SPCX221M04R - Equivalent & Substitute Parts

Part Overview

The SPCX221M04R is a 220 µF aluminum-polymer surface mount capacitor rated at 4 V, manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This part is classified as obsolete, making identification of active equivalent components necessary for new designs and ongoing production support. Aluminum-polymer capacitors in this capacity and voltage range are widely used in general-purpose power supply filtering and energy storage applications where low ESR and compact form factors are required.

Substiute Parts

SPCX221M04R

Cornell Dubilier Electronics (CDE)In Stock: 734SPCX221M04R Datasheet

Current PartRFQ

EEF-CX0G221R

Panasonic Electronic ComponentsIn Stock: 13485EEF-CX0G221R Datasheet

DirectRFQ

ECASD60G227M010K00

Murata ElectronicsIn Stock: 1604ECASD60G227M010K00 Datasheet

SimilarRFQ

EEF-CX0G221XR

Panasonic Electronic ComponentsIn Stock: 9971EEF-CX0G221XR Datasheet

SimilarRFQ

EEF-SX0G221ER

Panasonic Electronic ComponentsIn Stock: 46740EEF-SX0G221ER Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPCX221M04R is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

• Capacitance: 220 µF (exact match required)
• Voltage Rating: 4 V (exact match or higher permitted)
• Tolerance: ±20% (exact match required)
• Package/Case: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)

Additional Parameter Considerations:

• ESR (Equivalent Series Resistance): 15 mOhm nominal, with variations of ±3-6 mOhm acceptable within polymer capacitor manufacturing tolerances
• Lifetime @ 105°C: 1000 Hours minimum required
• Operating Temperature Range: Must span minimum -40°C to 105°C
• RoHS Compliance: ROHS3 Compliant (consistent with original part)

The four substitute parts identified (EEF-CX0G221R, ECASD60G227M010K00, EEF-CX0G221XR, and EEF-SX0G221ER) meet all core substitution criteria and are electrically and mechanically compatible with the SPCX221M04R within the aluminum-polymer capacitor product category.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: EEF-CX0G221R

The EEF-CX0G221R (Panasonic SP-Cap CX series) is the direct equivalent substitute for the SPCX221M04R. This part is active in production, ensuring long-term availability. It maintains identical core electrical parameters (220 µF, 4 V, ±20%, 15 mOhm ESR) and mechanical compatibility (2917 package, 1.90 mm seated height). The extended lifetime rating of 2000 hours @ 105°C and expanded operating temperature range (-55°C to 105°C) provide enhanced reliability margins. ROHS3 compliance is maintained.

Secondary Recommendations:

EEF-CX0G221XR (Panasonic SP-Cap CX series) provides an active alternative with improved ripple current handling (5.6 A @ 100 kHz) and ESR reduction to 12 mOhm, with identical package dimensions and seated height. Extended lifetime and operating range are equivalent to EEF-CX0G221R.

EEF-SX0G221ER (Panasonic SP-Cap SX series) offers the lowest ESR specification (9 mOhm) and highest ripple current capacity (6.3 A @ 100 kHz) among active parts, enabling superior performance in high-frequency switching applications. Active production status and ROHS3 compliance are confirmed. Seated height is 2.00 mm (0.004" above primary recommendations).

Not Recommended for New Designs: ECASD60G227M010K00

The ECASD60G227M010K00 (Murata ECAS series) is classified as obsolete, consistent with the original part. While it meets core electrical and mechanical criteria, its obsolete status limits long-term component availability. Additionally, the seated height of 2.80 mm exceeds primary substitute dimensions by 0.90 mm, potentially affecting board-level layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can EEF-CX0G221R be used directly as a replacement for SPCX221M04R without design modifications?

A: Yes. The EEF-CX0G221R matches all critical electrical specifications (220 µF, 4 V, ±20%, 15 mOhm ESR) and physical dimensions (2917 package, 0.075" seated height). Drop-in compatibility is confirmed for standard solder pad layouts designed for the SPCX221M04R.

Q: What is the advantage of EEF-SX0G221ER over EEF-CX0G221R?

A: The EEF-SX0G221ER reduces ESR from 15 mOhm to 9 mOhm and increases ripple current capacity from 5.1 A to 6.3 A @ 100 kHz. These parameters benefit high-frequency power delivery applications where lower dissipation and higher ripple current handling are critical. Seated height difference is 0.004" (0.10 mm).

Q: Why is ECASD60G227M010K00 listed as obsolete when it appears electrically equivalent?

A: Product status (obsolete vs. active) is determined by manufacturer production classification and is based solely on the provided part data. The ECASD60G227M010K00 is classified as obsolete by Murata, while Panasonic alternatives remain in active production with confirmed long-term availability.

Q: Are there height clearance concerns with substitute parts?

A: EEF-CX0G221R and EEF-CX0G221XR maintain the original 1.90 mm seated height. EEF-SX0G221ER is 2.00 mm (0.004" taller). ECASD60G227M010K00 is 2.80 mm and requires verification against board assembly clearance constraints before substitution.

Q: Do all substitute parts carry identical RoHS certifications?

A: Yes. All identified substitutes are ROHS3 compliant, matching the regulatory compliance of the original SPCX221M04R.

Q: What is the difference between "Direct" and "Similar" substitute classifications?

A: Direct substitutes (EEF-CX0G221R) match the original part across all specified electrical and mechanical parameters with no variance. Similar substitutes (ECASD60G227M010K00, EEF-CX0G221XR, EEF-SX0G221ER) meet core substitution criteria but introduce minor variations in performance parameters (ESR, ripple current, height) or product status that require design review before implementation.