Equivalent & Substitute Parts for SPCX221M02R

Part Overview

The SPCX221M02R is a 220 µF, 2 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is classified as obsolete, indicating that CDE has discontinued production. The part features a 15 mOhm equivalent series resistance (ESR) and supports a 1000-hour lifetime rating at 105°C, making it suitable for general-purpose applications requiring compact form factors and low ESR characteristics.

Due to its obsolete status, sourcing replacement units from the original manufacturer is no longer viable. Equivalent and substitute parts from active manufacturers provide functional alternatives that maintain electrical and mechanical compatibility with the original design while offering improved availability and, in many cases, enhanced performance characteristics.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	220 µF	Must match exactly for circuit functionality
Voltage Rating	2 V	Minimum acceptable; higher ratings are acceptable
Tolerance	±20%	Must match or be tighter for circuit performance
Package / Case	2917 (7343 Metric)	Must match for PCB footprint compatibility
Mounting Type	Surface Mount	Must match for assembly process compatibility
ESR (Equivalent Series Resistance)	15 mOhm	Lower values provide performance improvement; higher values may affect ripple current handling
Operating Temperature Range	-40°C ~ 105°C	Substitute must cover or exceed this range
Lifetime @ Temperature	1000 Hrs @ 105°C	Higher values indicate improved reliability
Type	Polymer	Must remain aluminum polymer for electrical characteristics
RoHS Status	ROHS3 Compliant	Required for regulatory compliance

Substitute Part Grouping Explanation

Substitution logic for the SPCX221M02R is based on strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Mandatory Matching Parameters:

Capacitance: 220 µF (exact match required)
Package / Case: 2917 (7343 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Type: Aluminum Polymer (exact match required)
Tolerance: ±20% (exact match or tighter acceptable)
Voltage Rating: 2 V minimum (equal or higher acceptable)
RoHS3 Compliance (required for regulatory alignment)

Performance Enhancement Parameters:

ESR: 15 mOhm baseline; lower values (9 mOhm) represent performance improvement
Lifetime @ 105°C: 1000 Hrs baseline; 2000 Hrs represents enhanced reliability
Operating Temperature Range: -40°C ~ 105°C baseline; -55°C ~ 105°C represents extended range
Ripple Current Capability: Higher values indicate improved high-frequency performance

Substitute parts are categorized as follows:

Direct Substitutes (Electrical & Mechanical Equivalence): Parts matching all mandatory parameters with identical or superior performance characteristics.

Upgrade Substitutes (Enhanced Voltage Rating): Parts with identical electrical specifications except for higher voltage ratings, suitable for designs requiring additional voltage margin.

Similar Substitutes (Performance Variations): Parts matching mandatory parameters with variations in ESR, lifetime, or ripple current that may affect specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR	Lifetime @ 105°C	Operating Temp Range	Ripple Current @ 100 kHz	Package	Status
SPCX221M02R	Cornell Dubilier Electronics	220 µF	2 V	±20%	15 mOhm	1000 Hrs	-40°C ~ 105°C	2.7 A	2917 (7343)	Obsolete
EEF-CX0D221R	Panasonic Electronic Components	220 µF	2 V	±20%	15 mOhm	2000 Hrs	-55°C ~ 105°C	5.1 A	2917 (7343)	Active
EEF-CX0E221R	Panasonic Electronic Components	220 µF	2.5 V	±20%	15 mOhm	2000 Hrs	-55°C ~ 105°C	5.1 A	2917 (7343)	Active
EEF-CX0G221R	Panasonic Electronic Components	220 µF	4 V	±20%	15 mOhm	2000 Hrs	-55°C ~ 105°C	5.1 A	2917 (7343)	Active
ECASD40D227M009K00	Murata Electronics	220 µF	2 V	±20%	9 mOhm	1000 Hrs	-40°C ~ 105°C	3 A	2917 (7343)	Active
EEF-SX0D221ER	Panasonic Electronic Components	220 µF	2 V	±20%	9 mOhm	2000 Hrs	-55°C ~ 105°C	6.3 A	2917 (7343)	Active
EEF-SX0D221R	Panasonic Electronic Components	220 µF	2 V	±20%	9 mOhm	2000 Hrs	-55°C ~ 105°C	Not Specified	2917 (7343)	Not For New Designs
EEF-UD0D221R	Panasonic Electronic Components	220 µF	2 V	±20%	15 mOhm	1000 Hrs	-40°C ~ 105°C	Not Specified	2917 (7343)	Obsolete

Engineering Selection Recommendations

Primary Recommendation: EEF-CX0D221R

The EEF-CX0D221R from Panasonic Electronic Components is the optimal direct substitute for the SPCX221M02R. This part maintains identical electrical specifications (220 µF, 2 V, ±20% tolerance, 15 mOhm ESR) while offering significant improvements in reliability and performance. The extended lifetime rating of 2000 hours at 105°C (compared to 1000 hours for the original) provides enhanced long-term stability. The expanded operating temperature range (-55°C ~ 105°C) accommodates broader environmental conditions. Improved ripple current capability (5.1 A at 100 kHz versus 2.7 A) supports higher-frequency applications. The part is in active production status with substantial inventory availability (11,295 units), ensuring supply chain continuity. RoHS3 compliance and REACH unaffected status maintain regulatory alignment.

Secondary Recommendation: EEF-CX0E221R

The EEF-CX0E221R provides an upgrade path for designs requiring additional voltage margin. This part maintains the same physical package, capacitance, tolerance, and ESR as the original while offering a 2.5 V rating. The enhanced lifetime (2000 hours) and extended temperature range (-55°C ~ 105°C) provide reliability improvements. This option is suitable for applications where circuit voltage levels may fluctuate or where design margin enhancement is beneficial. Active production status and adequate inventory (731 units) support implementation.

