SK2R2M200ST Equivalent & Substitute Parts Reference

Part Overview

The SK2R2M200ST is a 2.2 µF, 200 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is designed for general-purpose applications requiring polar capacitive energy storage. The part operates across a temperature range of -25°C to 85°C with a rated lifetime of 2000 hours at 85°C. Equivalent and substitute parts are identified based on matching capacitance, tolerance, voltage rating, physical dimensions, and mounting configuration to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value	Unit
Capacitance	2.2	µF
Tolerance	±20%	-
Voltage - Rated	200	V
ESR @ 120Hz	90.47	Ohm
Lifetime @ Temperature	2000 Hrs @ 85°C	-
Operating Temperature Range	-25°C ~ 85°C	-
Lead Spacing	0.098" (2.50mm)	-
Diameter	0.248" (6.30mm)	-
Height - Seated (Max)	0.512" (13.00mm)	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
RoHS Status	ROHS3 Compliant	-
Polarization	Polar	-

Substitute Part Grouping Explanation

Substitute parts for the SK2R2M200ST are grouped into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Same Voltage Rating - 200V): These parts maintain the 200 V voltage rating and 2.2 µF capacitance specification. They are mechanically and electrically interchangeable with the main part when physical dimensions and mounting configuration align.

Upgrade Substitutes (Higher Voltage Rating - 250V): These parts feature a 250 V voltage rating while maintaining 2.2 µF capacitance and ±20% tolerance. Higher voltage-rated capacitors are electrically compatible in 200 V applications and provide additional voltage margin. Physical dimensions remain consistent with the radial, can package format.

Substitution Criteria:

Capacitance: 2.2 µF (fixed)
Tolerance: ±20% (fixed)
Voltage Rating: 200 V (minimum) or 250 V (upgrade)
Lead Spacing: 0.098" (2.50mm)
Diameter: 0.248" (6.30mm)
Mounting Type: Through Hole
Package: Radial, Can
Polarization: Polar

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Diameter	Height (Max)	Product Status	RoHS
SK2R2M200ST	Cornell Dubilier	2.2 µF	200 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.512" (13.00mm)	Active	ROHS3
ECA-2EM2R2	Panasonic	2.2 µF	250 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.480" (12.20mm)	Active	ROHS3
UVR2D2R2MED	Nichicon	2.2 µF	200 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Obsolete	ROHS3
200LEX2.2MEFC6.3X11	Rubycon	2.2 µF	200 V	±20%	4000 Hrs @ 125°C	-40°C ~ 125°C	0.098" (2.50mm)	0.248" (6.30mm)	0.512" (13.00mm)	Active	ROHS3
225CKH250M	Cornell Dubilier / Illinois Capacitor	2.2 µF	250 V	±20%	2000 Hrs @ 105°C	-25°C ~ 105°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Active	ROHS3
250LEX2.2MEFC6.3X11	Rubycon	2.2 µF	250 V	±20%	4000 Hrs @ 125°C	-40°C ~ 125°C	0.098" (2.50mm)	0.248" (6.30mm)	0.512" (13.00mm)	Active	ROHS3
250LLE2.2MEFC6.3X11	Rubycon	2.2 µF	250 V	±20%	12000 Hrs @ 105°C	-40°C ~ 105°C	0.098" (2.50mm)	0.248" (6.30mm)	0.512" (13.00mm)	Active	ROHS3
UVR2E2R2MED	Nichicon	2.2 µF	250 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Obsolete	ROHS3

Engineering Selection Recommendations

Active Product Status Priority: Select substitute parts with Active product status for new designs and long-term availability. The following parts maintain Active status: ECA-2EM2R2 (Panasonic), 200LEX2.2MEFC6.3X11 (Rubycon), 225CKH250M (Cornell Dubilier / Illinois Capacitor), 250LEX2.2MEFC6.3X11 (Rubycon), and 250LLE2.2MEFC6.3X11 (Rubycon).

