CMF-0220 Equivalent & Substitute Parts

Part Overview

The CMF-0220 is a 22 mH Common Mode Choke (CMC) manufactured by Tamura, designed for two-line filtering applications in through-hole configurations. This component operates at 300mA maximum current with a DC resistance of 3.3Ohm and supports 250V AC voltage rating. The CMF-0220 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations where this topology is required.

Substiute Parts

CMF-0220

TamuraIn Stock: 1164CMF-0220 Datasheet

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SS11VL-05230

KEMETIn Stock: 1363SS11VL-05230 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMF-0220 are identified based on the following critical parameters that define functional equivalence:

Primary Matching Criteria:

• Number of Lines: 2 (common mode choke configuration)
• Mounting Type: Through Hole (mechanical compatibility)
• Package / Case: Vertical, 4 PC Pin (footprint and pin configuration)
• Inductance @ Frequency: 22-23 mH @ 1 kHz (within acceptable tolerance range)
• Voltage Rating - AC: 250V (electrical safety requirement)

Secondary Compatibility Parameters:

• Current Rating (Max): Equal to or greater than 300mA
• DC Resistance (DCR) (Max): Lower or equal values preferred for reduced power dissipation
• Physical dimensions: Compatible with PCB layout constraints

The SS11VL-05230 from KEMET meets all primary matching criteria and exceeds performance specifications in current rating and DCR characteristics.

Parameter Comparison

Engineering Selection Recommendations

SS11VL-05230 (KEMET) as Primary Substitute:

The SS11VL-05230 is the appropriate substitute for CMF-0220 applications based on the following engineering factors:

1. Product Status: The SS11VL-05230 maintains Active product status, ensuring long-term availability and supply chain continuity compared to the obsolete CMF-0220.

2. Electrical Performance: The substitute provides superior electrical characteristics with 500mA current rating (67% higher than CMF-0220) and 1.8Ohm DCR (45% lower than CMF-0220), resulting in reduced thermal dissipation and improved system efficiency.

3. Functional Equivalence: Inductance values of 22 mH and 23 mH @ 1 kHz represent a 4.5% variance, which is within acceptable tolerance for common mode choke applications. Both components maintain identical 250V AC voltage rating and 2-line configuration.

4. Mechanical Compatibility: Both components utilize through-hole mounting with vertical 4-pin package configuration. Dimensional differences (SS11VL-05230 is 22.00mm L x 14.50mm W x 19.50mm H versus CMF-0220 at 17.50mm L x 16.00mm W x 20.50mm H) require PCB layout verification but do not preclude substitution.

5. Compliance Status: The SS11VL-05230 carries ROHS3 Compliant and REACH Unaffected certifications, meeting modern regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can SS11VL-05230 directly replace CMF-0220 in existing designs?

A: Electrical substitution is valid based on matching inductance (22-23 mH @ 1 kHz), identical line configuration (2-line), matching voltage rating (250V AC), and superior current handling (500mA vs 300mA). Mechanical verification is required due to dimensional differences: SS11VL-05230 measures 22.00mm L x 14.50mm W x 19.50mm H compared to CMF-0220 at 17.50mm L x 16.00mm W x 20.50mm H. PCB layout must accommodate the larger length dimension.

Q: What is the significance of the DCR difference between these components?

A: The SS11VL-05230 exhibits 1.8Ohm DCR compared to CMF-0220's 3.3Ohm DCR. Lower DC resistance reduces I²R power dissipation in the component, resulting in lower operating temperature and improved thermal performance. This represents an engineering advantage in the substitute part.

Q: Are there any compliance or certification differences?

A: The CMF-0220 (obsolete) lacks specified compliance certifications in available documentation. The SS11VL-05230 (active) is ROHS3 Compliant and REACH Unaffected, meeting current regulatory standards for electronic component procurement in regulated industries.

Q: How does the current rating difference affect substitution?

A: The SS11VL-05230 supports 500mA maximum current versus CMF-0220's 300mA rating. This higher rating provides design margin and allows the substitute to handle transient current conditions without saturation. Applications operating at or below 300mA are fully compatible.

Q: What packaging considerations apply to this substitution?

A: Both components use through-hole vertical 4-pin packages with identical pin configuration. The primary consideration is PCB layout accommodation for the SS11VL-05230's larger footprint (22.00mm length vs 17.50mm). Existing through-hole pad patterns may require minor adjustment.

Q: Is the inductance variance of 4.5% acceptable for common mode filtering?

A: The 1 mH difference between 22 mH (CMF-0220) and 23 mH (SS11VL-05230) represents a 4.5% variance. For common mode choke applications, this variance is within typical component tolerance specifications and does not materially affect filtering performance in standard power line and signal integrity applications.