ESRH181M02R Equivalent & Substitute Parts Reference

Part Overview

The ESRH181M02R 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 discontinued production and limited availability for new designs. The part delivers 15 mOhm equivalent series resistance with a 1000-hour lifetime rating at 105°C, suitable for general-purpose applications requiring compact form factors and low ESR characteristics.

Identifying equivalent substitute parts is necessary due to the obsolete status of the ESRH181M02R. Active production alternatives with compatible electrical and mechanical specifications ensure design continuity and supply chain reliability for applications currently using this component.

Substiute Parts

ESRH181M02R

Cornell Dubilier Electronics (CDE)In Stock: 1088ESRH181M02R Datasheet

Current PartRFQ

EEF-CT0G181R

Panasonic Electronic ComponentsIn Stock: 9110EEF-CT0G181R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ESRH181M02R is determined by strict alignment with the following parameters:

Mandatory Matching Parameters:

• Capacitance: 180 µF (exact match required)
• Package / Case: 2917 (7343 Metric) (physical footprint compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Type: Polymer (electrochemical technology)
• Tolerance: ±20% or tighter (capacitance accuracy)

Allowable Variation Parameters:

• Voltage Rating: Substitute must be equal to or greater than 2 V (higher voltage ratings provide design margin)
• ESR: Substitute must be equal to or less than 15 mOhm (lower ESR improves performance)
• Lifetime @ Temperature: Substitute may exceed 1000 Hrs @ 105°C (improved reliability)
• Operating Temperature Range: Must encompass or match -55°C ~ 105°C

The EEF-CT0G181R from Panasonic Electronic Components meets all mandatory matching criteria and provides enhanced performance in allowable variation parameters, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CT0G181R qualifies as a direct substitute for the ESRH181M02R based on the following engineering criteria:

Electrical Compatibility: Both components share identical capacitance (180 µF), tolerance (±20%), ESR (15 mOhm), and operating temperature range (-55°C ~ 105°C). The EEF-CT0G181R provides a higher voltage rating (4 V versus 2 V), which is compatible with applications designed for the 2 V rated part and provides additional design margin.

Mechanical Compatibility: Both parts utilize the 2917 (7343 Metric) surface mount package with identical land pattern dimensions (0.287" L x 0.169" W / 7.30mm x 4.30mm). Direct PCB footprint compatibility is confirmed.

Regulatory Compliance: Both components are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8532.22.0020) classifications, ensuring regulatory equivalence.

Product Status and Availability: The EEF-CT0G181R maintains active production status with 9079 pieces in stock, compared to the obsolete ESRH181M02R with limited remaining inventory (1003 pieces). Selection of the Panasonic part ensures long-term supply chain continuity.

Performance Enhancement: The substitute part delivers improved thermal lifetime (2000 Hrs @ 105°C versus 1000 Hrs) and higher ripple current capability (5.1 A @ 100 kHz versus 2.5 A), providing performance benefits without design modification.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CT0G181R directly replace the ESRH181M02R on existing PCBs?

A: Yes. Both components share identical 2917 (7343 Metric) package dimensions and surface mount land patterns. No PCB layout modifications are required for physical substitution.

Q: Does the higher voltage rating (4 V) of the EEF-CT0G181R affect circuit operation?

A: No. A capacitor with a higher voltage rating operates normally in circuits designed for lower voltages. The 4 V rating of the substitute provides additional design margin and does not alter electrical behavior in a 2 V application.

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

A: Both components are ROHS3 compliant with identical ECCN and HTSUS classifications. No compliance barriers exist for substitution.

Q: What is the significance of the improved lifetime rating (2000 Hrs vs. 1000 Hrs)?

A: The EEF-CT0G181R provides double the thermal lifetime at 105°C, indicating enhanced reliability and extended operational life in high-temperature environments. This represents a performance improvement over the original part.

Q: How do the ripple current ratings differ, and does this matter for my application?

A: The EEF-CT0G181R supports 5.1 A ripple current at 100 kHz compared to 2.5 A for the ESRH181M02R. If your application requires ripple current handling below 2.5 A, both parts are equivalent. If ripple current exceeds 2.5 A, the substitute provides additional capability.

Q: Is the packaging format (Tape & Reel) of the EEF-CT0G181R compatible with my assembly process?

A: Tape & Reel packaging is standard for surface mount component assembly. Confirm compatibility with your specific pick-and-place equipment and tape specifications. The component itself is identical regardless of packaging format.

Q: What is the ESR significance, and why is it identical in both parts?

A: Equivalent Series Resistance (ESR) determines ripple current handling, thermal performance, and frequency response. Identical 15 mOhm ESR values ensure equivalent electrical performance in power delivery and filtering applications.