SPA221M0ER Equivalent & Substitute Parts Reference

Part Overview

The SPA221M0ER 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, indicating it is no longer in active production. The identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and redesign activities for systems utilizing this capacitor. Substitute parts must maintain electrical and mechanical compatibility while meeting the same functional requirements.

Key Parameters

Parameter	Value	Unit	Criticality
Capacitance	220	µF	Critical
Voltage Rating	2.5	V	Critical
Tolerance	±20%	%	Critical
Package / Case	2917 (7343 Metric)	-	Critical
Mounting Type	Surface Mount	-	Critical
ESR (Equivalent Series Resistance)	7	mOhm	Important
Lifetime @ Temperature	1000	Hrs @ 105°C	Important
Operating Temperature Range	-40 to 105	°C	Important
Ripple Current @ 100 kHz	3.5	A	Important
Type	Polymer	-	Critical

Substitute Part Grouping Explanation

Substitution of the SPA221M0ER is determined by strict equivalence in the following parameters:

Critical Equivalence Parameters:

Capacitance: 220 µF (exact match required)
Voltage Rating: 2.5 V (exact match required)
Tolerance: ±20% (exact match required)
Package / Case: 2917 (7343 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Dielectric Type: Aluminum Polymer (exact match required)

Performance Parameters (Allowable Variation):

ESR: Substitute parts may have ESR values ranging from 7 mOhm to 15 mOhm. Lower ESR values indicate improved performance characteristics.
Lifetime @ Temperature: Substitute parts may have extended lifetime ratings (2000 Hrs @ 105°C) compared to the original 1000 Hrs @ 105°C.
Operating Temperature Range: Substitute parts may have extended lower temperature limits (-55°C vs. -40°C).
Ripple Current @ 100 kHz: Substitute parts may have higher ripple current ratings, indicating enhanced capability.

Compliance Parameters:

RoHS3 Compliance: All substitute parts must maintain RoHS3 compliance status.
REACH Status: All substitute parts must maintain REACH Unaffected status.

Substitute parts are classified into two categories: Direct Manufacturer Substitutes (matching all critical and performance parameters) and Parametric Equivalents (matching critical parameters with minor performance variations).

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance (%)	ESR (mOhm)	Lifetime @ 105°C (Hrs)	Operating Temp (°C)	Ripple Current @ 100 kHz (A)	Package	Product Status	Inventory (Pcs)
SPA221M0ER	Cornell Dubilier Electronics	220	2.5	±20	7	1000	-40 to 105	3.5	2917 (7343)	Obsolete	1115
EEF-SX0E221E7	Panasonic Electronic Components	220	2.5	±20	7	2000	-55 to 105	7	2917 (7343)	Active	6497
EEF-SX0E221ER	Panasonic Electronic Components	220	2.5	±20	9	2000	-55 to 105	6.3	2917 (7343)	Active	18204
EEF-SX0E221R	Panasonic Electronic Components	220	2.5	±20	9	2000	-55 to 105	Not Specified	2917 (7343)	Not For New Designs	7090
EEF-CX0E221R	Panasonic Electronic Components	220	2.5	±20	15	2000	-55 to 105	5.1	2917 (7343)	Active	731
EEF-SD0E221ER	Panasonic Electronic Components	220	2.5	±20	7	1000	-40 to 105	3.5	2917 (7343)	Obsolete	4797

Engineering Selection Recommendations

Primary Recommendation: EEF-SX0E221E7

The EEF-SX0E221E7 manufactured by Panasonic Electronic Components is the optimal direct substitute for the SPA221M0ER. This part maintains identical critical electrical parameters (220 µF, 2.5 V, ±20% tolerance) and identical ESR (7 mOhm), ensuring functional equivalence. The part is in Active product status, ensuring long-term availability and supply chain stability. It provides extended lifetime rating (2000 Hrs @ 105°C vs. 1000 Hrs), extended operating temperature range (-55°C to 105°C vs. -40°C to 105°C), and higher ripple current capability (7 A vs. 3.5 A @ 100 kHz). RoHS3 and REACH compliance are maintained. Packaging is Tape & Reel (TR), suitable for automated assembly. Inventory availability is substantial (6497 pcs).

Secondary Recommendation: EEF-SX0E221ER

The EEF-SX0E221ER is an active Panasonic substitute with identical critical parameters. ESR is slightly elevated at 9 mOhm (vs. 7 mOhm), representing a 28.6% increase. Lifetime and temperature range match EEF-SX0E221E7. Ripple current is 6.3 A @ 100 kHz. This part offers the highest inventory availability (18204 pcs) and is suitable for applications where the slightly higher ESR does not impact performance requirements.

