Equivalent & Substitute Parts for 225CKS250M

Part Overview

The 225CKS250M is a 2.2 µF, 250 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general-purpose applications requiring through-hole mounting. The CKS series operates across -25°C to 85°C with a rated lifetime of 2000 hours at 85°C.

Substitute parts become necessary when the original component reaches end-of-life, inventory constraints occur, or application requirements demand enhanced performance characteristics such as extended operating temperature ranges, reduced equivalent series resistance, or extended lifetime ratings at elevated temperatures.

Key Parameters

Parameter	Value	Unit
Capacitance	2.2	µF
Voltage - Rated	250	V
Tolerance	±20%	-
Polarization	Polar	-
Package / Case	Radial, Can	-
Mounting Type	Through Hole	-
Lead Spacing	0.098" (2.50mm)	-
Size / Dimension	0.248" Dia (6.30mm)	-
Operating Temperature Range	-25°C ~ 85°C	-
Lifetime @ Temperature	2000 Hrs @ 85°C	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the 225CKS250M is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

Capacitance: 2.2 µF (exact match required)
Voltage Rating: 250 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package / Case: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.098" (2.50mm) (exact match required)
Size / Dimension: 0.248" Dia (6.30mm) (exact match required)

Performance Enhancement Parameters (Substitutes may exceed original specifications):

Operating Temperature Range (may be extended)
Lifetime @ Temperature (may be extended)
ESR - Equivalent Series Resistance (may be reduced)
Ripple Current ratings (may be increased)

All substitute parts listed maintain identical electrical and mechanical specifications for mandatory parameters while offering improvements in thermal performance, reliability, or electrical characteristics.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Operating Temp	Lifetime @ Temp	ESR @ 120Hz	Product Status
225CKS250M	Cornell Dubilier / Illinois Capacitor	CKS	2.2 µF	250 V	±20%	-25°C ~ 85°C	2000 Hrs @ 85°C	150.715 Ohm	Active
225CKH250M	Cornell Dubilier / Illinois Capacitor	CKH	2.2 µF	250 V	±20%	-25°C ~ 105°C	2000 Hrs @ 105°C	113.036 Ohm	Active
ECA-2EM2R2	Panasonic Electronic Components	M-A	2.2 µF	250 V	±20%	-25°C ~ 85°C	2000 Hrs @ 85°C	Not Specified	Active
UVR2E2R2MED	Nichicon	UVR	2.2 µF	250 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	Not Specified	Obsolete
250LEX2.2MEFC6.3X11	Rubycon	LEX	2.2 µF	250 V	±20%	-40°C ~ 125°C	4000 Hrs @ 125°C	Not Specified	Active
250LLE2.2MEFC6.3X11	Rubycon	LLE	2.2 µF	250 V	±20%	-40°C ~ 105°C	12000 Hrs @ 105°C	Not Specified	Active
ECA-2EHG2R2	Panasonic Electronic Components	NHG-A	2.2 µF	250 V	±20%	-25°C ~ 105°C	2000 Hrs @ 105°C	Not Specified	Active

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

ECA-2EM2R2 (Panasonic) serves as a direct functional equivalent to 225CKS250M. Both components share identical electrical specifications and operating temperature range. This part maintains Active product status and ROHS3 compliance. Selection of this substitute is appropriate when component availability or supply chain considerations require manufacturer diversification while maintaining identical performance characteristics.

For Enhanced Thermal Performance:

225CKH250M (Cornell Dubilier) provides improved thermal performance over the original 225CKS250M. The extended operating temperature range (-25°C to 105°C versus -25°C to 85°C) and reduced ESR (113.036 Ohm versus 150.715 Ohm) make this substitute suitable for applications requiring improved thermal stability. This part maintains Active product status and is manufactured by the original equipment supplier.

ECA-2EHG2R2 (Panasonic) offers equivalent thermal enhancement with extended operating temperature to 105°C. This substitute is appropriate when Panasonic component qualification is required alongside thermal performance improvement.

For Extended Lifetime Applications:

250LLE2.2MEFC6.3X11 (Rubycon) provides the highest lifetime rating at 12000 hours at 105°C, compared to 2000 hours at 85°C for the original part. This substitute is appropriate for applications requiring extended service life or operation in elevated temperature environments. Extended operating temperature range (-40°C to 105°C) provides additional thermal margin.

250LEX2.2MEFC6.3X11 (Rubycon) offers the widest operating temperature range (-40°C to 125°C) with 4000-hour lifetime at 125°C. This substitute is appropriate for applications requiring maximum thermal headroom or operation in extreme temperature environments.

Obsolete Component Consideration:

UVR2E2R2MED (Nichicon) carries Obsolete product status. This part should not be selected for new designs or long-term supply requirements. Existing inventory may be used for legacy system maintenance only.

All recommended substitutes maintain ROHS3 compliance and REACH Unaffected status consistent with the original 225CKS250M.

Frequently Asked Questions (FAQ)

Q: Can I substitute 225CKH250M for 225CKS250M in my existing design?

A: Yes. The 225CKH250M maintains identical capacitance (2.2 µF), voltage rating (250 V), tolerance (±20%), package configuration (Radial, Can), and lead spacing (0.098" / 2.50mm). The substitute offers improved performance through reduced ESR and extended operating temperature range to 105°C. No circuit redesign is required.

Q: What is the physical difference between 225CKS250M and the Rubycon substitutes?

A: The Rubycon parts (250LEX2.2MEFC6.3X11 and 250LLE2.2MEFC6.3X11) have a maximum seated height of 0.512" (13.00mm) compared to 0.492" (12.50mm) for the original part. This 0.02" (0.50mm) height difference must be verified against PCB layout constraints and enclosure clearances before substitution.

Q: Why does ECA-2EM2R2 not specify ESR?

A: ESR specification is not provided in the component datasheet for ECA-2EM2R2. This does not indicate inferior performance. Panasonic components of this class typically exhibit ESR values within acceptable ranges for general-purpose applications. Detailed ESR specifications should be requested from the manufacturer if critical for circuit performance.

Q: Is UVR2E2R2MED suitable for new production?

A: No. UVR2E2R2MED carries Obsolete product status, indicating discontinued manufacturing. This part should be used only for maintenance of existing equipment. New designs must select from Active status alternatives: 225CKH250M, ECA-2EM2R2, 250LEX2.2MEFC6.3X11, 250LLE2.2MEFC6.3X11, or ECA-2EHG2R2.

Q: Which substitute offers the best reliability for high-temperature applications?

A: 250LLE2.2MEFC6.3X11 (Rubycon LLE series) provides the highest lifetime rating at 12000 hours at 105°C. This part is appropriate for applications requiring extended service life in elevated temperature environments. Operating temperature range extends to 105°C, providing thermal margin above the original specification.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliant status consistent with the original 225CKS250M. All parts are REACH Unaffected and classified under ECCN EAR99.

Q: Can I use 250LEX2.2MEFC6.3X11 in a space-constrained application?

A: The 250LEX2.2MEFC6.3X11 has a maximum seated height of 0.512" (13.00mm), which is 0.02" (0.50mm) taller than the original 225CKS250M at 0.492" (12.50mm). Verify that this height increase does not violate PCB layout constraints, component clearances, or enclosure dimensions before substitution.

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