Tertiary Recommendation: EEF-CX0G221R

The EEF-CX0G221R represents the highest voltage upgrade option at 4 V rating, maintaining all other electrical and mechanical specifications. This part is recommended for designs requiring maximum voltage headroom or for applications with potential voltage transients. Active production status and high inventory availability (13,407 units) facilitate rapid deployment.

Alternative Consideration: EEF-SX0D221ER

The EEF-SX0D221ER offers improved ESR performance (9 mOhm versus 15 mOhm) and enhanced ripple current capability (6.3 A at 100 kHz). This part is suitable for applications with stringent ripple current requirements or where lower ESR directly improves circuit performance. Extended lifetime (2000 hours) and temperature range (-55°C ~ 105°C) provide reliability benefits. Active production status supports implementation. Note: Height dimension is 0.079" (2.00mm) compared to 0.075" (1.90mm) for the original; verify PCB clearance before selection.

Not Recommended for New Designs: EEF-SX0D221R

Although this part offers similar performance characteristics to EEF-SX0D221ER, its "Not For New Designs" status indicates manufacturer phase-out. EEF-SX0D221ER should be selected instead.

Obsolete Status: EEF-UD0D221R

This Panasonic part shares obsolete status with the original SPCX221M02R and should not be selected for new implementations despite available inventory.

Frequently Asked Questions (FAQ)

Q1: Can I use a substitute part with a higher voltage rating than the original 2 V specification?

A: Yes. Higher voltage ratings are acceptable substitutes provided all other electrical and mechanical parameters match. A 2.5 V or 4 V rated capacitor will function correctly in a circuit designed for 2 V operation. The higher voltage rating provides additional safety margin and does not negatively affect circuit performance. Verify that the physical dimensions remain compatible with your PCB layout.

Q2: What is the significance of ESR (Equivalent Series Resistance) in capacitor substitution?

A: ESR directly affects ripple current handling capability and heat generation. Lower ESR values (9 mOhm) represent performance improvement over higher values (15 mOhm). If your application involves high-frequency switching or significant ripple current, selecting a substitute with lower ESR (such as EEF-SX0D221ER at 9 mOhm) will improve performance. However, if ripple current requirements are modest, the original 15 mOhm specification remains adequate.

Q3: Why do some substitute parts have different height dimensions?

A: The EEF-SX series parts (EEF-SX0D221ER and EEF-SX0D221R) have a maximum seated height of 0.079" (2.00mm) compared to 0.075" (1.90mm) for the original SPCX221M02R and other substitutes. This 0.004" difference may affect PCB clearance in space-constrained designs. Verify your PCB layout accommodates this dimension before selecting SX-series parts. If clearance is limited, select CX-series or UD-series alternatives.

Q4: What does "Not For New Designs" status mean?

A: This designation indicates that the manufacturer is phasing out the part and recommends against its use in new product development. While existing inventory may be available, the manufacturer provides no guarantee of future availability or support. For new designs, select parts with "Active" status to ensure long-term supply chain stability.

Q5: How do I verify that a substitute part is compatible with my existing PCB design?

A: Confirm the following parameters match your original design: (1) Capacitance value (220 µF), (2) Package / Case designation (2917 or 7343 Metric), (3) Mounting type (Surface Mount), (4) Physical dimensions (length, width, and height), and (5) Land pattern size. All recommended substitutes maintain identical package and land pattern specifications with the exception of height variations noted for SX-series parts.

Q6: Are all recommended substitutes RoHS3 compliant?

A: Yes. All active substitute parts listed (EEF-CX0D221R, EEF-CX0E221R, EEF-CX0G221R, ECASD40D227M009K00, and EEF-SX0D221ER) maintain RoHS3 compliance, ensuring regulatory alignment with current environmental standards. The original SPCX221M02R also carries RoHS3 compliance.

Q7: What is the difference between "Direct Substitute," "Upgrade Substitute," and "Similar Substitute" categories?

A: Direct substitutes (EEF-CX0D221R) match all electrical and mechanical specifications of the original part while offering performance improvements. Upgrade substitutes (EEF-CX0E221R, EEF-CX0G221R) maintain identical specifications except for higher voltage ratings, providing additional design margin. Similar substitutes (ECASD40D227M009K00, EEF-SX0D221ER, EEF-SX0D221R) match mandatory parameters but vary in secondary characteristics such as ESR or lifetime, requiring application-specific evaluation.

Q8: Which substitute offers the best overall performance improvement?

A: EEF-SX0D221ER provides the most comprehensive performance enhancement, combining lower ESR (9 mOhm), extended lifetime (2000 hours), expanded temperature range (-55°C ~ 105°C), and superior ripple current capability (6.3 A at 100 kHz). However, verify that the 0.079" height dimension accommodates your PCB clearance requirements before selection.

Q9: Can I mix different substitute parts within the same circuit board?

A: Yes, provided each location meets the specific electrical requirements of that circuit node. However, for manufacturing consistency and supply chain simplification, using a single substitute part number across all identical capacitor positions is recommended.

Q10: What inventory considerations should I evaluate when selecting a substitute?

A: EEF-CX0D221R offers the highest inventory availability (11,295 units), ensuring immediate supply and long-term sourcing stability. EEF-CX0G221R also provides substantial inventory (13,407 units). If rapid prototyping or production ramp is critical, prioritize parts with higher stock levels. Verify current inventory status with your component distributor before finalizing procurement decisions.

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