Compliance and Certification: All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the SK2R2M200ST. All parts carry EAR99 ECCN classification and 8532.22.0020 HTSUS code.

Direct Voltage-Matched Substitutes: For applications requiring exact 200 V voltage specification, the 200LEX2.2MEFC6.3X11 (Rubycon) provides Active status with enhanced thermal performance (4000 Hrs @ 125°C versus 2000 Hrs @ 85°C). The UVR2D2R2MED (Nichicon) is a direct 200 V equivalent but carries Obsolete product status.

Voltage-Upgraded Substitutes: For applications where higher voltage margin is acceptable, 250 V rated parts provide additional safety margin. The 250LLE2.2MEFC6.3X11 (Rubycon) offers the longest lifetime specification (12000 Hrs @ 105°C) among all substitutes. The ECA-2EM2R2 (Panasonic) and 225CKH250M (Cornell Dubilier / Illinois Capacitor) provide 250 V ratings with Active status and established supply availability.

Physical Dimension Compatibility: All substitute parts maintain the 0.098" (2.50mm) lead spacing and 0.248" (6.30mm) diameter. Height variations range from 0.480" to 0.512", which remain compatible with standard through-hole PCB layouts designed for radial can packages.

Frequently Asked Questions (FAQ)

Q: Can I use a 250 V rated capacitor in place of a 200 V rated capacitor?

A: Yes. A higher voltage-rated capacitor is electrically compatible in a lower voltage application. The 250 V rated substitutes (ECA-2EM2R2, 225CKH250M, 250LEX2.2MEFC6.3X11, 250LLE2.2MEFC6.3X11, UVR2E2R2MED) function correctly in circuits designed for 200 V operation and provide additional voltage margin.

Q: What is the difference between the Rubycon LEX and LLE series substitutes?

A: Both series maintain identical electrical specifications (2.2 µF, 250 V, ±20% tolerance) and physical dimensions. The primary difference is lifetime rating: 250LEX2.2MEFC6.3X11 provides 4000 Hrs @ 125°C, while 250LLE2.2MEFC6.3X11 provides 12000 Hrs @ 105°C. Selection depends on application temperature profile and required operational lifetime.

Q: Are Obsolete parts suitable for new designs?

A: Obsolete parts (UVR2D2R2MED and UVR2E2R2MED from Nichicon) are not recommended for new designs due to discontinued manufacturing status and potential supply constraints. Active status parts ensure long-term availability and design continuity.

Q: Do all substitute parts fit the same PCB footprint?

A: All substitute parts maintain the same lead spacing (0.098" / 2.50mm) and diameter (0.248" / 6.30mm), ensuring compatibility with existing through-hole PCB layouts. Height variations (0.480" to 0.512") are within standard radial can package tolerances and do not affect PCB mounting.

Q: What is the significance of ESR (Equivalent Series Resistance)?

A: ESR affects ripple current handling and heat dissipation. The SK2R2M200ST specifies 90.47 Ohm @ 120Hz. Substitute parts with unspecified ESR values maintain equivalent performance through design equivalence within the same capacitance, voltage, and tolerance class. ESR specifications are provided only when explicitly measured by the manufacturer.

Q: Which substitute offers the best thermal performance?

A: The 250LLE2.2MEFC6.3X11 (Rubycon) provides the highest lifetime rating at 12000 Hrs @ 105°C, followed by the 200LEX2.2MEFC6.3X11 and 250LEX2.2MEFC6.3X11 (both Rubycon) at 4000 Hrs @ 125°C. Selection depends on application temperature exposure and required operational duration.

Q: Is moisture sensitivity a concern for these capacitors?

A: The SK2R2M200ST carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Substitute parts either match this specification (200LEX2.2MEFC6.3X11, 225CKH250M, 250LEX2.2MEFC6.3X11, 250LLE2.2MEFC6.3X11) or carry "Not Applicable" designation (ECA-2EM2R2, UVR2D2R2MED, UVR2E2R2MED), both indicating unrestricted handling and storage.

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