ECO-S2GP331EA Equivalent & Substitute Parts

Part Overview

The ECO-S2GP331EA is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-UP series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring 3000 hours of operational life at 85°C. The part is currently obsolete, making equivalent and substitute components necessary for ongoing system support and new designs requiring compatible specifications.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution for the ECO-S2GP331EA is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 400 V (or higher)
Tolerance: ±20%
Package Type: Radial, Can - Snap-In
Lead Spacing: 0.394" (10.00 mm)
Diameter: 1.378" (35.00 mm)
Mounting Type: Through Hole
Operating Temperature Range: -25°C to 85°C minimum
Lifetime: 3000 Hours @ 85°C minimum

Variable Parameters (Allowed to Differ):

Height (seated): Variations permitted within mechanical envelope constraints
ESR (Equivalent Series Resistance): Variations permitted based on manufacturer design
Ripple Current ratings: Variations permitted based on frequency and manufacturer specifications
Product Status: Active or Not For New Designs acceptable; Obsolete not acceptable for substitutes
Compliance certifications: RoHS and REACH status may vary

Substitute parts are grouped into two categories: direct equivalents (matching all critical parameters) and upgrades (higher voltage rating with identical capacitance and package).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 120Hz	Lifetime @ 85°C	Height (Max)	Product Status	RoHS Status
ECO-S2GP331EA	Panasonic	330 µF	400 V	553 mOhm	3000 Hrs	1.378" (35.00 mm)	Obsolete	REACH Affected
380LQ331M400A012	Cornell Dubilier Electronics	330 µF	400 V	603 mOhm	2000 Hrs	1.063" (27.00 mm)	Active	ROHS3 Compliant
380LX331M400A022	Cornell Dubilier Electronics	330 µF	400 V	550 mOhm	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
380LX331M400A032	Cornell Dubilier Electronics	330 µF	400 V	502 mOhm	3000 Hrs	1.457" (37.00 mm)	Active	ROHS3 Compliant
400USG330MEFC35X25	Rubycon	330 µF	400 V	Not Specified	3000 Hrs	1.063" (27.00 mm)	Active	RoHS Non-Compliant
400USG330MEFCSN35X25	Rubycon	330 µF	400 V	Not Specified	3000 Hrs	1.063" (27.00 mm)	Active	ROHS3 Compliant
B43501C9337M000	EPCOS - TDK Electronics	330 µF	400 V	200 mOhm	10000 Hrs	1.260" (32.00 mm)	Not For New Designs	ROHS3 Compliant
ESMM401VSN331MA30S	Chemi-Con	330 µF	400 V	1.005 Ohm	3000 Hrs	1.260" (32.00 mm)	Active	RoHS Compliant
LLS2G331MELC	Nichicon	330 µF	400 V	Not Specified	3000 Hrs	1.181" (30.00 mm)	Active	ROHS3 Compliant
SLPX331M400H3P3	Cornell Dubilier Electronics	330 µF	400 V	603 mOhm	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
380LX331M450A032	Cornell Dubilier Electronics	330 µF	450 V	553 mOhm	3000 Hrs	1.457" (37.00 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (400 V Rating):

For applications requiring exact voltage specification, the following active parts provide direct substitution with matching 400 V ratings:

380LX331M400A022: Active status, ROHS3 compliant, 3000-hour lifetime matching the original specification, ESR of 550 mOhm closely aligned with the ECO-S2GP331EA at 553 mOhm.
SLPX331M400H3P3: Active status, ROHS3 compliant, 3000-hour lifetime, suitable for applications where ESR tolerance of 603 mOhm is acceptable.
LLS2G331MELC: Active status, ROHS3 compliant, 3000-hour lifetime, compact height of 1.181" (30.00 mm) for space-constrained designs.
400USG330MEFCSN35X25: Active status, ROHS3 compliant, 3000-hour lifetime, high inventory availability (274,082 units), compact height of 1.063" (27.00 mm).

Upgrade Option (450 V Rating):

380LX331M450A032: Provides higher voltage rating (450 V) with identical capacitance and package specifications. Active status, ROHS3 compliant, 3000-hour lifetime. Suitable for applications where increased voltage margin is required.

Not Recommended for New Designs:

B43501C9337M000: Marked "Not For New Designs" despite superior 10,000-hour lifetime and low ESR of 200 mOhm. Use only for legacy system maintenance where no alternative is available.

Conditional Use:

380LQ331M400A012: Active status, ROHS3 compliant, but lifetime specification of 2000 hours at 85°C falls below the 3000-hour requirement of the original part. Use only where reduced lifetime is acceptable.
400USG330MEFC35X25: Active status but RoHS non-compliant. Use only in applications where RoHS compliance is not required.
ESMM401VSN331MA30S: Active status, RoHS compliant, but ESR of 1.005 Ohm significantly exceeds the original 553 mOhm specification. Use only where higher ESR is tolerable.

Frequently Asked Questions (FAQ)

Q: Can I use a 450 V rated capacitor in place of a 400 V rated capacitor?

A: Yes. The 380LX331M450A032 operates at a higher voltage rating and is electrically compatible with 400 V applications. Higher voltage ratings provide additional safety margin and do not degrade performance in lower-voltage circuits.

Q: What is the significance of ESR (Equivalent Series Resistance) in capacitor substitution?

A: ESR affects ripple current handling, heat generation, and frequency response. The ECO-S2GP331EA specifies 553 mOhm at 120 Hz. Substitute parts with similar ESR values (such as 380LX331M400A022 at 550 mOhm) provide equivalent performance. Parts with significantly higher ESR (such as ESMM401VSN331MA30S at 1.005 Ohm) may generate excess heat in high-ripple-current applications.

Q: Does height variation affect mechanical compatibility?

A: Height variations are acceptable provided the substitute part fits within the available mounting space. The ECO-S2GP331EA has a maximum seated height of 1.378" (35.00 mm). Substitute parts with heights ranging from 1.063" to 1.457" are mechanically compatible with standard through-hole snap-in mounting, though taller parts (such as 380LX331M400A032 at 1.457") require verification of available clearance.

Q: What is the difference between "Active" and "Not For New Designs" product status?

A: "Active" parts are currently manufactured and recommended for new designs. "Not For New Designs" parts are still available but no longer recommended by the manufacturer for new applications. Use "Not For New Designs" parts only for legacy system maintenance or repair.

Q: Are RoHS and REACH compliance certifications important for substitution?

A: Compliance requirements depend on the application and regulatory jurisdiction. ROHS3-compliant parts (such as 380LX331M400A022 and SLPX331M400H3P3) are suitable for consumer electronics and EU markets. RoHS non-compliant parts (such as 400USG330MEFC35X25) may be restricted in certain applications. Verify compliance requirements for your specific application before selection.

Q: Can I substitute a part with a lower lifetime specification?

A: Substitution with lower lifetime specifications (such as 380LQ331M400A012 at 2000 hours versus the original 3000 hours) is not recommended for applications requiring the full 3000-hour operational life. Use only where reduced lifetime is acceptable or where the application duty cycle is significantly lower than the rated specification.

Q: What does "Ripple Current @ Low Frequency" and "Ripple Current @ High Frequency" mean?

A: These specifications indicate the maximum AC current the capacitor can safely handle at specific frequencies without exceeding temperature limits. The ECO-S2GP331EA supports 1.9 A at 120 Hz and 2.66 A at 100 kHz. Substitute parts with similar or higher ripple current ratings are compatible. Lower ratings may indicate reduced current-handling capability.

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