CMF-6033 Equivalent & Substitute Parts Reference

Part Overview

The CMF-6033 is a 3.3 mH Common Mode Choke (CMC) manufactured by Tamura, designed for 2-line filtering applications with a maximum current rating of 2A and DC resistance of 300mOhm. This component is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Common Mode Chokes in this specification range are used in power line filtering and EMI suppression circuits where component availability from the original manufacturer is no longer guaranteed.

Substiute Parts

CMF-6033

TamuraIn Stock: 1054CMF-6033 Datasheet

Current PartRFQ

ET2432-024

Triad MagneticsIn Stock: 777ET2432-024 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMF-6033 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value within acceptable tolerance: 3.3 mH nominal (3.2 mH represents a 3.0% deviation, which is within typical component tolerance ranges for common mode chokes)
• Number of lines: 2-line configuration required
• Current rating: Minimum 2A continuous
• Voltage rating: Minimum 250V AC
• Package configuration: Vertical, 4-pin through-hole mounting

Secondary Compatibility Factors:

• DC resistance should not exceed the original specification to maintain circuit performance
• Physical dimensions must accommodate existing PCB layouts
• Moisture sensitivity and environmental ratings must meet application requirements

The ET2432-024 from Triad Magnetics satisfies all primary matching criteria and represents a direct functional equivalent for the obsolete CMF-6033.

Parameter Comparison

Engineering Selection Recommendations

The ET2432-024 from Triad Magnetics is the qualified substitute for the obsolete CMF-6033. Selection of this alternative is supported by the following engineering factors:

Electrical Compatibility: The ET2432-024 maintains the critical electrical parameters required for common mode choke operation: 2-line configuration, 2A current rating, and 250V AC voltage rating. The inductance variance of 3.0% (3.2 mH vs. 3.3 mH) is within standard component tolerances for ferrite-core common mode chokes. The ET2432-024 provides superior DC resistance performance at 200mOhm compared to the original 300mOhm specification, resulting in lower insertion loss and improved thermal characteristics.

Regulatory and Compliance Status: The ET2432-024 carries active certifications from CSA, IEC, and UL, providing documented compliance for power line filtering applications. The component is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The CMF-6033, as an obsolete component, no longer receives manufacturer support or updated compliance documentation.

Physical Integration Considerations: The ET2432-024 uses identical 4-pin vertical through-hole packaging, ensuring mechanical compatibility with existing PCB designs. However, dimensional differences exist: the ET2432-024 measures 0.767" L x 1.040" W (19.48mm x 26.42mm) with a maximum height of 1.220" (31.00mm), compared to the CMF-6033 at 0.886" L x 0.709" W (22.50mm x 18.00mm) with 1.102" (28.00mm) height. PCB layout verification is required to confirm adequate clearance and component spacing before implementation.

Procurement and Availability: The ET2432-024 is actively manufactured and maintained in inventory (751 pieces in stock), ensuring reliable long-term availability. The CMF-6033, classified as obsolete, presents ongoing procurement risk and potential supply discontinuation.

Frequently Asked Questions (FAQ)

Q: Can the ET2432-024 be used as a direct drop-in replacement for the CMF-6033?

A: The ET2432-024 is electrically compatible and uses identical 4-pin vertical through-hole packaging. However, physical dimensions differ. The ET2432-024 is slightly smaller in length (0.767" vs. 0.886") but wider (1.040" vs. 0.709") and taller (1.220" vs. 1.102"). PCB layout verification is required to confirm adequate component spacing and clearance before implementation.

Q: What is the significance of the 3.0% inductance variance between 3.3 mH and 3.2 mH?

A: Common mode chokes typically operate within ±10% inductance tolerance as standard practice. The 3.0% variance between the CMF-6033 (3.3 mH) and ET2432-024 (3.2 mH) is well within acceptable limits for power line filtering applications and will not degrade circuit performance.

Q: Why does the ET2432-024 have lower DC resistance (200mOhm vs. 300mOhm)?

A: Lower DC resistance indicates improved winding efficiency and reduced power dissipation. The ET2432-024's 200mOhm DCR is superior to the original specification and will result in lower insertion loss and improved thermal performance in the application circuit.

Q: Are there any compliance differences between the two components?

A: The CMF-6033 has no documented compliance certifications in the provided specifications. The ET2432-024 carries active certifications from CSA, IEC, and UL, is ROHS3 compliant, and is REACH unaffected. For applications requiring documented regulatory compliance, the ET2432-024 provides superior certification coverage.

Q: What is the operating temperature range for the ET2432-024?

A: The ET2432-024 is rated for -20°C to 105°C continuous operation. The CMF-6033 operating temperature range is not specified in available documentation. Verify that the ET2432-024 temperature range meets your application requirements.

Q: Is the ET2432-024 available in the same packaging format?

A: Yes. Both components use vertical, 4-pin through-hole packaging. The ET2432-024 is supplied in bulk packaging, whereas the CMF-6033 packaging format is not specified. Confirm packaging requirements for your procurement process.

Q: What is the moisture sensitivity level of the ET2432-024?

A: The ET2432-024 is classified as Not Applicable for moisture sensitivity level, indicating it does not require special moisture control during storage or handling. The CMF-6033 is rated MSL 1 (Unlimited), also indicating minimal moisture sensitivity. Both components are suitable for standard storage conditions.