EEF-CD0D181R Equivalent & Substitute Parts

Part Overview

The EEF-CD0D181R is a 180 µF, 2 V aluminum polymer surface mount capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) package. This component is rated for 1000 hours at 105°C and is designed for general purpose applications. The part is currently obsolete, making identification of compatible substitutes essential for ongoing design support and production continuity.

Substiute Parts

EEF-CD0D181R

Panasonic Electronic ComponentsIn Stock: 1029EEF-CD0D181R Datasheet

Current PartRFQ

EEF-CX0J181R

Panasonic Electronic ComponentsIn Stock: 9665EEF-CX0J181R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The EEF-CX0J181R qualifies as a direct substitute based on the following alignment of critical parameters:

Matching Parameters:

• Capacitance: 180 µF (identical)
• Tolerance: ±20% (identical)
• Package / Case: 2917 (7343 Metric) (identical)
• Mounting Type: Surface Mount (identical)
• Physical Dimensions: 0.287" L x 0.169" W, Height 0.075" (identical)
• Type: Aluminum Polymer (identical)

Enhanced Parameters in Substitute:

• Voltage Rating: 6.3 V (higher than 2 V requirement)
• Operating Temperature Range: -55°C ~ 105°C (extended lower bound)
• Lifetime @ Temperature: 2000 Hrs @ 105°C (improved from 1000 Hrs)
• ESR: 15 mOhm (specified, versus unspecified in main part)
• Ripple Current @ High Frequency: 5.1 A @ 100 kHz (specified)
• Product Status: Active (versus Obsolete)
• RoHS3 Compliant and REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0J181R is a suitable replacement for the obsolete EEF-CD0D181R in applications where the circuit voltage rating does not exceed 2 V. The substitute part maintains identical capacitance, tolerance, package dimensions, and mounting configuration, ensuring direct PCB compatibility without layout modifications.

The EEF-CX0J181R offers improved reliability through extended operating temperature range (-55°C versus -40°C minimum), doubled thermal lifetime (2000 Hrs versus 1000 Hrs @ 105°C), and active product status with current manufacturing support. The higher voltage rating (6.3 V) provides design margin and does not create functional conflicts in 2 V applications.

Compliance certifications (RoHS3 and REACH Unaffected) on the substitute part support modern manufacturing and regulatory requirements. The specified ESR value (15 mOhm) and ripple current rating (5.1 A @ 100 kHz) enable precise circuit performance analysis where the original part lacked these specifications.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0J181R directly replace the EEF-CD0D181R on existing PCBs?

A: Yes. Both parts use identical 2917 (7343 Metric) packaging with matching physical dimensions (0.287" L x 0.169" W, 0.075" height). No PCB layout or footprint modifications are required.

Q: Is the higher voltage rating (6.3 V) of the substitute part a concern for a 2 V application?

A: No. A capacitor rated for 6.3 V operates safely at 2 V. The higher voltage rating provides design margin and does not affect circuit functionality or reliability in lower voltage applications.

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

A: The EEF-CX0J181R is rated for 2000 hours at 105°C compared to 1000 hours for the original part. This doubling of thermal lifetime indicates improved long-term reliability and extended operational life under elevated temperature conditions.

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

A: The EEF-CX0J181R carries RoHS3 compliance and REACH Unaffected status, supporting current environmental and regulatory requirements. The original part specifications do not document these certifications.

Q: Does the specified ESR value of the substitute part affect circuit design?

A: The EEF-CX0J181R specifies 15 mOhm ESR, enabling precise ripple current and frequency response calculations. The original part does not specify ESR. For applications sensitive to ESR characteristics, the substitute part provides measurable performance data for design verification.

Q: What is the packaging difference between the main part and substitute?

A: The main part (EEF-CD0D181R) is supplied in standard packaging. The substitute part (EEF-CX0J181R) is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. Both parts are identical in component form and function.