EEF-UE0J181LR Equivalent & Substitute Parts

Part Overview

The EEF-UE0J181LR is a 180 µF, 6.3 V aluminum polymer surface mount capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 105°C and is rated for 1000 hours at 105°C with a 7 mOhm equivalent series resistance (ESR).

Substiute Parts

EEF-UE0J181LR

Panasonic Electronic ComponentsIn Stock: 1199EEF-UE0J181LR Datasheet

Current PartRFQ

EEF-CX0J181R

Panasonic Electronic ComponentsIn Stock: 9665EEF-CX0J181R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UE0J181LR is determined by strict equivalence in the following parameters:

• Capacitance Value: 180 µF (exact match required)
• Voltage Rating: 6.3 V (exact match required)
• Package Type: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Dielectric Type: Aluminum Polymer (exact match required)
• Tolerance: ±20% (exact match required)

The substitute part EEF-CX0J181R meets all these core electrical and mechanical parameters. Variations in ESR, lifetime rating, and operating temperature range do not disqualify a part from substitution, provided the core parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0J181R is a direct substitute for the obsolete EEF-UE0J181LR. Both parts are manufactured by Panasonic Electronic Components and share identical electrical specifications for capacitance, voltage rating, and tolerance. The substitute part is currently in active production status with ROHS3 compliance and REACH unaffected certification, making it suitable for new designs and production continuity.

The EEF-CX0J181R offers improved reliability with a 2000-hour lifetime rating at 105°C compared to the 1000-hour rating of the original part. The substitute also features a lower seated height (1.90mm versus 4.20mm), which may provide layout advantages in space-constrained applications. The higher ESR value (15 mOhm versus 7 mOhm) and extended operating temperature range (-55°C to 105°C) are secondary characteristics that do not affect core substitution compatibility.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0J181R be used as a direct replacement for the EEF-UE0J181LR?

A: Yes. Both parts share identical capacitance (180 µF), voltage rating (6.3 V), package type (2917 / 7343 Metric), and mounting configuration (surface mount). The substitute meets all core electrical and mechanical requirements for direct substitution.

Q: What are the differences between these two parts?

A: The primary differences are product status, ESR, lifetime rating, and physical height. The EEF-CX0J181R is an active product with ROHS3 compliance, a 2000-hour lifetime at 105°C, 15 mOhm ESR, and a 1.90mm seated height. The EEF-UE0J181LR is obsolete with a 1000-hour lifetime, 7 mOhm ESR, and a 4.20mm seated height.

Q: Will the lower seated height of the substitute part affect PCB layout?

A: The EEF-CX0J181R has a lower seated height (1.90mm) compared to the original part (4.20mm). This difference may require PCB layout verification to ensure clearance and component placement compatibility, but the footprint dimensions remain identical.

Q: Are there compliance or regulatory differences?

A: The EEF-CX0J181R is ROHS3 compliant and REACH unaffected. Compliance information for the original EEF-UE0J181LR is not specified in the provided data.

Q: Can I use the EEF-CX0J181R in applications requiring the lower ESR of the original part?

A: The substitute part has a higher ESR (15 mOhm versus 7 mOhm). Applications with strict ESR requirements should be evaluated against the substitute's specifications to confirm suitability.