Equivalent & Substitute Parts for UVK2W2R2MPD

Part Overview

The Nichicon UVK2W2R2MPD is a 2.2 µF, 450 V aluminum electrolytic capacitor in radial, can package configuration. This component is classified as "Not For New Designs," indicating it has been superseded in Nichicon's product line. Finding equivalent and substitute parts is necessary for maintenance applications, legacy system repairs, and design transitions to active product alternatives that meet the same electrical and mechanical requirements.

Key Parameters

Parameter	Value
Capacitance	2.2 µF
Voltage Rating	450 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Height	0.512" (13.00 mm)
Operating Temperature Range	-25°C to 85°C
Lifetime Rating	2000 Hrs @ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UVK2W2R2MPD is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 2.2 µF (exact)
Voltage Rating: 450 V (exact)
Tolerance: ±20% (exact)
Polarization: Polar (exact)
Package Type: Radial, Can (exact)
Mounting Type: Through Hole (exact)
Lead Spacing: 0.138" (4.60 mm) (exact)
Case Diameter: 0.315" (8.00 mm) (exact)
RoHS Compliance: ROHS3 Compliant (required)

Allowable Variations:

Height: Within PCB layout constraints (up to 0.551" / 14.00 mm acceptable for most applications)
Operating Temperature Range: May extend beyond -25°C to 85°C (e.g., -25°C to 105°C is acceptable)
Lifetime Rating: May exceed 2000 Hrs @ 85°C (e.g., 5000 Hrs @ 105°C is acceptable)
Ripple Current: May exceed specified values
ESR: Variations acceptable if not specified in original design

Substitutes are grouped into three categories: Direct Equivalents (identical footprint and thermal rating), Compatible Alternatives (identical electrical and mechanical specs with extended thermal performance), and Upgraded Options (enhanced lifetime and temperature ratings).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Case Dia	Height	Lifetime @ Temp	Operating Temp	Product Status
UVK2W2R2MPD	Nichicon	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Not For New Designs
UVR2W2R2MPD	Nichicon	2.2 µF	450 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Not For New Designs
225CKE450MJM	Cornell Dubilier / Illinois Capacitor	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	2000 Hrs @ 105°C	-25°C ~ 105°C	Active
225CKS450MJM	Cornell Dubilier / Illinois Capacitor	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.492" (12.50 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Active
225TXK450MFH	Cornell Dubilier / Illinois Capacitor	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	5000 Hrs @ 105°C	-25°C ~ 105°C	Active
450PK2.2MEFC8X11.5	Rubycon	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.531" (14.60 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Active
450PK2R2MEFC8X11.5	Rubycon	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.531" (14.60 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Active
450BXC2.2MEFC8X11.5	Rubycon	2.2 µF	450 V	±20%	0.138" (4.60 mm)	0.315" (8.00 mm)	0.531" (14.60 mm)	8000 Hrs @ 105°C	-25°C ~ 105°C	Active
ECA-2WM2R2	Panasonic Electronic Components	2.2 µF	450 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.531" (14.60 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Active
ECA-2WM2R2B	Panasonic Electronic Components	2.2 µF	450 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.531" (14.60 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Active
ESMG451ELL2R2MJC5S	Chemi-Con	2.2 µF	450 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	2000 Hrs @ 85°C	-25°C ~ 85°C	Active

Engineering Selection Recommendations

Direct Footprint Equivalents (Identical 0.138" Lead Spacing, 8.00 mm Diameter):

The 225CKS450MJM (Cornell Dubilier) and 450PK2.2MEFC8X11.5 / 450PK2R2MEFC8X11.5 (Rubycon) are direct mechanical and electrical equivalents to the UVK2W2R2MPD. All three maintain the same lead spacing, case diameter, and electrical specifications. The 225CKS450MJM offers a slightly reduced height (0.492" vs. 0.512"), providing additional PCB clearance. All three are ROHS3 compliant and Active products, making them suitable for new designs and production applications.

Enhanced Thermal Performance Options (Identical Footprint, Extended Temperature Range):

The 225CKE450MJM and 225TXK450MFH (Cornell Dubilier) maintain identical mechanical footprints to the original part while extending the operating temperature range to -25°C to 105°C. The 225TXK450MFH provides the highest lifetime rating at 5000 Hrs @ 105°C, compared to the original 2000 Hrs @ 85°C. These options are recommended for applications requiring enhanced thermal stability or extended service life.

The 450BXC2.2MEFC8X11.5 (Rubycon) similarly maintains the original footprint with 8000 Hrs @ 105°C lifetime rating, offering the longest operational life among all substitutes.

Larger Footprint Alternatives (0.197" Lead Spacing, 10.00 mm Diameter):

The UVR2W2R2MPD (Nichicon), ECA-2WM2R2 / ECA-2WM2R2B (Panasonic), and ESMG451ELL2R2MJC5S (Chemi-Con) feature increased lead spacing and case diameter. These parts are suitable only if PCB layout permits the larger footprint. All maintain identical electrical specifications and ROHS3 compliance. The ECA-2WM2R2B is supplied in Cut Tape packaging, while others are in Bulk.

Product Status Consideration:

All recommended substitutes carry Active product status, ensuring long-term availability and manufacturing support. The original UVK2W2R2MPD is classified as "Not For New Designs," making transition to an active alternative necessary for new production programs.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different lead spacing on my existing PCB?

A: No. Lead spacing is a critical mechanical parameter. The original UVK2W2R2MPD uses 0.138" (4.60 mm) spacing. Substitutes with 0.197" (5.00 mm) spacing require PCB redesign and cannot be used as direct drop-in replacements. Verify your PCB layout before selecting a substitute.

Q: What is the difference between the Rubycon 450PK2.2MEFC8X11.5 and 450PK2R2MEFC8X11.5?

A: Both parts are electrically and mechanically identical. They share the same capacitance (2.2 µF), voltage rating (450 V), footprint, and lifetime specifications (2000 Hrs @ 85°C). The part number variation reflects internal Rubycon designation changes. Either part is functionally equivalent for the UVK2W2R2MPD application.

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

A: The 450BXC2.2MEFC8X11.5 (Rubycon) provides the highest lifetime rating at 8000 Hrs @ 105°C, followed by the 225TXK450MFH (Cornell Dubilier) at 5000 Hrs @ 105°C. Both maintain the original footprint and are suitable for applications requiring extended operational life or elevated ambient temperatures.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original UVK2W2R2MPD. This ensures compatibility with RoHS-regulated supply chains and end-use applications.

Q: Can I use the larger footprint parts (10.00 mm diameter) as substitutes?

A: Only if your PCB layout accommodates the increased lead spacing (0.197" vs. 0.138") and case diameter (0.394" vs. 0.315"). These parts are not mechanical drop-in replacements. Verify clearance to adjacent components and trace routing before selection.

Q: What is the difference between the Cornell Dubilier CKE and CKS series?

A: The 225CKE450MJM operates at -25°C to 105°C with 2000 Hrs @ 105°C lifetime, while the 225CKS450MJM operates at -25°C to 85°C with 2000 Hrs @ 85°C lifetime. The CKE series is suitable for higher-temperature applications. Both maintain identical electrical and mechanical specifications otherwise.

Q: Is the Panasonic ECA-2WM2R2B (Cut Tape packaging) equivalent to the Bulk-packaged version?

A: Yes. The ECA-2WM2R2B and ECA-2WM2R2 are electrically and mechanically identical. The difference is packaging format only: Cut Tape (CT) versus Bulk. Select based on your procurement and assembly requirements. Both are Active products with identical specifications.

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