ECO-S2WB271EA Equivalent & Substitute Parts

Part Overview

The ECO-S2WB271EA 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 specified for general-purpose applications requiring radial, can-style snap-in mounting with through-hole configuration.

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)
Case Diameter	1.378" (35.00mm)
Operating Temperature Range	-25°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following 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)
Case Diameter: 1.378" (35.00mm) (exact match required)
Operating Temperature Range: -25°C to 105°C (exact match required)
Polarization: Polar (exact match required)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in ESR, ripple current ratings, and lifetime specifications do not disqualify substitution but indicate performance differences in specific application contexts.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	ESR @ 120Hz	Lifetime @ 105°C	Height (Max)	Product Status
ECO-S2WB271EA	Panasonic	TS-HB	270 µF	450 V	±20%	614 mOhm	3000 Hrs	1.378" (35.00mm)	Obsolete
381LQ271M450A022	Cornell Dubilier Electronics	381LQ	270 µF	450 V	±20%	675 mOhm	2000 Hrs	1.260" (32.00mm)	Active
381LX271M450A032	Cornell Dubilier Electronics	381LX	270 µF	450 V	±20%	—	3000 Hrs	1.457" (37.00mm)	Active
450HXG270MEFC35X30	Rubycon	HXG	270 µF	450 V	±20%	—	3000 Hrs	1.260" (32.00mm)	Active
450MXG270MEFCSN35X30	Rubycon	MXG	270 µF	450 V	±20%	—	3000 Hrs	1.260" (32.00mm)	Active
450NXG270MEFC35X30	Rubycon	NXG	270 µF	450 V	±20%	—	10000 Hrs	1.260" (32.00mm)	Active
450VXG270MEFC35X30	Rubycon	VXG	270 µF	450 V	±20%	—	5000 Hrs	1.260" (32.00mm)	Active
450VXG270MEFCSN35X30	Rubycon	VXG	270 µF	450 V	±20%	—	5000 Hrs	1.260" (32.00mm)	Active
450VXH270MEFC35X30	Rubycon	VXH	270 µF	450 V	±20%	—	5000 Hrs	1.260" (32.00mm)	Active
450VXH270MEFCSN35X30	Rubycon	VXH	270 µF	450 V	±20%	—	5000 Hrs	1.260" (32.00mm)	Active
EKMS451VSN271MA30S	Chemi-Con	KMS	270 µF	450 V	±20%	—	3000 Hrs	1.280" (32.50mm)	Active

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing status, providing supply continuity for the obsolete ECO-S2WB271EA. Selection should be based on the following criteria:

RoHS Compliance: Most substitute parts carry ROHS3 compliance certification. The 450VXG270MEFC35X30 is marked as RoHS non-compliant and should be avoided in applications requiring RoHS certification.

REACH Status: All substitute parts are either REACH Unaffected or REACH Compliant, with the exception of the original ECO-S2WB271EA, which is REACH Affected. This distinction is relevant for applications subject to REACH regulations.

Lifetime Rating: Substitute parts offer lifetime ratings ranging from 2000 to 10000 hours at 105°C. The 450NXG270MEFC35X30 provides the highest lifetime rating at 10000 hours, suitable for extended-life applications. The 381LQ271M450A022 offers the lowest rating at 2000 hours and should be selected only when lifetime requirements are less stringent.

Physical Dimensions: Height variations exist among substitutes. The 381LX271M450A032 has a maximum seated height of 1.457" (37.00mm), which exceeds the original part's 1.378" (35.00mm). This may require PCB layout verification. Most other substitutes maintain a 1.260" (32.00mm) height, which is compatible with the original footprint.

Inventory Availability: Rubycon parts, particularly 450MXG270MEFCSN35X30 and 450VXG270MEFC35X30, show the highest inventory levels, ensuring supply reliability.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement?

A: All listed parts meet the core electrical and mechanical specifications (270 µF, 450 V, ±20% tolerance, radial snap-in package, 10mm lead spacing, 35mm diameter). However, physical height variations and lifetime ratings differ. Verify PCB clearance and application lifetime requirements before selection.

Q: What is the difference between parts with and without "SN" in the part number?

A: The "SN" designation indicates snap-in terminal configuration. Both variants maintain identical electrical specifications and physical footprints. Selection depends on your specific snap-in terminal requirements.

Q: Does RoHS compliance matter for my application?

A: RoHS compliance is mandatory for products sold in the European Union and many other markets. If your application is subject to RoHS regulations, avoid the 450VXG270MEFC35X30, which is marked as RoHS non-compliant. All other substitutes carry ROHS3 compliance.

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

A: The 450NXG270MEFC35X30 provides the highest lifetime rating at 10000 hours at 105°C, compared to the original part's 3000 hours. This makes it suitable for applications requiring extended operational life.

Q: Are there height restrictions I should consider?

A: The 381LX271M450A032 has a maximum height of 1.457" (37.00mm), exceeding the original 1.378" (35.00mm). If your PCB layout has height constraints, select from parts with 1.260" (32.00mm) or 1.280" (32.50mm) maximum heights.

Q: What is the significance of ESR values?

A: ESR (Equivalent Series Resistance) affects ripple current handling and heat dissipation. The original part specifies 614 mOhm at 120 Hz. The 381LQ271M450A022 specifies 675 mOhm, indicating slightly higher resistance. Parts without specified ESR values should be evaluated against your specific ripple current requirements.

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