ECO-S2WP331DA Equivalent & Substitute Parts

Part Overview

The ECO-S2WP331DA is a 330 µF, 450 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 with a rated lifetime of 3000 hours at 85°C. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this capacitance and voltage rating.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.181" (30.00 mm)
Operating Temperature Range	-25°C to 85°C
Lifetime @ Temperature	3000 Hrs @ 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the ECO-S2WP331DA is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution 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)
Case Diameter: 1.181" (30.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Secondary Compatibility Parameters:

Operating Temperature Range: -25°C to 85°C or wider
Lifetime @ Temperature: 3000 Hrs @ 85°C or greater
ESR (Equivalent Series Resistance): Varies by manufacturer; lower values indicate better performance
Ripple Current Ratings: Must support application requirements

All substitute parts listed meet the core substitution criteria. Variations in ESR, lifetime ratings, and ripple current capacity are noted for engineering selection based on specific application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120Hz	Lifetime @ 85°C	Height (Max)	Product Status
ECO-S2WP331DA	Panasonic	330 µF	450 V	±20%	553 mOhm	3000 Hrs	1.969" (50.00 mm)	Obsolete
380LQ331M450K042	Cornell Dubilier Electronics	330 µF	450 V	±20%	603 mOhm	2000 Hrs	1.654" (42.00 mm)	Active
380LX331M450K052	Cornell Dubilier Electronics	330 µF	450 V	±20%	550 mOhm	3000 Hrs	2.047" (52.00 mm)	Active
450USG330MEFC30X35	Rubycon	330 µF	450 V	±20%	—	3000 Hrs	1.457" (37.00 mm)	Active
450USG330MEFCSN30X35	Rubycon	330 µF	450 V	±20%	—	3000 Hrs	1.457" (37.00 mm)	Active
450USK330MEFCSN30X30	Rubycon	330 µF	450 V	±20%	—	3000 Hrs	1.260" (32.00 mm)	Active
B43501B5337M000	EPCOS - TDK Electronics	330 µF	450 V	±20%	400 mOhm	10000 Hrs	2.047" (52.00 mm)	Active
ESMM451VSN331MR40S	Chemi-Con	330 µF	450 V	±20%	1.005 Ohm	3000 Hrs	1.654" (42.00 mm)	Active
LLS2W331MELB	Nichicon	330 µF	450 V	±20%	—	3000 Hrs	1.575" (40.00 mm)	Active
SLPX331M450E7P3	Cornell Dubilier Electronics	330 µF	450 V	±20%	804 mOhm	3000 Hrs	1.575" (40.00 mm)	Active
LGU2W331MELB	Nichicon	330 µF	450 V	±20%	—	3000 Hrs @ 105°C	1.969" (50.00 mm)	Active

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

The 380LX331M450K052 (Cornell Dubilier Electronics) and 450USG330MEFCSN30X35 (Rubycon) are direct substitutes meeting all core parameters with active product status. The 380LX331M450K052 matches the original ESR specification (550 mOhm vs. 553 mOhm) and maintains the 3000-hour lifetime rating. The 450USG330MEFCSN30X35 offers RoHS3 compliance and a more compact height profile (1.457" vs. 1.969").

High-Reliability Alternative:

The B43501B5337M000 (EPCOS - TDK Electronics) provides extended lifetime (10000 hours at 85°C) with superior ESR performance (400 mOhm @ 100Hz) and RoHS3 compliance. This part is suitable for applications requiring enhanced reliability and longer service intervals.

Extended Temperature Operation:

The LGU2W331MELB (Nichicon) extends the operating temperature range to 105°C with a 3000-hour lifetime at that elevated temperature. This upgrade option is applicable for systems operating in high-temperature environments while maintaining mechanical and electrical compatibility.

Compact Form Factor:

The 450USK330MEFCSN30X30 (Rubycon) provides the most compact height (1.260") while maintaining all electrical specifications, suitable for space-constrained applications.

Compliance Considerations:

All active substitute parts carry RoHS3 compliance or are RoHS non-compliant. The 450USG330MEFC30X35 is RoHS non-compliant; select RoHS3-compliant alternatives (380LX331M450K052, 450USG330MEFCSN30X35, B43501B5337M000, LLS2W331MELB, SLPX331M450E7P3, LGU2W331MELB) for applications requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height?

A: Yes. All substitute parts maintain the same case diameter (1.181" / 30.00 mm) and lead spacing (0.394" / 10.00 mm). Height variations range from 1.260" to 2.047". Verify available board space and clearance before selection. Taller parts (380LX331M450K052, B43501B5337M000, LGU2W331MELB at 2.047") may require additional clearance verification.

Q: What is the significance of ESR differences?

A: Equivalent Series Resistance (ESR) affects ripple current handling and heat dissipation. Lower ESR values (B43501B5337M000 at 400 mOhm) provide better performance in high-ripple-current applications. Higher ESR values (ESMM451VSN331MR40S at 1.005 Ohm) are acceptable for general-purpose applications but may generate more heat under ripple current stress.

Q: Are all substitutes mechanically compatible?

A: Yes. All substitute parts use identical lead spacing (0.394" / 10.00 mm), case diameter (1.181" / 30.00 mm), and snap-in mounting configuration. Height variations do not affect mechanical compatibility on standard through-hole PCB layouts.

Q: Which substitute offers the best long-term reliability?

A: The B43501B5337M000 (EPCOS - TDK Electronics) provides 10000-hour lifetime at 85°C, compared to 3000 hours for most alternatives. The LGU2W331MELB (Nichicon) extends lifetime to 3000 hours at 105°C for elevated-temperature applications.

Q: Do I need to verify RoHS compliance?

A: If your application or market requires RoHS compliance, select from RoHS3-compliant parts: 380LQ331M450K042, 380LX331M450K052, 450USG330MEFCSN30X35, B43501B5337M000, LLS2W331MELB, SLPX331M450E7P3, and LGU2W331MELB. Avoid 450USG330MEFC30X35, which is RoHS non-compliant.

Q: Can I substitute with a part having lower lifetime rating?

A: The 380LQ331M450K042 has a 2000-hour lifetime at 85°C, compared to 3000 hours for the original part. This substitution is acceptable only if your application duty cycle and thermal environment support the reduced lifetime specification.

Q: What is the inventory status of these parts?

A: All substitute parts are in active production with available inventory. The LLS2W331MELB (Nichicon) has the highest inventory level (1,000,400 pcs), followed by 450USG330MEFC30X35 (Rubycon) with 273,882 pcs. Verify current availability with your supplier for production quantities.

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