Würth Elektronik 7446424003 Common Mode Choke - Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7446424003 is a 3.3 mH, 2-line common mode choke designed for power line filtering applications. This through-hole component operates at 4A maximum current with 65mOhm DC resistance and is rated for 250V AC operation across the temperature range of -40°C to 125°C. The component is actively produced and ROHS3 compliant, making it suitable for modern electronic equipment requiring electromagnetic interference suppression in power distribution circuits.

Equivalent and substitute parts are identified when alternative components meet the functional requirements of the original specification while maintaining compatibility with the circuit design and mechanical constraints.

Substiute Parts

7446424003

Würth ElektronikIn Stock: 9447446424003 Datasheet

Current PartRFQ

C201368A-502NHF

ITG Electronics, Inc.In Stock: 974C201368A-502NHF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Würth Elektronik 7446424003 is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration for common mode filtering function
• Mounting Type: Must be through-hole to maintain PCB assembly compatibility
• Package Configuration: Must be vertical, 4-pin configuration for mechanical fit
• Current Rating: Must equal or exceed 4A maximum current requirement
• DC Resistance: Must not exceed 65mOhm to maintain acceptable power dissipation characteristics
• Voltage Rating - AC: Must be rated for minimum 250V AC operation
• Operating Temperature Range: Must support -40°C to 125°C operation
• RoHS Compliance: Must meet RoHS requirements for regulatory compliance

The ITG Electronics C201368A-502NHF meets these substitution criteria with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ITG Electronics C201368A-502NHF qualifies as a parametric equivalent to the Würth Elektronik 7446424003 based on the following engineering criteria:

Electrical Compatibility: The substitute part exceeds the current rating requirement (4.4A vs. 4A) and provides lower DC resistance (54mOhm vs. 65mOhm), resulting in reduced power dissipation. The higher inductance value (5 mH vs. 3.3 mH) provides enhanced filtering performance in the power line application.

Mechanical Compatibility: Both components share identical mounting type (through-hole), package configuration (vertical, 4-pin), and physical form factor suitable for direct PCB assembly replacement.

Regulatory Compliance: Both parts maintain RoHS compliance and are rated for identical voltage (250V AC) and temperature (-40°C to 125°C) operating ranges, ensuring compliance with applicable standards and environmental requirements.

Product Status: Both components are actively produced and available in stock quantities, supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the ITG Electronics C201368A-502NHF be used as a direct replacement for the Würth Elektronik 7446424003?

A: Yes. Both components share identical mounting type, package configuration, pin count, voltage rating, and operating temperature range. The substitute part meets or exceeds all critical electrical parameters required for the application.

Q: What is the significance of the higher inductance value in the substitute part?

A: The ITG Electronics part provides 5 mH inductance compared to 3.3 mH in the original. Higher inductance increases filtering effectiveness for common mode noise suppression in power line applications. This represents an improvement in the filtering function.

Q: Does the lower DC resistance of the substitute part affect circuit operation?

A: No. Lower DC resistance (54mOhm vs. 65mOhm) reduces power dissipation and heat generation, which is a beneficial characteristic. The substitute part maintains acceptable resistance within the design envelope.

Q: Are there packaging differences between these components?

A: Both components are supplied in through-hole vertical configuration with 4-pin packages. The Würth part is supplied in trays while the ITG part is supplied in bulk packaging. This does not affect electrical or mechanical compatibility.

Q: What compliance certifications apply to both parts?

A: Both components are RoHS compliant and REACH unaffected. The Würth part carries ROHS3 certification while the ITG part carries RoHS certification. Both meet regulatory requirements for modern electronic equipment.