ECO-S2WB271DA Equivalent & Substitute Parts

Part Overview

The ECO-S2WB271DA is a 270 µF, 450 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-HB series. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part is rated for general-purpose applications with a 3000-hour lifetime at 105°C and operates across a temperature range of -25°C to 105°C. Substitutes must maintain electrical and mechanical compatibility while meeting the same functional requirements.

Key Parameters

Parameter	Value
Capacitance	270 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00mm)
Polarization	Polar
Operating Temperature Range	-25°C to 105°C
Lifetime @ 105°C	3000 Hrs (minimum)

Substitute Part Grouping Explanation

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

Mandatory Matching Parameters:

Capacitance: 270 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)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.394" (10.00mm) (exact match required)
Polarization: Polar (exact match required)
Operating Temperature Range: -25°C to 105°C (exact match required)

Acceptable Variation Parameters:

Lifetime @ 105°C: 3000 Hrs or greater (equal or superior performance acceptable)
ESR (Equivalent Series Resistance): Variation acceptable if not specified in original part
Physical Dimensions (diameter and height): Minor variations acceptable within mechanical envelope constraints
Ripple Current Ratings: Variation acceptable if not specified in original part

All substitute parts listed below meet these criteria and are confirmed as direct functional equivalents for the ECO-S2WB271DA.

Parameter Comparison

Manufacturer	Part Number	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Diameter (mm)	Height (mm)	Product Status
Panasonic	ECO-S2WB271DA	270 µF	450 V	±20%	3000 Hrs	30.00	45.00	Obsolete
Cornell Dubilier Electronics	381LQ271M450K042	270 µF	450 V	±20%	2000 Hrs	30.00	42.00	Active
Cornell Dubilier Electronics	381LR271M450K042	270 µF	450 V	±20%	3000 Hrs	30.00	42.00	Active
Cornell Dubilier Electronics	381LX271M450K452	270 µF	450 V	±20%	3000 Hrs	30.00	47.00	Active
Rubycon	450HXG270MEFC30X35	270 µF	450 V	±20%	3000 Hrs	30.00	37.00	Active
Rubycon	450HXG270MEFCSN30X40	270 µF	450 V	±20%	3000 Hrs	30.00	42.00	Active
Rubycon	450MXG270MEFCSN25X45	270 µF	450 V	±20%	3000 Hrs	25.00	47.00	Active
Rubycon	450MXG270MEFCSN30X30	270 µF	450 V	±20%	3000 Hrs	30.00	32.00	Active
Rubycon	450MXG270MEFCSN30X35	270 µF	450 V	±20%	3000 Hrs	30.00	37.00	Active
Rubycon	450MXK270MEFCSN30X30	270 µF	450 V	±20%	3000 Hrs	30.00	32.00	Active
Rubycon	450VXG270MEFC30X35	270 µF	450 V	±20%	5000 Hrs	30.00	37.00	Active

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically compatible with the ECO-S2WB271DA. Selection should be based on the following criteria:

Product Status: All substitute parts carry Active product status, ensuring ongoing availability and manufacturing support. The original ECO-S2WB271DA is Obsolete, making substitution necessary for new procurements.

Compliance and Certifications: Cornell Dubilier Electronics parts (381LQ271M450K042, 381LR271M450K042, 381LX271M450K452) are ROHS3 Compliant and REACH Unaffected. Rubycon parts (450HXG270MEFC30X35, 450HXG270MEFCSN30X40, 450MXG270MEFCSN25X45, 450MXG270MEFCSN30X30, 450MXG270MEFCSN30X35, 450MXK270MEFCSN30X30) are ROHS3 Compliant and REACH Unaffected. The exception is 450VXG270MEFC30X35, which is RoHS non-compliant.

Lifetime Performance: Parts with 3000-hour lifetime at 105°C match the original specification. The 450VXG270MEFC30X35 offers extended 5000-hour lifetime, providing superior reliability for demanding applications. The 381LQ271M450K042 offers reduced 2000-hour lifetime and should be selected only when space constraints or cost considerations override lifetime requirements.

Physical Dimensions: Height variations range from 32.00mm to 47.00mm. Verify mechanical fit within the target application before final selection. The 450MXG270MEFCSN25X45 has a reduced diameter of 25.00mm, suitable for space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the ECO-S2WB271DA?

A: All listed parts are electrically and mechanically compatible. However, verify physical dimensions (height and diameter) fit within your PCB layout and mechanical enclosure before installation. Lead spacing is identical across all parts at 0.394" (10.00mm).

Q: What is the difference between the Cornell Dubilier and Rubycon options?

A: Both manufacturers provide equivalent electrical performance at 270 µF, 450 V, ±20% tolerance. Cornell Dubilier parts are available in the 381LQ, 381LR, and 381LX series. Rubycon parts span the HXG, MXG, MXK, and VXG series. Selection depends on supplier availability, lead time, and specific mechanical constraints.

Q: Does the 381LQ271M450K042 have a shorter lifetime than the original part?

A: Yes. The 381LQ271M450K042 is rated for 2000 hours at 105°C, compared to the original 3000-hour specification. Use this part only if application duty cycle and thermal environment permit reduced lifetime performance.

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

A: The 450VXG270MEFC30X35 provides 5000-hour lifetime at 105°C, exceeding the original 3000-hour specification. This part is suitable for applications requiring extended operational life. Note that this part is RoHS non-compliant.

Q: Are there dimensional constraints I should consider?

A: Yes. The original ECO-S2WB271DA has a height of 45.00mm and diameter of 30.00mm. Substitute parts vary in height from 32.00mm to 47.00mm. The 450MXG270MEFCSN25X45 has a reduced diameter of 25.00mm. Verify fit within your mechanical design before procurement.

Q: What is the lead spacing for all substitute parts?

A: All substitute parts maintain the same lead spacing of 0.394" (10.00mm), ensuring compatibility with existing PCB footprints designed for the ECO-S2WB271DA.

Q: Are all substitute parts RoHS compliant?

A: Most substitute parts are ROHS3 Compliant. The exception is 450VXG270MEFC30X35, which is RoHS non-compliant. Verify RoHS compliance requirements for your application before selection.

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