Alternative Recommendation: EEF-CX0E221R

The EEF-CX0E221R is an active Panasonic substitute with identical critical parameters. ESR is 15 mOhm, representing a 114% increase over the original part. This part is suitable only for applications where ESR is not a limiting design factor. Ripple current is 5.1 A @ 100 kHz. Inventory availability is limited (731 pcs).

Parametric Equivalent: EEF-SD0E221ER

The EEF-SD0E221ER is a Panasonic parametric equivalent with identical electrical and thermal characteristics to the SPA221M0ER (7 mOhm ESR, 1000 Hrs @ 105°C, -40°C to 105°C operating range, 3.5 A ripple current). This part is classified as Obsolete, limiting its suitability for new applications. It is suitable only for direct replacement in existing systems where supply is available (4797 pcs in stock).

Not Recommended: EEF-SX0E221R

The EEF-SX0E221R is classified as "Not For New Designs" and should not be selected for new applications or redesigns. While it maintains critical electrical parameters, its product status restricts its use to legacy system support only.

Frequently Asked Questions (FAQ)

Q1: Can EEF-SX0E221ER be used as a direct replacement for SPA221M0ER?

A: Yes. The EEF-SX0E221ER maintains all critical electrical parameters: 220 µF capacitance, 2.5 V voltage rating, ±20% tolerance, and 2917 (7343 Metric) package. The ESR increase from 7 mOhm to 9 mOhm is within acceptable variation for general-purpose applications. The part is in Active product status with substantial inventory availability.

Q2: What is the difference between EEF-SX0E221E7 and EEF-SX0E221ER?

A: Both parts are Panasonic SP-Cap SX series with identical capacitance, voltage, tolerance, and package. The primary difference is ESR: EEF-SX0E221E7 has 7 mOhm (matching the original SPA221M0ER), while EEF-SX0E221ER has 9 mOhm. Both have 2000 Hrs @ 105°C lifetime and -55°C to 105°C operating range. EEF-SX0E221E7 is preferred when ESR matching is critical; EEF-SX0E221ER offers higher inventory availability.

Q3: Why is EEF-CX0E221R listed as a substitute if it has higher ESR?

A: The EEF-CX0E221R maintains all critical electrical parameters (220 µF, 2.5 V, ±20%, 2917 package) required for functional substitution. The 15 mOhm ESR represents a performance variation rather than a functional incompatibility. This part is suitable for applications where ESR is not a design-limiting factor. Selection should be based on specific circuit requirements.

Q4: Can I use EEF-SD0E221ER as a replacement?

A: The EEF-SD0E221ER is a parametric equivalent with identical electrical characteristics to the SPA221M0ER (7 mOhm ESR, 1000 Hrs @ 105°C, 3.5 A ripple current). However, it is classified as Obsolete, which limits its suitability for new applications. It is appropriate only for direct replacement in existing systems where supply is available and long-term availability is not a concern.

Q5: What does "Not For New Designs" mean for EEF-SX0E221R?

A: "Not For New Designs" indicates that Panasonic has discontinued active support for this part number. While it may be available in inventory, it should not be selected for new product designs or redesigns. This classification restricts its use to legacy system maintenance and repair only.

Q6: Are all substitute parts RoHS3 and REACH compliant?

A: Yes. All substitute parts listed maintain RoHS3 Compliance and REACH Unaffected status, matching the compliance profile of the original SPA221M0ER.

Q7: What is the significance of the extended operating temperature range in substitute parts?

A: Substitute parts from Panasonic offer extended lower temperature limits (-55°C vs. -40°C). This represents an expanded operating envelope and does not restrict compatibility. Applications requiring operation only down to -40°C are fully supported by all substitute parts.

Q8: How does the increased ripple current rating affect substitution?

A: Increased ripple current ratings (7 A in EEF-SX0E221E7 vs. 3.5 A in SPA221M0ER) represent enhanced capability. This does not restrict substitution; it indicates the substitute part can handle equal or greater ripple current stress. Applications designed for the original 3.5 A rating are fully supported by higher-rated substitutes.

Q9: What packaging formats are available for substitute parts?

A: EEF-SX0E221E7, EEF-SX0E221ER, EEF-SX0E221R, and EEF-CX0E221R are supplied in Tape & Reel (TR) format, suitable for automated assembly. EEF-SD0E221ER is supplied in Cut Tape (CT) & Digi-Reel® format. All maintain the same 2917 (7343 Metric) land pattern and mounting footprint.

Q10: Which substitute part should I select for a new design?

A: For new designs, select EEF-SX0E221E7 as the primary choice. It is in Active product status, maintains ESR matching with the original part, offers extended lifetime and temperature range, and has substantial inventory availability. If ESR matching is not critical and maximum inventory availability is preferred, EEF-SX0E221ER is an acceptable alternative.

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