SPCX221M0ER Equivalent & Substitute Parts Reference

Part Overview

The SPCX221M0ER is a 220 µF, 2.5 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is classified as obsolete product status. Due to its discontinued availability, equivalent and substitute parts from active manufacturers are necessary for ongoing production support, design revisions, and inventory replenishment. Substitute parts must maintain electrical compatibility within the specified capacitance, voltage rating, and physical package constraints while meeting RoHS3 and REACH compliance requirements.

Key Parameters

Parameter	Value	Unit	Criticality for Substitution
Capacitance	220	µF	Critical - Must Match
Voltage Rating	2.5	V	Critical - Must Match or Exceed
Tolerance	±20%	%	Critical - Must Match
Package / Case	2917 (7343 Metric)	-	Critical - Must Match
Mounting Type	Surface Mount	-	Critical - Must Match
ESR (Equivalent Series Resistance)	15	mOhm	Important - Lower or Equal
Operating Temperature Range	-40 to 105	°C	Important - Must Encompass or Exceed
Lifetime @ 105°C	1000	Hrs	Important - Higher Preferred
RoHS Status	ROHS3 Compliant	-	Critical - Must Match

Substitute Part Grouping Explanation

Substitute parts for the SPCX221M0ER are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Electrical & Mechanical Equivalence): Parts that maintain identical or superior performance across all critical parameters: 220 µF capacitance, 2.5 V voltage rating, ±20% tolerance, 2917 (7343 Metric) package, surface mount configuration, and ROHS3 compliance. These parts are interchangeable at the circuit board level without design modification.

Compatible Alternatives (Voltage Upgrade Path): Parts that exceed the voltage rating specification (4 V instead of 2.5 V) while maintaining all other critical parameters. These provide enhanced voltage margin and are mechanically and electrically compatible, though they represent a design upgrade rather than a direct replacement.

Key Parameters Determining Substitution Eligibility:

Capacitance: 220 µF (exact match required)
Voltage Rating: 2.5 V minimum (higher ratings acceptable)
Tolerance: ±20% (exact match required)
Package: 2917 (7343 Metric) (exact match required)
Mounting: Surface Mount (exact match required)
Compliance: ROHS3 Compliant (exact match required)

Parameter Comparison

Parameter	SPCX221M0ER (Main)	EEF-CX0E221R	EEF-CX0G221R	EEF-SX0E221E7	EEF-SX0E221ER	EEF-SX0E221R
Manufacturer	Cornell Dubilier Electronics	Panasonic	Panasonic	Panasonic	Panasonic	Panasonic
Capacitance	220 µF	220 µF	220 µF	220 µF	220 µF	220 µF
Voltage Rating	2.5 V	2.5 V	4 V	2.5 V	2.5 V	2.5 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
ESR @ 100 kHz	15 mOhm	15 mOhm	15 mOhm	7 mOhm	9 mOhm	9 mOhm
Lifetime @ 105°C	1000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40 to 105°C	-55 to 105°C	-55 to 105°C	-55 to 105°C	-55 to 105°C	-55 to 105°C
Ripple Current @ 100 kHz	2.7 A	5.1 A	5.1 A	7 A	6.3 A	Not Specified
Package / Case	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Recommendation - Direct Substitutes:

EEF-CX0E221R (Panasonic SP-Cap CX series) is the preferred direct substitute for the SPCX221M0ER. This part maintains identical electrical specifications (220 µF, 2.5 V, ±20%, 15 mOhm ESR) and mechanical compatibility (2917 package, surface mount). The EEF-CX0E221R carries Active product status with ROHS3 compliance and REACH unaffected designation. The component offers doubled lifetime rating (2000 Hrs @ 105°C versus 1000 Hrs) and extended operating temperature range (-55 to 105°C), providing enhanced reliability margins. Inventory availability is confirmed at 731 pieces.

Secondary Recommendation - Enhanced Performance Alternative:

EEF-SX0E221E7 (Panasonic SP-Cap SX series) provides superior electrical performance characteristics while maintaining full mechanical and voltage compatibility. This part delivers reduced ESR (7 mOhm versus 15 mOhm), increased ripple current capability (7 A @ 100 kHz versus 2.7 A), and extended lifetime (2000 Hrs @ 105°C). The EEF-SX0E221E7 is Active status with ROHS3 compliance. Physical dimensions are compatible with the 2917 package footprint, though seated height increases marginally from 1.90 mm to 2.00 mm. This substitution is suitable for applications requiring improved thermal performance or higher ripple current handling. Inventory availability is confirmed at 6497 pieces.

Tertiary Recommendation - Voltage Upgrade Path:

EEF-CX0G221R (Panasonic SP-Cap CX series) represents a voltage-rated upgrade option, providing 4 V rating instead of 2.5 V while maintaining all other critical parameters. This part is mechanically and electrically compatible with identical ESR (15 mOhm) and package dimensions. The 4 V rating provides additional voltage margin for applications subject to transient overvoltage conditions. Active product status with ROHS3 compliance is confirmed. Inventory availability is high at 13,407 pieces.

Not Recommended for New Designs:

EEF-SX0E221R carries "Not For New Designs" product status and should not be selected for new circuit designs, though it remains available for legacy system support and repair applications.

Frequently Asked Questions (FAQ)

Q: Can EEF-CX0G221R (4 V rating) be used in place of SPCX221M0ER (2.5 V rating)?

A: Yes. The EEF-CX0G221R is electrically and mechanically compatible. Higher voltage-rated capacitors are acceptable substitutes in circuits designed for lower voltage ratings, as they provide additional voltage margin. The 4 V rating does not affect circuit operation at 2.5 V or below. All other electrical parameters (capacitance, tolerance, ESR, package) are identical.

Q: What is the difference between EEF-CX0E221R and EEF-SX0E221E7?

A: Both parts are direct substitutes with identical capacitance, voltage, tolerance, and package specifications. The primary differences are ESR (15 mOhm versus 7 mOhm) and ripple current capability (5.1 A versus 7 A @ 100 kHz). The EEF-SX0E221E7 offers superior high-frequency performance characteristics. Selection depends on application ripple current requirements. The EEF-SX0E221E7 seated height is 2.00 mm versus 1.90 mm for EEF-CX0E221R.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All recommended substitute parts (EEF-CX0E221R, EEF-CX0G221R, EEF-SX0E221E7, EEF-SX0E221ER) are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: Does the 0.01 inch (0.10 mm) increase in seated height for EEF-SX0E221E7 affect PCB assembly?

A: The seated height increase from 1.90 mm to 2.00 mm is within standard PCB assembly tolerances and does not require design modification. This dimension change does not affect electrical performance or mechanical fit within the 2917 package footprint.

Q: What is the significance of "Not For New Designs" status on EEF-SX0E221R?

A: This designation indicates the part is in mature/declining phase and Panasonic does not recommend its use in new circuit designs. However, the part remains available for legacy system support, repair, and maintenance applications. For new designs, select EEF-CX0E221R or EEF-SX0E221E7 instead.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts carry ROHS3 Compliant designation and REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: Which substitute offers the best thermal performance?

A: EEF-SX0E221E7 provides the lowest ESR (7 mOhm) and highest ripple current rating (7 A @ 100 kHz), resulting in reduced heat generation under high-frequency ripple current conditions. This part is optimal for thermally demanding applications.

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