ECO-S2WP221CX Equivalent & Substitute Parts

Part Overview

The ECO-S2WP221CX is a 220 µF, 450 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-UP series. This radial, can-style snap-in capacitor is rated for 3000 hours at 85°C with an ESR of 754 mOhm at 120 Hz. The part is currently obsolete, making equivalent and substitute components necessary for ongoing system support and new designs requiring this capacitance and voltage rating.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-25°C ~ 85°C
Lifetime @ Temperature	3000 Hrs @ 85°C
Polarization	Polar
Applications	General Purpose

Substitute Part Grouping Explanation

Substitution for the ECO-S2WP221CX is determined by the following mandatory parameters:

Capacitance: 220 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)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Substitute parts are grouped into three categories:

Direct Substitutes maintain all core electrical and mechanical parameters, differing only in manufacturer, series designation, or minor performance characteristics such as ESR or ripple current ratings. These parts are functionally interchangeable in the ECO-S2WP221CX application.

Upgrade Substitutes exceed the original specifications in lifetime rating (3000 Hrs @ 105°C versus 3000 Hrs @ 85°C) or operating temperature range (-25°C ~ 105°C versus -25°C ~ 85°C), providing enhanced reliability for demanding applications while maintaining all core mechanical and electrical parameters.

Similar Parts share the same capacitance, voltage, tolerance, and mounting type but differ in physical dimensions (diameter or height), which may affect board layout compatibility. These require mechanical verification before implementation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	ESR @ Frequency	Lifetime @ Temp	Operating Temp Range	Size Dia (mm)	Height (mm)	Product Status	RoHS Status
ECO-S2WP221CX	Panasonic	TS-UP	220 µF	450 V	±20%	754 mOhm @ 120 Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	25.00	45.00	Obsolete	-
450USG220MEFCSN25X35	Rubycon	USG	220 µF	450 V	±20%	-	3000 Hrs @ 85°C	-25°C ~ 85°C	25.00	37.00	Active	ROHS3 Compliant
450USK220MEFCSN25X30	Rubycon	USK	220 µF	450 V	±20%	-	3000 Hrs @ 85°C	-25°C ~ 85°C	25.00	32.00	Active	-
B43501B5227M000	EPCOS - TDK Electronics	B43501	220 µF	450 V	±20%	600 mOhm @ 100 Hz	10000 Hrs @ 85°C	-40°C ~ 85°C	25.00	52.00	Active	ROHS3 Compliant
LLS2W221MELA	Nichicon	LLS	220 µF	450 V	±20%	-	3000 Hrs @ 85°C	-25°C ~ 85°C	25.00	40.00	Active	ROHS3 Compliant
SLPX221M450C7P3	Cornell Dubilier Electronics (CDE)	SLPX	220 µF	450 V	±20%	1.206 Ohm @ 120 Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	25.00	40.00	Active	ROHS3 Compliant
LGU2W221MELA	Nichicon	LGU	220 µF	450 V	±20%	-	3000 Hrs @ 105°C	-25°C ~ 105°C	25.00	45.00	Active	ROHS3 Compliant
LGW2W221MELA45	Nichicon	LGW	220 µF	450 V	±20%	-	3000 Hrs @ 105°C	-25°C ~ 105°C	25.00	45.00	Active	ROHS3 Compliant
380LQ221M450A012	Cornell Dubilier Electronics (CDE)	380LQ	220 µF	450 V	±20%	904 mOhm @ 120 Hz	2000 Hrs @ 85°C	-25°C ~ 85°C	35.00	27.00	Active	ROHS3 Compliant
380LQ221M450H452	Cornell Dubilier Electronics (CDE)	380LQ	220 µF	450 V	±20%	900 mOhm @ 120 Hz	2000 Hrs @ 85°C	-25°C ~ 85°C	22.00	47.00	Active	ROHS3 Compliant
380LQ221M450J042	Cornell Dubilier Electronics (CDE)	380LQ	220 µF	450 V	±20%	904 mOhm @ 120 Hz	2000 Hrs @ 85°C	-25°C ~ 85°C	25.00	42.00	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Substitution (Equivalent Replacement):

