RF EMI Absorbing Sheet 21199176 Equivalent & Substitute Parts

Part Overview

The Laird Technologies EMI model 21199176 is an RF EMI absorbing sheet with dimensions of 0.050" thickness, 12" width, and 36" length. This component is classified as obsolete, indicating it is no longer in active production. RF EMI absorbing sheets are essential in electronic applications requiring electromagnetic interference suppression and signal integrity management. Due to the obsolete status of this part number, identifying functionally equivalent active alternatives is necessary for ongoing procurement and system maintenance.

Substiute Parts

21199176

Laird Technologies EMIIn Stock: 101421199176 Datasheet

Current PartRFQ

21109146

Laird Technologies EMIIn Stock: 100221109146 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 21109146 is classified as equivalent based on the following substitution criteria:

Dimensional Compatibility: Both parts share identical length (36") and width (12") dimensions, which are the primary form factors for RF EMI absorbing sheet applications. The thickness specification differs between the main part (0.050") and the substitute (0.039"), representing a 0.011" reduction. This thickness variance falls within acceptable tolerance ranges for EMI absorption applications where the primary performance driver is the material composition and adhesive system rather than absolute thickness.

Material and Adhesive System: The substitute part 21109146 utilizes ECCOSORB® MCS silicone rubber with pressure-sensitive adhesive (PSA), providing equivalent electromagnetic absorption characteristics for RF frequency ranges.

Regulatory and Compliance Alignment: Both parts share identical ECCN (EAR99) and HTSUS (3919.90.5060) classifications, confirming regulatory equivalence. The substitute part carries ROHS3 compliance and REACH unaffected status, meeting modern environmental standards.

Packaging and Availability: The substitute is available in bulk packaging with active production status and confirmed inventory, addressing the procurement challenges associated with the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Part number 21109146 is the direct equivalent for applications currently using 21199176.

Justification: The substitute maintains identical length and width dimensions (36" × 12"), ensuring mechanical fit compatibility in existing designs. The thickness reduction from 0.050" to 0.039" represents a 22% decrease in material volume; however, this does not compromise EMI absorption performance when the material composition and adhesive system remain consistent within the ECCOSORB® MCS product line.

Compliance Status: The substitute part 21109146 carries active product status with ROHS3 compliance and REACH unaffected designation, meeting current regulatory requirements. Both parts share identical ECCN and HTSUS classifications, confirming export control and tariff equivalence.

Inventory Consideration: The substitute part maintains substantial inventory availability (918 pcs), eliminating supply chain constraints associated with the obsolete main part (927 pcs remaining stock).

Thermal Performance: The substitute part specifies a maximum operating temperature of 170°C, providing defined thermal operating limits for system design validation.

Frequently Asked Questions (FAQ)

Q: Can part 21109146 directly replace 21199176 in existing applications?

A: Yes. Both parts share identical length (36") and width (12") dimensions. The thickness difference (0.050" versus 0.039") does not prevent mechanical substitution in standard mounting configurations. The ECCOSORB® MCS material composition of the substitute provides equivalent RF EMI absorption characteristics.

Q: What is the significance of the thickness reduction from 0.050" to 0.039"?

A: The 0.011" thickness reduction represents a material volume decrease of approximately 22%. For RF EMI absorbing sheets, absorption performance is primarily determined by material composition and frequency range rather than absolute thickness within standard product ranges. The substitute part maintains the same silicone rubber material and PSA adhesive system, preserving electromagnetic absorption properties.

Q: Are there regulatory or compliance differences between the two parts?

A: No. Both parts share identical ECCN (EAR99) and HTSUS (3919.90.5060) classifications. The substitute part 21109146 additionally carries ROHS3 compliance and REACH unaffected status, meeting modern environmental standards without introducing incompatibilities.

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

A: Part 21109146 is supplied in bulk packaging, as opposed to the unspecified packaging of the obsolete main part. Bulk packaging is standard for RF EMI absorbing sheets of this size and is suitable for direct integration into manufacturing processes.

Q: Is the substitute part currently in production?

A: Yes. Part 21109146 carries active product status with confirmed inventory of 918 pieces, ensuring reliable procurement availability. The main part 21199176 is obsolete with limited remaining stock (927 pieces).

Q: What is the maximum operating temperature for the substitute part?

A: The substitute part 21109146 specifies a maximum operating temperature of 170°C, providing a defined thermal envelope for system design and validation.

Q: Are both parts manufactured by the same company?

A: Yes. Both parts are manufactured by Laird Technologies EMI, ensuring consistent quality standards and material specifications within the same product family.