Würth Elektronik 744844221 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744844221 is a 220 µH 2-line common mode choke designed for through-hole mounting in power line filtering applications. This component operates at 12A maximum current with 9mOhm DC resistance and maintains performance across the -40°C to 125°C operating temperature range. The part is Active status and RoHS3 compliant, making it suitable for current production designs. Substitute parts may be required due to inventory constraints, design revisions, or application-specific parameter adjustments.

Substiute Parts

744844221

Würth ElektronikIn Stock: 1087744844221 Datasheet

Current PartRFQ

7448261418

Würth ElektronikIn Stock: 11477448261418 Datasheet

Parametric EquivalentRFQ

C201367A-102NHF

ITG Electronics, Inc.In Stock: 830C201367A-102NHF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744844221 is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be Through Hole
• Package / Case: Must be Vertical, 4 PC Pin
• Voltage Rating - AC: Must be 250V or higher
• Operating Temperature Range: Must support -40°C ~ 125°C
• Filter Type: Must be Power Line
• RoHS Compliance: Must be RoHS Compliant or RoHS3 Compliant

The substitute parts listed below meet all mandatory parameters. Variations in inductance value, current rating, and DC resistance are permitted within the constraints of the application circuit design, provided the substitute part does not exceed the original part's current rating requirement or fall below the minimum inductance specification for the intended filtering function.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts meet the mandatory structural and compliance requirements for direct substitution in the 744844221 application:

7448261418 (Würth Elektronik WE-CMB Series): This part provides higher inductance (1.8 mH) and increased current capacity (14A) compared to the main part. It maintains RoHS3 compliance and identical operating temperature range. The slightly elevated DC resistance (9.5mOhm vs. 9mOhm) remains within acceptable power dissipation margins for most applications. This substitute is suitable when higher inductance filtering or increased current headroom is required.

C201367A-102NHF (ITG Electronics C201367A Series): This part offers intermediate inductance (1 mH) with improved DC resistance (8mOhm) and maintains the 12A current rating of the original part. RoHS compliance is confirmed. The lower DC resistance provides reduced thermal dissipation compared to both the main part and the first substitute. This substitute is suitable for applications where lower losses are prioritized.

All three parts are Active status products with confirmed inventory availability and identical AC voltage ratings and operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can 7448261418 be used as a direct replacement for 744844221?

A: Yes. Both parts share identical 2-line configuration, through-hole mounting, vertical 4-pin package, 250V AC rating, and -40°C to 125°C operating temperature. The higher inductance and current rating of 7448261418 do not prevent substitution; however, circuit performance may differ due to increased filtering characteristics.

Q: What is the primary difference between the two substitute parts?

A: 7448261418 provides 1.8 mH inductance with 14A capacity, while C201367A-102NHF provides 1 mH inductance with 12A capacity and lower DC resistance (8mOhm). Selection depends on whether higher inductance filtering or lower power dissipation is required for the application.

Q: Are there packaging differences between these parts?

A: All three parts use through-hole mounting with vertical 4-pin package configuration. Physical dimensions vary: 744844221 is 28.00mm L × 18.50mm W × 33.00mm H; 7448261418 is 43.00mm L × 24.60mm W × 43.00mm H; C201367A-102NHF is 31.50mm L × 24.60mm W × 30.00mm H. PCB layout space must accommodate the larger footprint of 7448261418.

Q: Do all parts meet RoHS requirements?

A: Yes. 744844221 and 7448261418 are RoHS3 compliant. C201367A-102NHF is RoHS compliant. Both certifications satisfy current regulatory requirements.

Q: What is the impact of DC resistance differences on circuit performance?

A: DC resistance affects power dissipation and thermal performance. C201367A-102NHF has the lowest DCR at 8mOhm, followed by 744844221 at 9mOhm, and 7448261418 at 9.5mOhm. In high-current applications, lower DCR reduces heat generation. Verify thermal requirements for your specific application.