CMT2-9-R Common Mode Choke Equivalent & Substitute Parts

Part Overview

The CMT2-9-R is a 2 mH common mode choke manufactured by Eaton - Electronics Division, designed for two-line power line filtering applications in through-hole configurations. This component features a maximum current rating of 5.45A and operates across the temperature range of -40°C to 125°C.

The CMT2-9-R is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component specification.

Substiute Parts

CMT2-9-R

Eaton - Electronics DivisionIn Stock: 1012CMT2-9-R Datasheet

Current PartRFQ

PE-62917NL

Pulse ElectronicsIn Stock: 1420PE-62917NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMT2-9-R are identified based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

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

Secondary Compatibility Parameters:

• Current Rating: Substitute must equal or exceed the original 5.45A requirement
• DC Resistance: Lower DCR values are acceptable as they indicate improved performance characteristics
• Frequency Specification: Inductance measured at different frequencies (10 kHz vs. 1 kHz) remains valid for the same inductance value

The PE-62917NL from Pulse Electronics satisfies all primary matching criteria and provides enhanced current handling capability (7.5A vs. 5.45A) with reduced DC resistance (20mOhm vs. 28mOhm).

Parameter Comparison

Engineering Selection Recommendations

The PE-62917NL is a direct functional substitute for the CMT2-9-R based on matching electrical specifications and physical form factor. The substitute part offers the following advantages:

Product Status: The PE-62917NL maintains active product status, ensuring ongoing availability and supply chain support, whereas the CMT2-9-R is obsolete.

Performance Characteristics: The PE-62917NL provides superior current handling capacity (7.5A vs. 5.45A) and reduced DC resistance (20mOhm vs. 28mOhm), resulting in lower power dissipation and improved thermal performance within the same operating temperature range.

Compliance: The PE-62917NL is RoHS Compliant and REACH Unaffected, meeting modern regulatory requirements. Both components share identical ECCN classification (EAR99) and MSL rating (1).

Physical Compatibility: Both components utilize identical mounting configurations (Through Hole, Vertical 4 PC Pin) and share compatible dimensional envelopes suitable for PCB integration.

Frequently Asked Questions (FAQ)

Q: Can the PE-62917NL directly replace the CMT2-9-R in existing designs?

A: Yes. The PE-62917NL meets all critical electrical and mechanical specifications required for the CMT2-9-R application. Both components feature 2 mH inductance, 2-line configuration, through-hole mounting, and identical operating temperature ranges. The substitute part provides enhanced current capacity and reduced resistance.

Q: What is the significance of the different frequency specifications (10 kHz vs. 1 kHz)?

A: Both components are specified with 2 mH inductance values. The frequency notation indicates the measurement condition used during component characterization. The inductance value remains constant and applicable across the operating frequency range of typical power line filtering applications.

Q: Are there dimensional differences between the CMT2-9-R and PE-62917NL?

A: Minor dimensional variations exist. The CMT2-9-R measures 1.437" L x 1.043" W x 1.752" H (36.50mm x 26.50mm x 44.50mm). The PE-62917NL measures 1.440" L x 0.800" W x 1.510" H (36.58mm x 20.32mm x 38.35mm). Both components utilize vertical 4-pin configurations and are compatible with standard through-hole PCB layouts.

Q: What is the advantage of the lower DC resistance in the PE-62917NL?

A: The PE-62917NL exhibits 20mOhm DC resistance compared to 28mOhm in the CMT2-9-R. Lower DC resistance reduces resistive power losses (I²R), resulting in decreased heat generation and improved efficiency in power line filtering circuits.

Q: Is the PE-62917NL suitable for applications requiring the full 5.45A current specification?

A: Yes. The PE-62917NL is rated for 7.5A maximum current, which exceeds the 5.45A requirement of the original CMT2-9-R specification. This provides additional design margin and thermal headroom.

Q: What packaging format is supplied for the PE-62917NL?

A: The PE-62917NL is supplied in Tray packaging, compared to the CMT2-9-R which uses standard packaging. Both components are available in new original condition with confirmed inventory levels.