Equivalent & Substitute Parts for 229CKS6R3M

Part Overview

The 229CKS6R3M is a 22000 µF, 6.3 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the CKS series. This radial, through-hole component is designed for general-purpose applications with a rated lifetime of 2000 hours at 85°C and an operating temperature range of -40°C to 85°C. The part is currently active in production and ROHS3 compliant.

Substitute parts are identified when equivalent capacitance, voltage rating, physical dimensions, and mounting characteristics align with the original specification, allowing direct replacement in circuit applications while maintaining functional performance.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	22000	µF	Critical - must match exactly
Voltage - Rated	6.3	V	Critical - minimum acceptable rating
Tolerance	±20%	%	Critical - must match or be tighter
Lead Spacing	7.50	mm	Critical - PCB hole pattern compatibility
Size / Dimension	18.00	mm Dia	Critical - physical fit in enclosure
Height - Seated (Max)	41.50	mm	Critical - vertical clearance
Mounting Type	Through Hole	-	Critical - assembly method
Package / Case	Radial, Can	-	Critical - form factor
Operating Temperature	-40°C ~ 85°C	°C	Important - thermal environment compatibility
Lifetime @ Temp.	2000 Hrs @ 85°C	Hrs	Important - service life requirement
Polarization	Polar	-	Critical - polarity-sensitive application
RoHS Status	ROHS3 Compliant	-	Important - regulatory compliance

Substitute Part Grouping Explanation

Substitute parts for the 229CKS6R3M are identified based on strict alignment of electrical and mechanical parameters. The substitution logic is as follows:

Primary Substitution Criteria:

Capacitance value must equal 22000 µF
Voltage rating must be 6.3 V or higher
Tolerance must be ±20% or tighter
Lead spacing must be 0.295" (7.50 mm)
Diameter must be 0.709" (18.00 mm)
Height must not exceed 1.654" (42.00 mm)
Mounting type must be through-hole radial can
Polarization must be polar

Identified Substitutes:

UKA0J223MHD (Nichicon UKA series) - Meets all primary criteria with identical capacitance, voltage, tolerance, lead spacing, and physical dimensions. Operating temperature range extends to -55°C ~ 105°C with lifetime rated at 2000 Hrs @ 105°C. Product status is Not For New Designs.
UVK1A223MHD (Nichicon UVK series) - Meets all primary criteria with identical capacitance, tolerance, lead spacing, and physical dimensions. Voltage rating is 10 V (exceeds 6.3 V requirement). Operating temperature range is -40°C ~ 85°C with lifetime rated at 2000 Hrs @ 85°C. Height is 1.654" (42.00 mm), within acceptable tolerance. Product status is Not For New Designs.

Parameter Comparison

Parameter	229CKS6R3M (Main)	UKA0J223MHD	UVK1A223MHD	Unit
Manufacturer	Cornell Dubilier / Illinois Capacitor	Nichicon	Nichicon	-
Series	CKS	UKA	UVK	-
Capacitance	22000	22000	22000	µF
Tolerance	±20%	±20%	±20%	%
Voltage - Rated	6.3	6.3	10	V
ESR @ 120Hz	49.7	-	-	mOhm
Lifetime @ Temp.	2000 Hrs @ 85°C	2000 Hrs @ 105°C	2000 Hrs @ 85°C	Hrs
Operating Temperature	-40°C ~ 85°C	-55°C ~ 105°C	-40°C ~ 85°C	°C
Ripple Current @ 120 Hz	3.4	2.35	3.4	A
Lead Spacing	7.50	7.50	7.50	mm
Size / Dimension	18.00	18.00	18.00	mm Dia
Height - Seated (Max)	41.50	41.50	42.00	mm
Mounting Type	Through Hole	Through Hole	Through Hole	-
Package / Case	Radial, Can	Radial, Can	Radial, Can	-
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	-
Product Status	Active	Not For New Designs	Not For New Designs	-

Engineering Selection Recommendations

229CKS6R3M (Primary Selection)

The 229CKS6R3M remains the preferred choice for new designs. This part is currently active in production with 906 units in stock. It is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The specified ESR of 49.7 mOhm @ 120Hz and ripple current ratings of 3.4 A @ 120 Hz and 4.76 A @ 100 kHz are documented for this part number.

