ECO-S2GP331EX Equivalent & Substitute Parts

Part Overview

The ECO-S2GP331EX is a 330 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This part operates across -25°C to 85°C with a rated lifetime of 3000 hours at 85°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing production and maintenance applications requiring 330 µF, 400 V aluminum electrolytic capacitors with snap-in mounting.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	400 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00mm)
Case Diameter	1.378" (35.00mm)
Operating Temperature Range	-25°C ~ 85°C
Lifetime @ Temperature	3000 Hrs @ 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the ECO-S2GP331EX is determined by strict equivalence across the following parameters: capacitance (330 µF), voltage rating (400 V), tolerance (±20%), package type (radial, can snap-in), lead spacing (10.00mm), case diameter (35.00mm), and mounting type (through hole). Parts are grouped into three categories based on their relationship to the original specification:

Direct Equivalents maintain all critical electrical and mechanical parameters within the original design envelope, differing only in manufacturer, series designation, or minor height variations that do not affect board-level compatibility.

Upgrade Parts exceed the original specification in performance characteristics such as operating temperature range or lifetime rating while maintaining full mechanical and electrical compatibility.

Similar Parts share the same electrical specifications but differ in case diameter or height, requiring mechanical verification before substitution.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120Hz	Lifetime @ 85°C	Height (Max)	Product Status
ECO-S2GP331EX	Panasonic	330 µF	400 V	±20%	553 mOhm	3000 Hrs	1.181" (30.00mm)	Obsolete
380LQ331M400A012	Cornell Dubilier Electronics	330 µF	400 V	±20%	603 mOhm	2000 Hrs	1.063" (27.00mm)	Active
380LX331M400A022	Cornell Dubilier Electronics	330 µF	400 V	±20%	550 mOhm	3000 Hrs	1.260" (32.00mm)	Active
400USG330MEFC35X25	Rubycon	330 µF	400 V	±20%	—	3000 Hrs	1.063" (27.00mm)	Active
400USG330MEFCSN35X25	Rubycon	330 µF	400 V	±20%	—	3000 Hrs	1.063" (27.00mm)	Active
B43501C9337M000	EPCOS - TDK Electronics	330 µF	400 V	±20%	200 mOhm @ 100Hz	10000 Hrs	1.260" (32.00mm)	Not For New Designs
LGU2G331MELC	Nichicon	330 µF	400 V	±20%	—	3000 Hrs @ 105°C	1.181" (30.00mm)	Active
LGW2G331MELC30	Nichicon	330 µF	400 V	±20%	—	3000 Hrs @ 105°C	1.181" (30.00mm)	Active
380LQ331M400H052	Cornell Dubilier Electronics	330 µF	400 V	±20%	603 mOhm	2000 Hrs	2.047" (52.00mm)	Active
380LQ331M400J042	Cornell Dubilier Electronics	330 µF	400 V	±20%	603 mOhm	2000 Hrs	1.654" (42.00mm)	Active
380LQ331M400K022	Cornell Dubilier Electronics	330 µF	400 V	±20%	603 mOhm	2000 Hrs	1.260" (32.00mm)	Active

Engineering Selection Recommendations

Direct Equivalents for Standard Applications: 380LX331M400A022 (Cornell Dubilier Electronics) and 400USG330MEFC35X25 or 400USG330MEFCSN35X25 (Rubycon) provide direct electrical and mechanical compatibility with the ECO-S2GP331EX. The 380LX331M400A022 matches the original 3000-hour lifetime specification at 85°C with ESR of 550 mOhm, closely aligned to the original 553 mOhm specification. Both Rubycon parts maintain 3000-hour lifetime with identical case dimensions and lead spacing. The 400USG330MEFCSN35X25 variant includes RoHS3 compliance, suitable for applications requiring regulatory certification.

Upgrade Options for Enhanced Performance: LGU2G331MELC and LGW2G331MELC30 (Nichicon) offer extended operating temperature range (-25°C to 105°C) and maintain 3000-hour lifetime at the elevated 105°C rating. These parts are RoHS3 compliant and provide superior thermal performance for applications subject to higher ambient temperatures or thermal cycling. Height matches the original specification at 1.181" (30.00mm).

Alternative with Extended Lifetime: B43501C9337M000 (EPCOS - TDK Electronics) provides 10000-hour lifetime at 85°C with superior ESR of 200 mOhm at 100Hz. However, this part is classified as "Not For New Designs" and should be used only for legacy system maintenance where extended operational life is critical.

Mechanical Variants for Space-Constrained Applications: 380LQ331M400A012 and 380LQ331M400K022 (Cornell Dubilier Electronics) reduce height to 1.063" (27.00mm) and 1.260" (32.00mm) respectively, accommodating board layouts with vertical space constraints. Both maintain 330 µF, 400 V specifications with 2000-hour lifetime at 85°C.

Frequently Asked Questions (FAQ)

Q: Can 380LQ331M400A012 directly replace ECO-S2GP331EX? A: Yes, electrically and mechanically. The 380LQ331M400A012 maintains 330 µF, 400 V, ±20% tolerance, 10.00mm lead spacing, and 35.00mm case diameter. Height reduces from 1.181" to 1.063", which is compatible with standard board layouts. Lifetime specification decreases from 3000 to 2000 hours at 85°C; verify application requirements before substitution.

Q: What is the difference between 400USG330MEFC35X25 and 400USG330MEFCSN35X25? A: Both are Rubycon USG series parts with identical electrical specifications (330 µF, 400 V, 3000 Hrs @ 85°C) and dimensions. The primary difference is RoHS compliance: 400USG330MEFC35X25 is RoHS non-compliant, while 400USG330MEFCSN35X25 is RoHS3 compliant. Select based on regulatory requirements for your application.

Q: Why would I choose LGU2G331MELC or LGW2G331MELC30 over direct equivalents? A: These Nichicon upgrade parts extend the maximum operating temperature to 105°C and maintain 3000-hour lifetime at this elevated temperature. Select these for applications subject to sustained high ambient temperatures, thermal cycling, or where thermal margin is critical. Both are RoHS3 compliant.

Q: Are the Cornell Dubilier 380LQ variants with different heights (H052, J042, K022) interchangeable? A: All three 380LQ variants share identical electrical specifications (330 µF, 400 V, ±20%, 603 mOhm ESR, 2000 Hrs @ 85°C) and lead spacing (10.00mm). They differ only in case diameter and height. Substitution requires mechanical verification that the larger case diameter and height do not interfere with board layout or component clearances.

Q: What does "Not For New Designs" mean for B43501C9337M000? A: This EPCOS - TDK part is still available but the manufacturer does not recommend it for new product development. It may be used for replacement in existing systems or legacy applications where the extended 10000-hour lifetime at 85°C provides operational advantage. Verify long-term availability before committing to new designs.

Q: How do I verify mechanical compatibility when substituting? A: Confirm that case diameter (35.00mm for all listed parts), lead spacing (10.00mm for all listed parts), and seated height fit within your PCB layout constraints. The original ECO-S2GP331EX has 1.181" (30.00mm) height; parts with greater height may require clearance verification above the board surface.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message