Panasonic EEF-SX0D181ER Equivalent & Substitute Parts

Part Overview

The Panasonic EEF-SX0D181ER is a 180 µF, 2 V aluminum polymer surface mount capacitor in the 2917 (7343 Metric) package. This component is part of the SP-Cap SX series and is actively produced for new designs. The capacitor features a 9 mOhm equivalent series resistance (ESR) and a rated lifetime of 2000 hours at 105°C, making it suitable for general-purpose applications requiring low ESR performance in compact form factors.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements shift to higher voltage ratings, or when procurement optimization is needed across manufacturing batches or packaging variants.

Substiute Parts

EEF-SX0D181ER

Panasonic Electronic ComponentsIn Stock: 1130EEF-SX0D181ER Datasheet

Current PartRFQ

EEF-SX0E181R

Panasonic Electronic ComponentsIn Stock: 10957EEF-SX0E181R Datasheet

UpgradeRFQ

EEF-SX0D181R

Panasonic Electronic ComponentsIn Stock: 4207EEF-SX0D181R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EEF-SX0D181ER is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 180 µF (exact match required)
• Tolerance: ±20% (exact match required)
• ESR: 9 mOhm (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Physical Dimensions: 0.287" L x 0.169" W, Height 0.079" max (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Lifetime @ Temperature: 2000 Hrs @ 105°C (exact match required)

Allowable Variation Parameters:

• Voltage Rating: May be equal to or higher than the main part (2 V or greater)
• Packaging Format: Tape & Reel (TR) acceptable for all variants
• Product Status: Active or Not For New Designs both acceptable for equivalent substitution

Based on these criteria, the following parts qualify as substitutes:

Parametric Equivalent (Same Voltage):

• EEF-SX0D181R: Identical electrical and mechanical specifications; differs only in packaging variant designation

Upgrade Substitute (Higher Voltage Rating):

• EEF-SX0E181R: 180 µF at 2.5 V rating; all other parameters identical to main part

Parameter Comparison

Engineering Selection Recommendations

For New Designs: The EEF-SX0D181ER is the recommended selection, as it carries Active product status and is supported for new design implementations. This part is currently in production with established supply chain availability.

For Existing Designs Requiring Substitution: The EEF-SX0D181R serves as a parametric equivalent when the primary part becomes unavailable. Both parts share identical electrical and mechanical specifications and are interchangeable at the circuit level. The EEF-SX0D181R is marked as Not For New Designs but remains suitable for sustaining production and field replacements.

For Designs Requiring Voltage Margin Enhancement: The EEF-SX0E181R provides a higher voltage rating (2.5 V versus 2 V) while maintaining all other electrical and mechanical parameters. This substitute is appropriate when circuit design allows for voltage derating or when additional safety margin is required. The EEF-SX0E181R is also marked as Not For New Designs.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility across industrial and consumer applications.

Frequently Asked Questions (FAQ)

Q: Can EEF-SX0D181R be used as a direct replacement for EEF-SX0D181ER?

A: Yes. Both parts are parametric equivalents with identical capacitance (180 µF), voltage rating (2 V), tolerance (±20%), ESR (9 mOhm), package (2917), and physical dimensions. The difference is packaging variant designation only. Both are suitable for direct substitution at the circuit level.

Q: What is the difference between EEF-SX0D181ER and EEF-SX0E181R?

A: The primary difference is voltage rating: EEF-SX0D181ER is rated at 2 V, while EEF-SX0E181R is rated at 2.5 V. All other specifications—capacitance, tolerance, ESR, package, dimensions, and thermal characteristics—are identical. The EEF-SX0E181R can be used in applications where the circuit voltage does not exceed 2.5 V and where additional voltage margin is beneficial.

Q: Are all three parts available in the same package format?

A: Yes. All three parts use the 2917 (7343 Metric) surface mount package with identical physical dimensions of 7.30mm x 4.30mm x 2.00mm maximum height. They are compatible with the same PCB footprint and reflow soldering process.

Q: What does "Not For New Designs" mean for EEF-SX0D181R and EEF-SX0E181R?

A: This product status indicates that Panasonic is not recommending these parts for new circuit designs. However, they remain available for sustaining production of existing designs and for field replacements. New designs should prioritize the EEF-SX0D181ER, which carries Active status.

Q: Can I use EEF-SX0E181R in a circuit designed for 2 V operation?

A: Yes. A 2.5 V rated capacitor can be used in a 2 V circuit. The higher voltage rating provides additional safety margin and does not negatively impact circuit performance. The capacitance, ESR, and thermal characteristics remain unchanged.

Q: Are there any thermal or ripple current differences between these parts?

A: All three parts share identical thermal specifications: 2000 hours lifetime at 105°C and -55°C to 105°C operating range. The EEF-SX0D181ER specifies a ripple current of 6.3 A at 100 kHz; ripple current data is not provided for the other two variants in the available documentation.

Q: Do all parts meet the same regulatory requirements?

A: Yes. All three parts are ROHS3 compliant and REACH Unaffected, ensuring compatibility with current industrial and consumer product regulations.