UVK1A223MHD (Preferred Substitute)

The UVK1A223MHD is the recommended substitute when 229CKS6R3M is unavailable. This Nichicon UVK series part maintains identical capacitance, tolerance, lead spacing, and physical diameter. The 10 V voltage rating exceeds the 6.3 V requirement, providing additional voltage margin. Operating temperature range (-40°C ~ 85°C) and lifetime rating (2000 Hrs @ 85°C) match the original specification. Height of 42.00 mm is within acceptable tolerance of the 41.50 mm maximum. ROHS3 compliance is confirmed. Although marked as Not For New Designs, this part is suitable for replacement applications with 1250 units in stock.

UKA0J223MHD (Alternative Substitute)

The UKA0J223MHD is an alternative substitute when UVK1A223MHD is unavailable. This Nichicon UKA series part provides identical electrical specifications: 22000 µF capacitance, ±20% tolerance, and 6.3 V voltage rating. Physical dimensions match exactly: 18.00 mm diameter, 7.50 mm lead spacing, and 41.50 mm height. The extended operating temperature range (-55°C ~ 105°C) and higher temperature lifetime rating (2000 Hrs @ 105°C) provide enhanced thermal performance. ROHS3 compliance is confirmed. Although marked as Not For New Designs, this part is suitable for replacement applications with 698 units in stock.

Frequently Asked Questions (FAQ)

Q: Can UVK1A223MHD be used as a direct replacement for 229CKS6R3M?

A: Yes. The UVK1A223MHD meets all critical substitution parameters: identical 22000 µF capacitance, ±20% tolerance, 7.50 mm lead spacing, 18.00 mm diameter, and through-hole radial can mounting. The 10 V voltage rating exceeds the 6.3 V requirement. Height of 42.00 mm is within acceptable tolerance. Both parts are ROHS3 compliant and operate within -40°C ~ 85°C with 2000 Hrs @ 85°C lifetime rating.

Q: What is the difference between UKA0J223MHD and UVK1A223MHD?

A: Both parts share identical capacitance (22000 µF), tolerance (±20%), and physical dimensions (18.00 mm diameter, 7.50 mm lead spacing, 41.50 mm height). The primary differences are: UKA0J223MHD has 6.3 V rating with extended temperature range (-55°C ~ 105°C) and 2000 Hrs @ 105°C lifetime; UVK1A223MHD has 10 V rating with standard temperature range (-40°C ~ 85°C) and 2000 Hrs @ 85°C lifetime. Selection depends on thermal environment and voltage margin requirements.

Q: Are the physical dimensions identical between all three parts?

A: Diameter and lead spacing are identical: 18.00 mm and 7.50 mm respectively. Height differs slightly: 229CKS6R3M and UKA0J223MHD are 41.50 mm maximum; UVK1A223MHD is 42.00 mm maximum. This 0.50 mm difference is within typical PCB clearance tolerances for through-hole radial can capacitors.

Q: Why are UKA0J223MHD and UVK1A223MHD marked as "Not For New Designs"?

A: Product status reflects manufacturer lifecycle decisions and does not indicate functional deficiency. Both parts remain suitable for replacement and repair applications. The designation indicates these parts are not recommended for new product development, but existing inventory is available for field service and legacy system support.

Q: What compliance certifications apply to all substitute parts?

A: All three parts (229CKS6R3M, UKA0J223MHD, and UVK1A223MHD) are ROHS3 compliant and REACH unaffected. ECCN classification is EAR99 for all parts. HTSUS code is 8532.22.0020 for all parts.

Q: Can UVK1A223MHD be used in applications requiring exactly 6.3 V rating?

A: Yes. The UVK1A223MHD 10 V rating is compatible with 6.3 V applications. A higher voltage rating provides additional safety margin and does not degrade performance in lower voltage circuits. The capacitor will operate safely at 6.3 V or any voltage below its 10 V rating.

Q: What is the ripple current difference between the main part and substitutes?

A: 229CKS6R3M specifies 3.4 A @ 120 Hz and 4.76 A @ 100 kHz. UVK1A223MHD specifies 3.4 A @ 120 Hz and 3.91 A @ 10 kHz. UKA0J223MHD specifies 2.35 A @ 120 Hz and 2.7025 A @ 10 kHz. Application-specific ripple current requirements must be evaluated against these ratings.

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