SPSX221M0ER Equivalent & Substitute Parts Reference

Part Overview

The SPSX221M0ER 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, which necessitates identification of equivalent and substitute parts for ongoing production and maintenance applications. The part delivers 9 mOhm equivalent series resistance with a 1000-hour lifetime rating at 105°C, suitable for general-purpose decoupling and energy storage functions in low-voltage circuits.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	220	µF	Critical - must match exactly
Voltage Rating	2.5	V	Critical - minimum requirement
ESR (Equivalent Series Resistance)	9	mOhm	Critical - affects ripple current handling
Package / Case	2917 (7343 Metric)	-	Critical - PCB footprint compatibility
Mounting Type	Surface Mount	-	Critical - assembly process compatibility
Operating Temperature Range	-40°C to 105°C	-	Important - thermal environment compatibility
Lifetime @ Temperature	1000	Hrs @ 105°C	Important - reliability specification
Ripple Current @ 100 kHz	3	A	Important - thermal stress handling
Type	Polymer	-	Critical - electrochemical characteristics
Tolerance	±20%	-	Important - capacitance accuracy

Substitute Part Grouping Explanation

Substitution validity is determined by strict adherence to the following parameters:

Critical Parameters (Must Match or Exceed):

Capacitance: 220 µF (exact match required)
Voltage Rating: 2.5 V minimum (higher ratings acceptable as upgrades)
Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
Mounting Type: Surface Mount (exact match required)
Type: Polymer (exact match required for electrochemical compatibility)

Important Parameters (Must Match or Improve):

ESR: 9 mOhm or lower (lower values improve performance)
Operating Temperature Range: Must encompass -40°C to 105°C minimum
Lifetime @ 105°C: 1000 hours minimum (higher values improve reliability)
Ripple Current @ 100 kHz: 3 A minimum (higher values improve thermal margin)

Acceptable Variations:

Tolerance: ±20% (standard for polymer capacitors)
Packaging format: Tape & Reel acceptable for surface mount assembly
Manufacturer: Different manufacturers acceptable if parameters met

The substitute parts are grouped as follows:

Direct Equivalents (2.5 V rated, 220 µF, 9 mOhm ESR):

EEF-SX0E221ER (Panasonic, Active status, improved lifetime)
EEF-SX0E221R (Panasonic, Not For New Designs status)
EEF-SX0E221E7 (Panasonic, Active status, lower ESR at 7 mOhm)

Upgrade Substitute (4 V rated, 220 µF, 9 mOhm ESR):

EEF-SX0G221ER (Panasonic, higher voltage rating for enhanced margin)

Similar Substitute (2.5 V rated, 220 µF, higher ESR):

EEF-CX0E221R (Panasonic, 15 mOhm ESR, different series)

Parametric Equivalent (Same manufacturer family):

227XMPL2R5MG19X (Cornell Dubilier / Illinois Capacitor, identical electrical specifications)

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	ESR (mOhm)	Lifetime @ 105°C (Hrs)	Operating Temp (°C)	Ripple Current @ 100 kHz (A)	Height Max (mm)	Product Status
SPSX221M0ER	Cornell Dubilier	220	2.5	9	1000	-40 to 105	3.0	2.10	Obsolete
EEF-SX0E221ER	Panasonic	220	2.5	9	2000	-55 to 105	6.3	2.00	Active
EEF-SX0E221R	Panasonic	220	2.5	9	2000	-55 to 105	Not specified	2.00	Not For New Designs
EEF-SX0G221ER	Panasonic	220	4.0	9	2000	-55 to 105	6.3	2.00	Active
EEF-CX0E221R	Panasonic	220	2.5	15	2000	-55 to 105	5.1	1.90	Active
EEF-SX0E221E7	Panasonic	220	2.5	7	2000	-55 to 105	7.0	2.00	Active
227XMPL2R5MG19X	Cornell Dubilier / Illinois Capacitor	220	2.5	9	1000	-40 to 105	3.0	2.10	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

Select EEF-SX0E221ER when sourcing replacements for the obsolete SPSX221M0ER. This Panasonic part maintains identical electrical specifications (220 µF, 2.5 V, 9 mOhm ESR) while offering improved reliability through doubled lifetime rating (2000 hours versus 1000 hours at 105°C). The part is in Active product status, ensuring long-term availability. Extended operating temperature range (-55°C to 105°C) provides additional thermal margin. Ripple current capacity is doubled (6.3 A versus 3 A at 100 kHz), reducing thermal stress in the application. Physical dimensions are compatible with existing PCB layouts, with slightly reduced height (2.00 mm versus 2.10 mm).

For Enhanced Voltage Margin (Upgrade Path):

Select EEF-SX0G221ER when circuit design permits higher voltage rating. This part provides identical capacitance and ESR while rated for 4 V operation, offering 60% voltage headroom above the 2.5 V requirement. This upgrade is suitable for applications experiencing voltage transients or requiring enhanced reliability margin. Active product status and improved lifetime (2000 hours) apply. Ripple current capacity is doubled (6.3 A at 100 kHz).

