Equivalent & Substitute Parts for Würth Elektronik 32403 RF Ferrite Sheet

Part Overview

The Würth Elektronik 32403 is a flexible RF EMI ferrite sheet designed for electromagnetic interference suppression applications. Constructed from rubber-bonded ferrite powder with non-conductive adhesive on a single side, this component provides EMI attenuation in a rectangular format measuring 11.693" × 8.268" × 0.016".

The 32403 has been discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing procurement and design requirements. The primary substitute maintains the same footprint and material composition while offering variations in thickness and current product availability.

Substiute Parts

32403

Würth ElektronikIn Stock: 91332403 Datasheet

Current PartRFQ

32403S

Würth ElektronikIn Stock: 72132403S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Würth Elektronik 32403 is determined by the following critical parameters:

• Dimensional Compatibility: Length (11.693" / 297.00mm) and width (8.268" / 210.00mm) must remain constant
• Material Composition: Rubber-bonded ferrite powder construction required
• Adhesive Configuration: Non-conductive, single-sided adhesive mandatory
• Operating Temperature Range: -20°C ~ 90°C minimum requirement
• Regulatory Compliance: ROHS3 and REACH Unaffected status required

The substitute part 32403S meets all critical substitution criteria. The thickness variation (0.013" vs. 0.016") represents a design tolerance within the WE-FAS series and does not affect functional substitutability for standard EMI suppression applications.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 32403S serves as the direct substitute for the discontinued 32403 model. Both components are manufactured by Würth Elektronik within the WE-FAS series and maintain identical dimensional specifications for length and width, ensuring mechanical compatibility in existing designs.

The 32403S is currently in active production status with confirmed inventory availability, eliminating supply chain risk associated with the discontinued 32403. Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for equivalent applications.

The thickness reduction from 0.016" to 0.013" represents a design variation within the WE-FAS product family and does not compromise the functional equivalence of the ferrite sheet for EMI suppression purposes.

Frequently Asked Questions (FAQ)

Q: Can the 32403S directly replace the 32403 in existing designs?

A: Yes. The 32403S maintains identical length (11.693" / 297.00mm) and width (8.268" / 210.00mm) dimensions, material composition (rubber-bonded ferrite powder), and adhesive configuration (non-conductive, single-sided). The thickness difference (0.013" vs. 0.016") is a design tolerance within the WE-FAS series.

Q: What is the significance of the thickness variation between these parts?

A: The 32403S features a reduced thickness of 0.013" compared to the 32403 at 0.016". Both thicknesses are standard within the WE-FAS flexible ferrite sheet product line and are functionally equivalent for EMI suppression applications.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the 32403 and 32403S are ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements for electronic component procurement.

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

A: The 32403S is supplied in bag packaging, suitable for standard component handling and storage procedures.

Q: Why is the 32403 discontinued?

A: The 32403 has been discontinued at DiGi Electronics. The 32403S remains in active production as the current equivalent offering within the WE-FAS series.