ECO-S2DA331AA Equivalent & Substitute Parts

Part Overview

The ECO-S2DA331AA is a 330 µF, 200 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-HA series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and extended operational life at elevated temperatures. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	200 V
Tolerance	±20%
Operating Temperature Range	-40°C to 105°C
Lifetime at Temperature	3000 Hrs @ 105°C
Polarization	Polar
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.787" (20.00 mm)
Mounting Type	Through Hole
Ripple Current @ 120 Hz	1.2 A
Ripple Current @ 100 kHz	1.68 A

Substitute Part Grouping Explanation

Substitute parts for the ECO-S2DA331AA must satisfy the following electrical and mechanical criteria:

Capacitance: 330 µF (exact match)
Voltage Rating: 200 V (exact match)
Tolerance: ±20% (exact match)
Operating Temperature Range: -40°C to 105°C (exact match)
Lifetime: 3000 Hrs @ 105°C (exact match)
Polarization: Polar (exact match)
Package Type: Radial, Can - Snap-In (exact match)
Lead Spacing: 0.394" (10.00 mm) (exact match)
Case Diameter: 0.787" (20.00 mm) (exact match)
Mounting Type: Through Hole (exact match)
Ripple Current @ 120 Hz: 1.2 A (exact match)

The following Nichicon parts meet all substitution criteria:

LGN2D331MELY30 (Nichicon LGN series)
LGU2D331MELY (Nichicon LGU series)

Both parts are manufactured by Nichicon, maintain active product status, and comply with ROHS3 standards, providing improved environmental compliance compared to the obsolete Panasonic original.

Parameter Comparison

Parameter	ECO-S2DA331AA (Panasonic)	LGN2D331MELY30 (Nichicon)	LGU2D331MELY (Nichicon)
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	200 V	200 V	200 V
Tolerance	±20%	±20%	±20%
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lifetime @ 105°C	3000 Hrs	3000 Hrs	3000 Hrs
Polarization	Polar	Polar	Polar
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Case Diameter	0.787" (20.00 mm)	0.787" (20.00 mm)	0.787" (20.00 mm)
Height (Seated Max)	1.654" (42.00 mm)	1.260" (32.00 mm)	1.378" (35.00 mm)
Ripple Current @ 120 Hz	1.2 A	1.2 A	1.2 A
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both LGN2D331MELY30 and LGU2D331MELY are direct functional equivalents to the ECO-S2DA331AA. Selection between these two Nichicon alternatives should be based on the following factors:

Physical Fit Considerations: The LGN2D331MELY30 has a seated height of 1.260" (32.00 mm), while the LGU2D331MELY measures 1.378" (35.00 mm). The original ECO-S2DA331AA has a seated height of 1.654" (42.00 mm). Both substitutes are physically shorter, which may require PCB layout verification to ensure clearance and mechanical stability in the mounting location.

Compliance Status: Both Nichicon parts are ROHS3 compliant and REACH unaffected, providing superior environmental compliance compared to the non-compliant original part. This is advantageous for new designs and systems subject to regulatory requirements.

Availability and Supply Chain: Both parts are currently in active production with confirmed inventory availability, ensuring long-term procurement reliability.

Frequently Asked Questions (FAQ)

Q: Can LGN2D331MELY30 and LGU2D331MELY be used interchangeably with ECO-S2DA331AA?

A: Both Nichicon parts satisfy all electrical and mechanical substitution criteria. The primary difference is seated height: LGN2D331MELY30 at 32.00 mm and LGU2D331MELY at 35.00 mm, compared to the original 42.00 mm. PCB layout verification is required to confirm physical fit in the intended mounting location.

Q: What is the impact of the height difference on circuit performance?

A: Height difference does not affect electrical performance. All three parts maintain identical capacitance, voltage rating, tolerance, temperature range, and ripple current specifications. Height variation only impacts mechanical fit and clearance considerations.

Q: Are the Nichicon substitutes suitable for high-temperature applications?

A: Yes. Both LGN2D331MELY30 and LGU2D331MELY maintain the same operating temperature range (-40°C to 105°C) and lifetime rating (3000 Hrs @ 105°C) as the original ECO-S2DA331AA.

Q: What is the difference between LGN and LGU series capacitors?

A: Both are Nichicon aluminum electrolytic capacitors meeting the same electrical specifications for this application. The series designation reflects internal design variations, but both deliver equivalent performance for the ECO-S2DA331AA replacement function.

Q: Are there any compliance advantages to using the Nichicon substitutes?

A: Yes. Both LGN2D331MELY30 and LGU2D331MELY are ROHS3 compliant, whereas the original ECO-S2DA331AA is non-compliant. This provides regulatory advantage for systems subject to environmental compliance requirements.

Q: How should I verify compatibility before implementation?

A: Confirm that the substitute part's seated height (32.00 mm or 35.00 mm) provides adequate clearance in your PCB layout. Verify that lead spacing (10.00 mm) and case diameter (20.00 mm) align with existing through-hole mounting positions. All electrical parameters are guaranteed equivalent.

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