Equivalent & Substitute Parts for Würth Elektronik 74279241

Part Overview

The Würth Elektronik 74279241 is a single-line ferrite bead designed for signal line filtering applications. This component operates at 80 Ohms impedance at 100 MHz and is housed in a 1806 (4516 Metric) surface mount package. The part is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

74279241

Würth ElektronikIn Stock: 97974279241 Datasheet

Current PartRFQ

742792411

Würth ElektronikIn Stock: 4308742792411 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete Würth Elektronik 74279241 is based on the following critical parameters that must remain constant across equivalent components:

Mandatory Matching Parameters:

• Impedance specification: 80 Ohms @ 100 MHz
• Filter type: Signal Line
• Number of lines: 1
• Package / Case: 1806 (4516 Metric)
• Operating temperature range: -55°C ~ 125°C
• Mounting type: Surface Mount
• RoHS compliance: ROHS3 Compliant

Allowable Parameter Variations:

• Current rating may be lower than the original specification
• DC resistance (DCR) may be lower than the original specification
• Product status transition from obsolete to active

The substitute part 742792411 maintains all mandatory matching parameters while operating within reduced current and DCR specifications, making it functionally equivalent for applications within its current rating envelope.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 742792411 is the manufacturer-recommended equivalent for the obsolete 74279241. Both components are manufactured by Würth Elektronik within the WE-CBF series and maintain identical electrical and mechanical specifications for impedance, frequency response, package dimensions, and operating temperature range.

The substitute part carries active product status, ensuring long-term availability and supply chain continuity. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing standards.

The primary design consideration for substitution is the reduced current rating of the substitute part (3A versus 5A) and improved DC resistance (40mOhm versus 300mOhm). Applications operating at or below 3A current levels experience no functional limitation. Applications requiring current capacity above 3A require alternative component selection outside this substitution group.

Frequently Asked Questions (FAQ)

Q: Can the 742792411 be used as a direct replacement for the 74279241 in all applications?

A: The 742792411 is a direct replacement for applications operating at or below 3A. Applications requiring current capacity above 3A require alternative component selection.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components use the 1806 (4516 Metric) package with identical length (0.177" / 4.50mm), width (0.063" / 1.60mm), and height (0.071" / 1.80mm) specifications. PCB layout and assembly processes require no modification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the improved DC resistance in the substitute part?

A: The substitute part exhibits lower DC resistance (40mOhm versus 300mOhm), resulting in reduced insertion loss and improved signal integrity at the expense of reduced current capacity.

Q: Is the operating temperature range identical?

A: Yes. Both components operate across the identical temperature range of -55°C to 125°C.

Q: What packaging format is available for the substitute part?

A: The 742792411 is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.