CMT-03305 Equivalent & Substitute Parts

Part Overview

The CMT-03305 is a 5 mH Common Mode Choke (CMC) rated for 3A maximum current with 150 mOhm DC resistance, manufactured by Tamura. This through-hole component features a 2-line configuration and is designed for electromagnetic interference (EMI) filtering applications. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

CMT-03305

TamuraIn Stock: 1102CMT-03305 Datasheet

Current PartRFQ

PFC2225BNP-502

Sumida America Components Inc.In Stock: 781PFC2225BNP-502 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMT-03305 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 5 mH @ 1 kHz (exact match required)
• Number of lines: 2-line configuration (exact match required)
• Current rating: 3A minimum (equal or higher acceptable)
• Mounting type: Through Hole (exact match required)
• Package configuration: Vertical, No Base, 4 PC Pin (exact match required)

Secondary Compatibility Factors:

• DC resistance: Lower DCR values are acceptable (improved performance)
• AC voltage rating: Equal or higher ratings acceptable
• MSL rating: Equal or lower MSL values acceptable

The PFC2225BNP-502 manufactured by Sumida America Components Inc. meets all primary matching criteria and demonstrates improved electrical characteristics in DC resistance performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: PFC2225BNP-502

The PFC2225BNP-502 is the direct functional equivalent for the obsolete CMT-03305. This substitute satisfies all electrical and mechanical requirements:

• Electrical specifications are identical for inductance, current rating, and line configuration
• DC resistance is improved (81 mOhm versus 150 mOhm), resulting in lower power dissipation
• Through-hole mounting and 4-pin vertical package configuration are identical
• MSL rating matches (Level 1, Unlimited)
• Product status is Active, ensuring ongoing availability and supply chain continuity
• RoHS3 compliance is documented for the substitute part

Physical Dimensions Note:

The PFC2225BNP-502 has a smaller footprint (25.00mm L x 20.00mm W x 27.00mm H) compared to the CMT-03305 (32.00mm L x 22.00mm W x 32.00mm H). PCB layout verification is required to confirm fit within existing design constraints.

Frequently Asked Questions (FAQ)

Q: Can the PFC2225BNP-502 be used as a direct replacement for the CMT-03305?

A: Yes. Both components share identical inductance (5 mH @ 1 kHz), current rating (3A), line configuration (2-line), mounting type (through-hole), and package style (vertical, no base, 4 PC pin). The substitute offers improved DC resistance characteristics.

Q: What is the significance of the lower DC resistance in the PFC2225BNP-502?

A: The PFC2225BNP-502 has 81 mOhm DCR compared to 150 mOhm in the CMT-03305. Lower DC resistance reduces resistive losses and heat generation during operation, improving overall circuit efficiency.

Q: Are there physical dimension differences between these parts?

A: Yes. The PFC2225BNP-502 is smaller: 25.00mm L x 20.00mm W x 27.00mm H versus the CMT-03305 at 32.00mm L x 22.00mm W x 32.00mm H. PCB layout must be reviewed to confirm the smaller footprint is compatible with existing board designs.

Q: Is the PFC2225BNP-502 RoHS compliant?

A: Yes. The PFC2225BNP-502 is RoHS3 compliant. The CMT-03305 compliance status is not specified in available documentation.

Q: What is the operating temperature range for the PFC2225BNP-502?

A: The operating temperature range is -40°C to 85°C. The CMT-03305 operating temperature is not specified in available documentation.

Q: Are both parts available in the same packaging format?

A: Both parts are supplied in through-hole vertical configuration with 4 PC pins. The CMT-03305 is available in bulk packaging (1029 pcs in stock), while the PFC2225BNP-502 is also available in bulk (709 pcs in stock).