74279246 Equivalent & Substitute Parts Reference

Part Overview

The 74279246 is an SMT EMI suppression ferrite bead manufactured by Würth Elektronik, designated as part of the WE-CBF series. This component functions as a signal line ferrite bead designed for electromagnetic interference suppression in electronic circuits. The part is classified as Active product status, indicating current production and availability. Equivalent and substitute parts are identified when identical or functionally compatible components become necessary due to supply constraints, design optimization, or application-specific requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

74279246

Würth ElektronikIn Stock: 258874279246 Datasheet

Current PartRFQ

782963201

Würth ElektronikIn Stock: 5583782963201 Datasheet

Parametric EquivalentRFQ

BLM41PG102SH1L

Murata ElectronicsIn Stock: 10448BLM41PG102SH1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74279246 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Impedance @ Frequency: 1 kOhms @ 100 MHz
• Current Rating (Max): 1.5A
• DC Resistance (DCR) (Max): 90mOhm
• Package / Case: 1806 (4516 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 125°C
• Number of Lines: 1
• AEC-Q200 Automotive Rating
• RoHS3 Compliance
• MSL Level 1

The identified substitute parts meet all mandatory parameters. Variations in filter type classification (Signal Line versus Power Line) and series designation do not affect electrical or mechanical compatibility when all core parameters remain identical.

Parameter Comparison

Engineering Selection Recommendations

All three components—74279246, 782963201, and BLM41PG102SH1L—are electrically and mechanically equivalent for direct substitution applications. Selection among these parts is based on the following engineering criteria:

Compliance & Certification: All parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, REACH unaffected status, and EAR99 export classification. No compliance advantage exists among the three options.

Product Status: All parts carry Active product status, confirming current manufacturing and supply availability.

Manufacturer Considerations: The 74279246 and 782963201 are both Würth Elektronik products from different series (WE-CBF and WE-CBA respectively). The BLM41PG102SH1L is a Murata Electronics EMIFIL® series component. Selection may be influenced by existing supply chain relationships, inventory availability, or design documentation requirements.

Packaging Format: The 74279246 and 782963201 are supplied in Tape & Reel (TR) format. The BLM41PG102SH1L is available in Cut Tape (CT) & Digi-Reel® format. Packaging selection depends on production volume and assembly equipment compatibility.

Inventory Availability: Current stock levels are 2510 pcs (74279246), 5482 pcs (782963201), and 10400 pcs (BLM41PG102SH1L). Availability may influence procurement decisions for time-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the 782963201 directly replace the 74279246 in existing designs?

A: Yes. Both components share identical electrical parameters (1 kOhms @ 100 MHz impedance, 1.5A current rating, 90mOhm DCR), package dimensions (1806/4516 Metric), and operating temperature range (-55°C ~ 125°C). The difference in filter type classification (Signal Line versus Power Line) does not affect compatibility when all core electrical and mechanical specifications match.

Q: What is the difference between the Würth Elektronik WE-CBF and WE-CBA series?

A: The WE-CBF series is designated for signal line applications, while the WE-CBA series is designated for power line applications. However, both series share identical electrical performance characteristics (impedance, current rating, DCR) and physical dimensions. Series designation reflects intended application context rather than electrical incompatibility.

Q: Is the Murata BLM41PG102SH1L compatible with PCB designs specified for the 74279246?

A: Yes. The BLM41PG102SH1L meets all electrical and mechanical requirements. The component footprint, package dimensions, and electrical performance are identical. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and manufacturer origin. PCB layout and assembly processes require no modification.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching impedance at specified frequency (1 kOhms @ 100 MHz), maximum current rating (1.5A), maximum DC resistance (90mOhm), package type (1806/4516 Metric), mounting method (Surface Mount), operating temperature range (-55°C ~ 125°C), and compliance certifications (AEC-Q200, ROHS3, REACH status).

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats are packaging and delivery methods only. They do not affect component electrical characteristics or performance. Selection is based on production volume, assembly equipment, and supply chain requirements.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three components carry AEC-Q200 automotive qualification, confirming suitability for automotive-grade applications across the specified operating temperature range (-55°C ~ 125°C).

Q: What is the significance of MSL Level 1 classification?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture control requirements. All three parts carry this classification, eliminating moisture-related storage or handling constraints.