SPA181M02R Equivalent & Substitute Parts

Part Overview

The SPA181M02R is a 180 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 it is no longer in active production. The identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this capacitor specification.

Substiute Parts

SPA181M02R

Cornell Dubilier Electronics (CDE)In Stock: 829SPA181M02R Datasheet

Current PartRFQ

EEF-SX0D181ER

Panasonic Electronic ComponentsIn Stock: 1130EEF-SX0D181ER Datasheet

DirectRFQ

EEF-SX0D181R

Panasonic Electronic ComponentsIn Stock: 4207EEF-SX0D181R Datasheet

DirectRFQ

EEF-SX0E181ER

Panasonic Electronic ComponentsIn Stock: 1085EEF-SX0E181ER Datasheet

UpgradeRFQ

EEF-SX0E181R

Panasonic Electronic ComponentsIn Stock: 10957EEF-SX0E181R Datasheet

UpgradeRFQ

EEF-SX0G181ER

Panasonic Electronic ComponentsIn Stock: 877EEF-SX0G181ER Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPA181M02R is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Capacitance: 180 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• ESR: 9 mOhm (exact match required)
• Type: Aluminum Polymer (exact match required)

Allowable Variations:

• Voltage Rating: Equal to or greater than 2 V
• Lifetime @ Temperature: Equal to or greater than 1000 Hrs @ 105°C
• Operating Temperature Range: Equal to or greater than -40°C ~ 105°C
• Ripple Current @ High Frequency: Equal to or greater than 3 A @ 100 kHz

Substitute parts are grouped into two categories: direct equivalents (matching 2 V voltage rating) and upgrades (higher voltage ratings with identical electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (2 V Rating):

EEF-SX0D181ER is the primary direct equivalent to the SPA181M02R. This part maintains identical electrical specifications (180 µF, 2 V, ±20%, 9 mOhm) and mechanical compatibility (2917 package, surface mount). The EEF-SX0D181ER carries Active product status and is ROHS3 compliant. It provides extended lifetime (2000 Hrs @ 105°C versus 1000 Hrs) and expanded operating temperature range (-55°C ~ 105°C versus -40°C ~ 105°C).

EEF-SX0D181R is functionally equivalent but carries Not For New Designs status, limiting its application to legacy system support or maintenance scenarios.

Upgrade Options (Higher Voltage Ratings):

EEF-SX0E181ER (2.5 V rating) and EEF-SX0G181ER (4 V rating) are voltage-upgraded alternatives. Both maintain identical capacitance, tolerance, ESR, and package specifications while providing higher voltage headroom. Both carry Active product status and ROHS3 compliance. These upgrades are suitable for applications where circuit voltage margins require additional safety or where design flexibility permits higher voltage ratings.

EEF-SX0E181R carries Not For New Designs status and is not recommended for new applications.

All substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can EEF-SX0D181ER directly replace SPA181M02R without circuit modification?

A: Yes. EEF-SX0D181ER maintains identical electrical parameters (180 µF, 2 V, ±20%, 9 mOhm) and mechanical compatibility (2917 package, surface mount). No circuit modification is required. The extended lifetime and expanded temperature range provide additional performance margin.

Q: What is the difference between EEF-SX0D181ER and EEF-SX0D181R?

A: Both parts are electrically and mechanically identical. The distinction is product status: EEF-SX0D181ER is Active, while EEF-SX0D181R is Not For New Designs. For new applications, EEF-SX0D181ER is the appropriate selection.

Q: Can I use EEF-SX0G181ER (4 V) in place of SPA181M02R (2 V)?

A: Yes. EEF-SX0G181ER is a voltage upgrade that maintains all other electrical and mechanical specifications. The higher voltage rating (4 V) is compatible with 2 V circuit applications and provides additional voltage margin. Physical dimensions and mounting characteristics are identical.

Q: Are all substitute parts in the same 2917 package?

A: Yes. All substitute parts listed use the 2917 (7343 Metric) package with identical surface mount land size (0.287" L x 0.169" W / 7.30mm x 4.30mm). Physical compatibility with existing PCB layouts is maintained.

Q: What is the significance of the "ER" and "R" suffixes in Panasonic part numbers?

A: The "ER" suffix indicates Tape & Reel packaging with Active product status. The "R" suffix indicates Tape & Reel packaging with Not For New Designs status. Both are surface mount compatible; the distinction relates to product lifecycle and availability for new design applications.

Q: Do all substitute parts meet the same compliance standards as SPA181M02R?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original SPA181M02R component.

Q: What is the ripple current capability difference between SPA181M02R and EEF-SX0D181ER?

A: SPA181M02R is rated for 3 A @ 100 kHz. EEF-SX0D181ER is rated for 6.3 A @ 100 kHz. The substitute provides double the ripple current capacity, offering improved performance margin in high-frequency applications.