CMF-6100 Equivalent & Substitute Parts

Part Overview

The CMF-6100 is a 2-line common mode choke manufactured by Tamura, rated at 10 mH inductance at 1 kHz with a maximum current rating of 900mA and DC resistance of 520mOhm. This component is designed for electromagnetic interference (EMI) suppression in power line applications. The CMF-6100 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support, maintenance, and new production requirements where inventory is unavailable.

Substiute Parts

CMF-6100

TamuraIn Stock: 1019CMF-6100 Datasheet

Current PartRFQ

7412-RC

Bourns Inc.In Stock: 11237412-RC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMF-6100 are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 10 mH @ 1 kHz (exact match required)
• Number of lines: 2-line configuration (exact match required)
• AC voltage rating: 250V (minimum requirement)
• Package configuration: Vertical, 4 PC Pin (exact match required)
• Moisture sensitivity level: MSL 1 (Unlimited)

Secondary Compatibility Criteria:

• Current rating: Substitute must support minimum 800mA (CMF-6100 rated at 900mA)
• DC resistance: Substitute DCR must not exceed 520mOhm significantly
• Pin configuration: 4-pin vertical mounting

The Bourns 7412-RC meets these substitution criteria with matching inductance, line count, voltage rating, and package type. While the current rating is reduced to 800mA and DCR is 500mOhm, these parameters remain within acceptable tolerance for equivalent operation in applications not requiring the full 900mA capacity.

Parameter Comparison

Engineering Selection Recommendations

CMF-6100 (Tamura) - Obsolete Status: The CMF-6100 is classified as obsolete. While 915 pieces are currently in stock, this component is no longer in active production. For new designs or long-term production planning, substitute parts should be evaluated.

7412-RC (Bourns Inc.) - Recommended Substitute: The Bourns 7412-RC is an active product with equivalent electrical specifications. This component is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The 7412-RC is available in bulk packaging with 1023 pieces in stock. The primary design consideration is the reduced current rating of 800mA compared to the CMF-6100's 900mA rating. Applications operating below 800mA continuous current can use the 7412-RC as a direct substitute without circuit modification.

Compliance and Certification: Both components carry ECCN EAR99 classification. The 7412-RC provides superior compliance documentation with explicit RoHS3 and REACH status confirmation.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 7412-RC replace the Tamura CMF-6100 in all applications?

A: The 7412-RC is functionally equivalent for applications where the circuit current does not exceed 800mA. If your application requires the full 900mA capacity of the CMF-6100, the 7412-RC is not suitable without circuit redesign or component derating analysis.

Q: What is the difference in physical dimensions between these parts?

A: The CMF-6100 measures 0.886" L x 0.709" W x 1.102" H (22.50mm x 18.00mm x 28.00mm). The 7412-RC measures 0.748" L x 0.669" W x 0.827" H (19.00mm x 17.00mm x 21.00mm). Both use vertical 4-pin configurations and are mechanically compatible with standard through-hole PCB layouts, though the 7412-RC is physically smaller.

Q: Are there any regulatory or compliance differences?

A: The 7412-RC provides explicit RoHS3 compliance and REACH unaffected status. The CMF-6100, being obsolete, does not have updated compliance documentation. For applications requiring current regulatory compliance, the 7412-RC is the preferred choice.

Q: What is the DC resistance difference, and does it matter?

A: The CMF-6100 has 520mOhm maximum DCR, while the 7412-RC has 500mOhm maximum DCR. This 20mOhm difference is negligible for most power line filtering applications and represents improved performance in the substitute part.

Q: Can I use the 7412-RC in a vertical mounting orientation?

A: Yes. The 7412-RC is specified as a through-hole vertical mount component with a 4-pin configuration, identical to the CMF-6100 package type. PCB layout compatibility is maintained.

Q: What should I do if my application requires the full 900mA rating?

A: If 900mA capacity is mandatory, the 7412-RC cannot be used as a direct substitute. Alternative 2-line common mode chokes with 900mA or higher ratings from other manufacturers should be evaluated using the same parameter matching criteria: 10 mH @ 1 kHz inductance, 250V AC rating, and vertical 4-pin package configuration.