ECO-S2WB181CA 180µF 450V Aluminum Electrolytic Capacitor Equivalent & Substitute Parts

Part Overview

The ECO-S2WB181CA is a 180 µF, 450 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-HB series. This radial, can-style snap-in capacitor is designed for general-purpose applications with a rated lifetime of 3000 hours at 105°C. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring compatible specifications.

Key Parameters

Parameter	Value
Capacitance	180 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00mm)
Diameter	0.984" (25.00mm)
Mounting Type	Through Hole
Operating Temperature Range	-25°C to 105°C
Polarization	Polar
Lifetime @ Temperature	3000 Hrs @ 105°C (minimum)

Substitute Part Grouping Explanation

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

Capacitance: 180 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" (10.00mm) (exact match required)
Diameter: 0.984" (25.00mm) (exact match required)
Mounting Type: Through Hole (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 mandatory criteria. Height variations and lifetime ratings above the minimum 3000 hours at 105°C are permissible. Ripple current ratings and ESR values may vary within the electrical performance envelope of the application.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Height (Max)	Lifetime @ 105°C	Product Status	RoHS Status
ECO-S2WB181CA	Panasonic	TS-HB	180 µF	450 V	±20%	1.772" (45.00mm)	3000 Hrs	Obsolete	REACH Affected
381LX181M450J452	Cornell Dubilier Electronics	381LX	180 µF	450 V	±20%	1.850" (47.00mm)	3000 Hrs	Active	ROHS3 Compliant
450HXG180MEFC25X35	Rubycon	HXG	180 µF	450 V	±20%	1.457" (37.00mm)	3000 Hrs	Active	ROHS3 Compliant
450MXG180MEFCSN25X30	Rubycon	MXG	180 µF	450 V	±20%	1.260" (32.00mm)	3000 Hrs	Active	ROHS3 Compliant
450MXG180MEFCSN25X35	Rubycon	MXG	180 µF	450 V	±20%	1.457" (37.00mm)	3000 Hrs	Active	ROHS3 Compliant
450MXK180MEFCSN25X30	Rubycon	MXK	180 µF	450 V	±20%	1.260" (32.00mm)	3000 Hrs	Active	ROHS3 Compliant
450VXG180MEFCSN25X35	Rubycon	VXG	180 µF	450 V	±20%	1.457" (37.00mm)	5000 Hrs	Active	ROHS3 Compliant
450VXH180MEFCSN25X30	Rubycon	VXH	180 µF	450 V	±20%	1.260" (32.00mm)	5000 Hrs	Active	ROHS3 Compliant
LGU2W181MELA	Nichicon	LGU	180 µF	450 V	±20%	1.575" (40.00mm)	3000 Hrs	Active	ROHS3 Compliant
LGW2W181MELA40	Nichicon	LGW	180 µF	450 V	±20%	1.575" (40.00mm)	3000 Hrs	Active	ROHS3 Compliant
381LQ181M450K022	Cornell Dubilier Electronics	381LQ	180 µF	450 V	±20%	1.260" (32.00mm)	2000 Hrs	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts meet the mandatory electrical and mechanical parameters required for direct replacement of the ECO-S2WB181CA. Selection should be based on the following criteria:

Active Product Status: Parts with Active product status (all Rubycon, Nichicon, and Cornell Dubilier Electronics substitutes listed) are preferred for new designs and ongoing procurement. The original ECO-S2WB181CA is obsolete and no longer manufactured.

Compliance and Certifications: All substitute parts are ROHS3 Compliant and REACH Unaffected, ensuring regulatory compliance for current manufacturing standards. The original part is REACH Affected, making substitution necessary for new applications.

Height Considerations: Substitute parts vary in maximum seated height from 1.260" (32.00mm) to 1.850" (47.00mm). The original part measures 1.772" (45.00mm). Parts with reduced height (1.260" to 1.457") offer space optimization benefits. Parts with increased height (1.850") require verification of available board space.

Lifetime Rating: Parts rated for 5000 hours at 105°C (Rubycon VXG and VXH series) provide extended operational life compared to the original 3000-hour rating. The Cornell Dubilier 381LQ series offers 2000 hours at 105°C and is suitable only for applications with reduced lifetime requirements.

Inventory Availability: Rubycon 450HXG180MEFC25X35 and 450VXH180MEFCSN25X30 offer the highest inventory levels (273,782 and 273,982 units respectively), ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height than the original ECO-S2WB181CA?

A: Yes, provided the substitute part fits within the available board space. The original part measures 1.772" (45.00mm) in height. Substitute parts range from 1.260" to 1.850". Verify mechanical clearance in your specific application before selection.

Q: Are all listed substitute parts pin-compatible with the ECO-S2WB181CA?

A: Yes. All substitute parts maintain the same lead spacing of 0.394" (10.00mm), diameter of 0.984" (25.00mm), and through-hole mounting configuration. Direct mechanical and electrical substitution is possible without PCB modification.

Q: What is the difference between 3000-hour and 5000-hour rated parts?

A: The lifetime rating indicates the expected operational duration at 105°C ambient temperature. Parts rated for 5000 hours (Rubycon VXG and VXH series) provide extended service life. Selection depends on application requirements and expected operating conditions.

Q: Why is the original ECO-S2WB181CA listed as obsolete?

A: Panasonic has discontinued the TS-HB series. Active substitute parts from Rubycon, Nichicon, and Cornell Dubilier Electronics are available and meet all electrical and mechanical specifications of the original part.

Q: Do I need to test substitute parts before deployment?

A: All listed substitute parts meet the specified electrical and mechanical parameters. Verification of physical fit within your specific PCB layout is recommended due to height variations among substitute options.

Q: Are there any compliance differences between the original and substitute parts?

A: Yes. The original ECO-S2WB181CA is REACH Affected. All active substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for new manufacturing and deployment.

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