CMT2-4-R Common Mode Choke Equivalent & Substitute Parts

Part Overview

The CMT2-4-R is a 2-line common mode choke manufactured by Eaton - Electronics Division, designed for power line filtering applications. This component features 8 mH inductance at 10 kHz with a maximum current rating of 2.8A and typical DC resistance of 100 mOhm. The part is mounted through-hole with vertical 4-pin configuration and operates across -40°C to 125°C temperature range.

The CMT2-4-R is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

CMT2-4-R

Eaton - Electronics DivisionIn Stock: 797CMT2-4-R Datasheet

Current PartRFQ

PE-62915NL

Pulse ElectronicsIn Stock: 880PE-62915NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMT2-4-R is determined by the following critical parameters:

Core Functional Parameters:

• Number of Lines: 2 (must match)
• Inductance Value: 8 mH (must match)
• Mounting Type: Through Hole (must match)
• Package Configuration: Vertical, 4 PC Pin (must match)
• Operating Temperature Range: -40°C ~ 125°C (must match or exceed)

Performance Parameters:

• Current Rating (Max): Substitute must equal or exceed 2.8A
• DC Resistance (DCR): Substitute must not exceed 100 mOhm (Typ)

Application Context:

• Filter Type: Power Line (functional category)
• Moisture Sensitivity Level: 1 (Unlimited) (must match or be superior)

The PE-62915NL from Pulse Electronics qualifies as a substitute based on matching core functional parameters (2-line configuration, 8 mH inductance, through-hole mounting, vertical 4-pin package, and identical operating temperature range). The PE-62915NL exceeds the current rating requirement (3.2A vs. 2.8A) and maintains comparable DC resistance (120 mOhm vs. 100 mOhm Typ). The inductance measurement frequency differs (1 kHz vs. 10 kHz), but both values represent the same nominal inductance specification for this component category.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CMT2-4-R is obsolete, making the PE-62915NL the appropriate substitute for ongoing applications. The PE-62915NL maintains active product status with Pulse Electronics, ensuring continued availability and supply chain support.

Compliance and Certifications: Both components share identical ECCN classification (EAR99) and MSL rating (1 - Unlimited), confirming regulatory and environmental compatibility. The PE-62915NL includes RoHS Compliance and REACH Unaffected status, providing additional compliance documentation for modern manufacturing standards.

Performance Margin: The PE-62915NL provides performance margin above the CMT2-4-R specification: current rating is 14% higher (3.2A vs. 2.8A), supporting applications with increased current demands. DC resistance is 20% higher (120 mOhm vs. 100 mOhm Typ), which remains acceptable for power line filtering applications within this component category.

Physical Compatibility: Both components use identical through-hole mounting with vertical 4-pin configuration. The PE-62915NL is slightly more compact in width (20.32mm vs. 26.50mm) and height (38.35mm vs. 44.50mm), offering potential PCB layout advantages without compromising functional performance.

Frequently Asked Questions (FAQ)

Q: Can the PE-62915NL directly replace the CMT2-4-R in existing designs?

A: Yes. Both components share identical core specifications: 2-line configuration, 8 mH inductance, through-hole mounting, vertical 4-pin package, and -40°C to 125°C operating temperature. The PE-62915NL meets or exceeds all electrical performance requirements of the CMT2-4-R.

Q: What is the significance of the different inductance measurement frequencies (10 kHz vs. 1 kHz)?

A: Both measurements represent the same nominal 8 mH inductance value. The measurement frequency difference reflects manufacturer test methodology and does not indicate different component performance. For power line filtering applications, both specifications are functionally equivalent.

Q: Does the higher DC resistance of the PE-62915NL (120 mOhm vs. 100 mOhm) affect performance?

A: The 20 mOhm difference is within acceptable tolerance for power line common mode choke applications. The PE-62915NL's higher current rating (3.2A vs. 2.8A) provides design margin that compensates for the slightly elevated resistance specification.

Q: Are there physical installation considerations when switching from CMT2-4-R to PE-62915NL?

A: The PE-62915NL is more compact than the CMT2-4-R (smaller width and height). Both use identical through-hole mounting with vertical 4-pin configuration. PCB footprints are compatible; the smaller PE-62915NL may provide additional PCB layout flexibility.

Q: What compliance advantages does the PE-62915NL offer?

A: The PE-62915NL includes RoHS Compliance and REACH Unaffected certifications, supporting modern manufacturing and environmental standards. Both components share EAR99 ECCN classification and MSL 1 rating, confirming regulatory compatibility.

Q: Is the PE-62915NL suitable for high-current applications?

A: The PE-62915NL supports up to 3.2A continuous current, exceeding the CMT2-4-R specification of 2.8A. Applications requiring current levels between 2.8A and 3.2A benefit from the additional performance margin provided by the PE-62915NL.