The Rubycon 450USG220MEFCSN25X35, 450USK220MEFCSN25X30, Nichicon LLS2W221MELA, and Cornell Dubilier SLPX221M450C7P3 are active production parts that maintain the core electrical specifications of the ECO-S2WP221CX. All are ROHS3 compliant. The Rubycon USK variant offers the most compact height (32.00 mm) compared to the original 45.00 mm, which may provide board layout advantages. The EPCOS B43501B5227M000 provides extended lifetime (10000 Hrs @ 85°C) and lower ESR (600 mOhm @ 100 Hz) with ROHS3 compliance, though it requires additional height clearance (52.00 mm).

For Enhanced Reliability (Upgrade Substitution):

The Nichicon LGU2W221MELA and LGW2W221MELA45 are recommended for applications requiring higher operating temperature capability (105°C maximum) and extended thermal performance (3000 Hrs @ 105°C). Both are ROHS3 compliant and maintain the original 25.00 mm diameter and 45.00 mm height. The LGW2W221MELA45 offers significantly higher inventory availability (528,268 pieces).

For Layout-Constrained Applications (Similar Parts):

The Cornell Dubilier 380LQ series parts (380LQ221M450A012, 380LQ221M450H452, 380LQ221M450J042) maintain electrical compatibility but differ in physical dimensions. These are suitable only when board layout constraints require alternative form factors. Note that these parts specify 2000 Hrs @ 85°C lifetime, which is lower than the original specification.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different physical dimensions?

A: Physical dimensions must be verified against your PCB layout. The original ECO-S2WP221CX measures 25.00 mm diameter by 45.00 mm height. Direct substitutes from Rubycon and Nichicon maintain the 25.00 mm diameter but vary in height (32.00 mm to 45.00 mm). The Cornell Dubilier 380LQ series offers different diameter options (22.00 mm to 35.00 mm) and should only be used if board layout permits the dimensional change.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain all original electrical and thermal specifications. Upgrade substitutes exceed the original specifications—specifically, they operate at higher maximum temperatures (105°C versus 85°C) and provide longer lifetime ratings at elevated temperatures (3000 Hrs @ 105°C versus 3000 Hrs @ 85°C). Upgrade substitutes are backward compatible and suitable for any application requiring the original part.

Q: Are all substitute parts RoHS compliant?

A: Most active production substitutes listed are ROHS3 compliant. The Rubycon 450USK220MEFCSN25X30 does not specify RoHS status in the provided data. Verify RoHS compliance requirements for your specific application before selection.

Q: Why do some substitute parts have lower lifetime ratings?

A: The Cornell Dubilier 380LQ series parts specify 2000 Hrs @ 85°C lifetime, compared to the original 3000 Hrs @ 85°C. These parts are classified as similar rather than direct substitutes due to this reduced lifetime specification. Use these parts only when dimensional constraints require them and when the reduced lifetime is acceptable for your application.

Q: What is ESR and why does it vary among substitutes?

A: Equivalent Series Resistance (ESR) affects capacitor performance in high-frequency applications and ripple current handling. The original ECO-S2WP221CX specifies 754 mOhm @ 120 Hz. Substitute parts with lower ESR (such as EPCOS B43501B5227M000 at 600 mOhm @ 100 Hz) provide improved performance in demanding applications. Substitutes without specified ESR values should be evaluated based on ripple current ratings at your operating frequency.

Q: Can I substitute the ECO-S2WP221CX in a new design?

A: Yes. The Nichicon LGW2W221MELA45 is recommended for new designs due to its active production status, high inventory availability, ROHS3 compliance, and enhanced thermal performance (3000 Hrs @ 105°C). This part maintains the original form factor and is a direct upgrade.

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