Cornell Dubilier / Illinois Capacitor	330 µF	400 V	±20%	1.25596 Ohm	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
337LMX400M2EE	Cornell Dubilier / Illinois Capacitor	330 µF	400 V	±20%	1.0048 Ohm	5000 Hrs	1.457" (37.00 mm)	Active	ROHS3 Compliant
337LMX400M2EF	Cornell Dubilier / Illinois Capacitor	330 µF	400 V	±20%	1.0048 Ohm	5000 Hrs	1.654" (42.00 mm)	Active	ROHS3 Compliant
381LR331M400A022	Cornell Dubilier Electronics (CDE)	330 µF	400 V	±20%	402 mOhm	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
400HXG330MEFCSN35X30	Rubycon	330 µF	400 V	±20%	Not Specified	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
400MXG330MEFCSN35X30	Rubycon	330 µF	400 V	±20%	Not Specified	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
400VXG330MEFC35X30	Rubycon	330 µF	400 V	±20%	Not Specified	5000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
400VXH330MEFC35X25	Rubycon	330 µF	400 V	±20%	Not Specified	5000 Hrs	1.063" (27.00 mm)	Active	ROHS3 Compliant
400VXH330MEFCSN35X25	Rubycon	330 µF	400 V	±20%	Not Specified	5000 Hrs	1.063" (27.00 mm)	Active	ROHS3 Compliant
B43505C9337M000	EPCOS - TDK Electronics	330 µF	400 V	±20%	270 mOhm @ 100 Hz	5000 Hrs	1.654" (42.00 mm)	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the ECO-S2GA331EA across the specified parameters. Selection should prioritize parts with active product status for new applications and ongoing production.

For applications requiring extended operational lifetime, the Cornell Dubilier 337LMX series (337LMX400M2EE, 337LMX400M2EF) and Rubycon VXG/VXH series offer 5000-hour lifetime ratings at 105°C, compared to the 3000-hour rating of the original part.

The 381LR331M400A022 from Cornell Dubilier Electronics provides direct ESR equivalence (402 mOhm) to the original ECO-S2GA331EA and maintains active product status with ROHS3 compliance.

For space-constrained applications, the Rubycon 400VXH330MEFC35X25 and 400VXH330MEFCSN35X25 offer reduced height (1.063" / 27.00 mm) while maintaining all core electrical specifications and 5000-hour lifetime rating.

The B43505C9337M000 from EPCOS - TDK Electronics is classified as "Not For New Designs" and should be used only for legacy system maintenance where direct replacement is required.

All substitute parts listed carry ROHS3 compliance or REACH Unaffected status, ensuring regulatory compatibility for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can I substitute the ECO-S2GA331EA with any of the listed parts?

A: Yes, all listed parts meet the core electrical and mechanical parameters: 330 µF capacitance, 400 V voltage rating, ±20% tolerance, 0.394" lead spacing, 1.378" diameter, through-hole mounting, and radial snap-in package. Physical height variations exist and must be verified against your PCB layout constraints.

Q: What is the difference between the 3000-hour and 5000-hour lifetime ratings?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation exceeds tolerance limits. The 5000-hour variants (337LMX series, Rubycon VXG/VXH series) provide extended service life for applications requiring higher reliability or longer maintenance intervals.

Q: Does the ESR difference between parts affect circuit performance?

A: ESR (Equivalent Series Resistance) affects ripple current handling and heat dissipation. Lower ESR values (270 mOhm to 1.0048 Ohm) indicate better high-frequency performance. The original part specifies 402 mOhm; substitutes with lower ESR provide improved performance characteristics without compromising compatibility.

Q: Are there height restrictions I should consider?

A: Yes. The original ECO-S2GA331EA has a maximum seated height of 1.654" (42.00 mm). Substitute parts range from 1.063" to 1.654" in height. Verify your PCB clearance requirements before selecting a taller substitute. Shorter variants (Rubycon VXH series at 1.063") may offer space advantages in compact designs.

Q: Which substitute is recommended for new designs?

A: For new designs, select from parts with "Active" product status. The Cornell Dubilier 337LMX400M2EF and Rubycon 400VXG330MEFC35X30 or 400VXH330MEFCSN35X25 are recommended based on active status, ROHS3 compliance, and extended 5000-hour lifetime ratings.

Q: Can I use the B43505C9337M000 as a substitute?

A: The B43505C9337M000 is classified as "Not For New Designs." It is suitable only for legacy system maintenance and direct replacement in existing applications where the original part is no longer available.

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