Würth Elektronik 7447779222 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7447779222 is a 220 µH shielded drum core wirewound inductor rated for 440 mA continuous current with a maximum DC resistance of 1.17Ohm. This component is designed for surface mount applications requiring robust electromagnetic shielding and stable inductance performance across industrial temperature ranges. The part is actively manufactured and maintains AEC-Q200 qualification, making it suitable for automotive and high-reliability applications. Equivalent parts may be required due to supply chain constraints, regional availability, or specific design optimization needs while maintaining electrical and mechanical compatibility.

Substiute Parts

7447779222

Würth ElektronikIn Stock: 18537447779222 Datasheet

Current PartRFQ

P1167.224NLT

Pulse ElectronicsIn Stock: 4977P1167.224NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7447779222 is determined by the following critical parameters:

• Inductance Value: Must be 220 µH with ±20% tolerance
• Current Rating: Minimum 440 mA continuous current capability
• DC Resistance: Maximum 1.17Ohm to ensure equivalent power dissipation characteristics
• Shielding: Must be shielded to maintain electromagnetic isolation
• Mounting Type: Surface mount configuration required
• Package Compatibility: Nonstandard package with compatible footprint dimensions
• Environmental Compliance: ROHS3 compliance and MSL 1 rating required

The Pulse Electronics P1167.224NLT meets these substitution criteria with equivalent inductance, shielding, and compliance ratings. While the current rating (430 mA) is slightly lower than the primary part, it remains within acceptable operational parameters for applications not requiring the full 440 mA capacity.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active product status and ROHS3 compliance with unlimited moisture sensitivity ratings. The Würth Elektronik 7447779222 provides higher current capacity (440 mA) and lower DC resistance (1.17Ohm), making it the primary choice for applications requiring maximum current headroom. The Pulse Electronics P1167.224NLT offers equivalent inductance and shielding with superior DC resistance characteristics (930mOhm), providing lower power dissipation in applications operating below 430 mA. Both parts support the full industrial temperature range with extended upper temperature capability on the substitute part (130°C vs 125°C). PCB layout modifications may be required due to dimensional differences (7.30mm vs 7.54mm footprint).

Frequently Asked Questions (FAQ)

Q: Can the Pulse Electronics P1167.224NLT replace the Würth Elektronik 7447779222 in all applications?

A: Substitution is valid for applications where continuous current does not exceed 430 mA. Applications requiring the full 440 mA rating must use the primary part. Both parts maintain identical inductance values and shielding characteristics.

Q: What are the footprint differences between these parts?

A: The Würth part measures 7.30mm x 7.30mm while the Pulse part measures 7.54mm x 7.54mm. Both maintain 4.50mm maximum height. PCB layout verification is required before substitution to confirm pad spacing compatibility.

Q: Are there temperature range considerations for substitution?

A: The Pulse Electronics part supports operation to 130°C compared to 125°C for the Würth part. Both meet the -40°C lower limit. Applications operating near the upper temperature boundary should verify thermal performance with the substitute part's specifications.

Q: How do DC resistance values affect circuit performance?

A: The Pulse part's lower DC resistance (930mOhm vs 1.17Ohm) results in reduced power dissipation and heat generation. This may improve efficiency in current-limited applications but does not affect inductance or filtering characteristics.

Q: Are both parts suitable for automotive applications?

A: The Würth part carries AEC-Q200 qualification. The Pulse part does not list automotive ratings in the provided specifications. Automotive applications should verify compliance requirements before substitution.