EEF-UD0E181CE Equivalent & Substitute Parts

Part Overview

The EEF-UD0E181CE is a 180 µF, 2.5 V aluminum polymer capacitor in a 2917 (7343 Metric) surface mount package manufactured by Panasonic Electronic Components. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. Finding equivalent or substitute parts is necessary to support ongoing maintenance, repair, and redesign efforts for legacy systems or when original inventory becomes depleted.

Substiute Parts

EEF-UD0E181CE

Panasonic Electronic ComponentsIn Stock: 775EEF-UD0E181CE Datasheet

Current PartRFQ

EEF-SX0J181ER

Panasonic Electronic ComponentsIn Stock: 4269EEF-SX0J181ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the EEF-UD0E181CE is determined by the following critical parameters:

• Capacitance Value: Must be 180 µF (exact match required)
• Package / Case: Must be 2917 (7343 Metric) to ensure mechanical and electrical compatibility with existing PCB layouts
• Mounting Type: Must be Surface Mount to maintain assembly compatibility
• Tolerance: ±20% tolerance is acceptable for general purpose applications
• Type: Aluminum polymer construction maintains electrical characteristics

The substitute part EEF-SX0J181ER meets all these core requirements. While it features a higher voltage rating (6.3 V vs. 2.5 V) and improved performance specifications, these characteristics do not prevent substitution in applications designed for the original 2.5 V part, as higher-rated components operate safely at lower voltages.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0J181ER is a direct functional substitute for the EEF-UD0E181CE based on the following engineering criteria:

• Identical Capacitance and Package: Both parts share the same 180 µF capacitance value and 2917 (7343 Metric) package, ensuring direct PCB compatibility without layout modifications.
• Active Product Status: The EEF-SX0J181ER is in active production, providing reliable long-term availability and supply chain stability compared to the obsolete EEF-UD0E181CE.
• Regulatory Compliance: The substitute part carries ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements.
• Enhanced Performance: The substitute offers improved specifications including extended operating temperature range (-55°C vs. -40°C minimum), doubled lifetime rating (2000 Hrs vs. 1000 Hrs @ 105°C), and specified ESR of 9 mOhm, providing superior reliability in demanding applications.
• Voltage Derating: The higher 6.3 V rating of the substitute part operates safely at the original 2.5 V specification, with no functional or reliability degradation.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0J181ER directly replace the EEF-UD0E181CE without PCB modifications?

A: Yes. Both parts use the identical 2917 (7343 Metric) package with matching surface mount land sizes (0.287" L x 0.169" W / 7.30mm x 4.30mm). No PCB layout changes are required.

Q: Why does the substitute part have a higher voltage rating (6.3 V vs. 2.5 V)?

A: Higher voltage-rated capacitors can safely operate at lower voltages. The 6.3 V rating of the EEF-SX0J181ER does not prevent its use in 2.5 V applications; it simply indicates the component is rated for higher stress conditions.

Q: What is the significance of the improved lifetime rating in the substitute part?

A: The EEF-SX0J181ER provides 2000 Hrs @ 105°C compared to 1000 Hrs @ 105°C for the original part. This doubled lifetime rating indicates enhanced reliability and longer operational life under thermal stress, beneficial for applications requiring extended service intervals.

Q: Are there any compliance or regulatory differences between these parts?

A: The EEF-SX0J181ER includes ROHS3 compliance and REACH Unaffected status, meeting current environmental regulations. The original EEF-UD0E181CE compliance status is not specified in available documentation.

Q: What does the 9 mOhm ESR specification mean for the substitute part?

A: ESR (Equivalent Series Resistance) of 9 mOhm indicates the internal resistance of the capacitor. This specified value in the substitute part provides predictable electrical behavior, particularly important in high-frequency or ripple current applications.

Q: Is the extended operating temperature range (-55°C to 105°C) of the substitute part relevant for my application?

A: The extended lower temperature limit (-55°C vs. -40°C) provides additional margin for applications operating in cold environments. If your application operates within the original -40°C to 105°C range, both parts are functionally equivalent in this regard.