For Lower ESR Performance (High Ripple Current Applications):

Select EEF-SX0E221E7 when application requires reduced equivalent series resistance. This part delivers 7 mOhm ESR (versus 9 mOhm), enabling 7 A ripple current capacity at 100 kHz (versus 3 A). Suitable for high-frequency switching applications or circuits with stringent ripple current requirements. Active product status and 2000-hour lifetime apply. Maintains 2.5 V rating and 220 µF capacitance.

For Same-Manufacturer Continuity:

Select 227XMPL2R5MG19X when maintaining Cornell Dubilier component sourcing is required. This part delivers identical electrical specifications to the obsolete SPSX221M0ER (220 µF, 2.5 V, 9 mOhm ESR, 1000-hour lifetime, 3 A ripple current). Active product status ensures availability. Suitable for direct substitution without circuit redesign.

Not Recommended for New Designs:

EEF-SX0E221R carries "Not For New Designs" status and should be avoided for new product development, despite meeting electrical specifications.

For Lower Ripple Current Tolerance:

EEF-CX0E221R is not recommended as primary substitute due to elevated ESR (15 mOhm versus 9 mOhm), which reduces ripple current capacity to 5.1 A and increases thermal dissipation.

Frequently Asked Questions (FAQ)

Q: Can EEF-SX0G221ER (4 V rated) be used in place of SPSX221M0ER (2.5 V rated)?

A: Yes. Higher voltage-rated capacitors are electrically compatible with lower-voltage applications. The 4 V rating provides additional safety margin and does not affect circuit operation. The 220 µF capacitance, 9 mOhm ESR, and package dimensions remain identical. This substitution is suitable for all applications where the original 2.5 V part was specified.

Q: What is the difference between EEF-SX0E221ER and EEF-SX0E221E7?

A: Both parts are 220 µF, 2.5 V Panasonic polymer capacitors in the 2917 package. The primary difference is ESR: EEF-SX0E221ER has 9 mOhm ESR with 6.3 A ripple current capacity, while EEF-SX0E221E7 has 7 mOhm ESR with 7 A ripple current capacity. Select EEF-SX0E221E7 for applications requiring lower impedance or higher ripple current handling. Both are Active status parts with 2000-hour lifetime.

Q: Is EEF-SX0E221R suitable for new product designs?

A: No. This part carries "Not For New Designs" product status, indicating Panasonic has designated it for legacy support only. Use EEF-SX0E221ER or EEF-SX0E221E7 for new designs.

Q: Will the substitute parts fit the existing PCB footprint?

A: Yes. All substitute parts use the 2917 (7343 Metric) package with identical land pattern dimensions (0.287" L × 0.169" W / 7.30 mm × 4.30 mm). Physical height varies slightly: SPSX221M0ER and 227XMPL2R5MG19X are 2.10 mm, while Panasonic EEF-SX series parts are 2.00 mm or 1.90 mm. These height differences do not affect PCB assembly compatibility.

Q: Why is the lifetime rating doubled in Panasonic substitutes?

A: Panasonic EEF-SX series parts are rated for 2000 hours at 105°C, compared to 1000 hours for the obsolete SPSX221M0ER. This reflects improved polymer electrolyte formulation and manufacturing processes. The extended lifetime improves long-term reliability without affecting electrical performance.

Q: Can I use EEF-CX0E221R as a substitute?

A: EEF-CX0E221R meets the 220 µF, 2.5 V, 2917 package requirements but has higher ESR (15 mOhm versus 9 mOhm). This increases impedance and reduces ripple current capacity to 5.1 A. Use only if ripple current requirements are below 5.1 A at 100 kHz. Panasonic EEF-SX series parts are preferred for equivalent or superior performance.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the original SPSX221M0ER compliance status. All parts carry ECCN EAR99 and HTSUS 8532.22.0020 classifications. Moisture Sensitivity Level (MSL) is 3 (168 hours) for the original part; verify MSL requirements for specific assembly processes.

Q: Is 227XMPL2R5MG19X a better choice than Panasonic alternatives?

A: 227XMPL2R5MG19X provides identical electrical specifications to the original SPSX221M0ER and maintains Cornell Dubilier sourcing continuity. However, Panasonic EEF-SX0E221ER offers improved lifetime (2000 versus 1000 hours) and doubled ripple current capacity (6.3 versus 3 A) at equivalent cost. Select based on supply chain preference and application requirements.

Q: What is the difference between Tape & Reel and standard packaging?

A: Tape & Reel (TR) packaging is standard for surface mount component assembly and is compatible with automated pick-and-place equipment. The SPSX221M0ER packaging format is not specified in available data; Panasonic substitutes are supplied in Tape & Reel format, which is the industry standard for 2917 package surface mount capacitors and poses no compatibility issues.

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