FSRH070080RN000B Ferrite Core Equivalent & Substitute Parts

Part Overview

The FSRH070080RN000B is a solid free-hanging ferrite core manufactured by Murata Electronics, designed for electromagnetic interference (EMI) suppression applications. This component provides 59 ohm impedance at 100 MHz with an inner diameter of 4.00 mm, outer diameter of 7.00 mm, and length of 8.00 mm. The part is currently obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

FSRH070080RN000B

Murata ElectronicsIn Stock: 769FSRH070080RN000B Datasheet

Current PartRFQ

74270022

Würth ElektronikIn Stock: 622174270022 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of ferrite cores is determined by the following critical parameters:

• Impedance @ Frequency: Must match 59 Ohm @ 100 MHz
• Inner Diameter: Must accommodate 4.00 mm (0.157" Dia)
• Outer Diameter: Physical envelope constraint
• Length: Physical envelope constraint
• Type & Design: Round solid construction
• Mounting Type: Free hanging configuration
• Compliance: RoHS3 compliance maintained

The substitute part 74270022 from Würth Elektronik maintains the core electrical specification (59 Ohm @ 100 MHz) and inner diameter (4.00 mm), which are the primary functional requirements. Variations in outer diameter (6.00 mm vs 7.00 mm) and length (10.00 mm vs 8.00 mm) represent physical envelope differences that must be evaluated within the specific application context.

Parameter Comparison

Engineering Selection Recommendations

The FSRH070080RN000B is obsolete and no longer in active production. The 74270022 from Würth Elektronik is an active product that matches the critical electrical parameter (59 Ohm @ 100 MHz) and the inner diameter requirement (4.00 mm). Both components maintain ROHS3 compliance.

Physical envelope differences exist: the substitute has a smaller outer diameter (6.00 mm vs 7.00 mm) and greater length (10.00 mm vs 8.00 mm). These dimensional variations require verification against the specific mechanical constraints of the application, including available board space, cable routing, and mounting clearances.

The substitute part is recommended for new designs and ongoing procurement where the physical envelope accommodates the dimensional differences.

Frequently Asked Questions (FAQ)

Q: What determines if a ferrite core can substitute for the FSRH070080RN000B?

A: The primary electrical requirement is 59 Ohm impedance at 100 MHz. The inner diameter must be 4.00 mm to fit the intended application. The outer diameter and length are secondary parameters that depend on available physical space in the design.

Q: Can the 74270022 be used as a direct replacement?

A: The 74270022 matches the electrical specification and inner diameter. However, it has different outer diameter (6.00 mm vs 7.00 mm) and length (10.00 mm vs 8.00 mm). Compatibility depends on whether these dimensional differences fit within the mechanical constraints of your specific application.

Q: Are there compliance concerns with using the substitute?

A: Both the original part and the substitute are ROHS3 compliant. No compliance issues are introduced by this substitution.

Q: Why is the original part obsolete?

A: The FSRH070080RN000B is listed as obsolete by the manufacturer. The 74270022 from Würth Elektronik is an active product that provides equivalent electrical performance for the same application category.

Q: What should I verify before implementing this substitute?

A: Verify that the physical envelope of the substitute (6.00 mm OD, 10.00 mm length) fits within your application's mechanical constraints, including PCB layout, cable routing, and any mounting fixtures.