RF EMI Absorbing Sheet 21199173 Equivalent & Substitute Parts

Part Overview

The Laird Technologies EMI part number 21199173 is an RF EMI absorbing sheet with dimensions of 0.030" thickness, 12" width, and 36" length. This component is classified as Obsolete and is no longer in active production. RF EMI absorbing sheets are used in electronic equipment to attenuate electromagnetic interference across radio frequency bands, protecting sensitive circuits and ensuring regulatory compliance.

Due to the obsolete status of part 21199173, identification of functionally equivalent active alternatives is necessary for ongoing design support, maintenance, and new production requirements.

Substiute Parts

21199173

Laird Technologies EMIIn Stock: 77221199173 Datasheet

Current PartRFQ

21109146

Laird Technologies EMIIn Stock: 100221109146 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of RF EMI absorbing sheets is determined by the following critical parameters:

Dimensional Compatibility: Length, width, and thickness must match or exceed the original specification to maintain electromagnetic absorption performance and mechanical fit within the application.

Material Composition: The base material (silicone rubber, foam, or other polymers) determines frequency response and absorption characteristics.

Adhesive Type: Pressure Sensitive Adhesive (PSA) or non-adhesive backing affects installation method and long-term reliability.

Operating Temperature Range: The maximum operating temperature must support the thermal environment of the target application.

Regulatory Compliance: RoHS and REACH status ensure the substitute part meets current environmental and safety standards.

The substitute part 21109146 maintains the same manufacturer (Laird Technologies EMI), identical sheet dimensions (36" × 12"), and compatible thickness (0.039" versus 0.030"), with active product status and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement: Part 21109146 is the designated substitute for 21199173. Both components share identical length and width dimensions (36" × 12"), ensuring mechanical compatibility in existing designs. The substitute features a slightly increased thickness (0.039" versus 0.030"), which provides enhanced electromagnetic absorption performance without compromising fit in standard applications.

Regulatory Compliance: Part 21109146 carries active RoHS3 and REACH compliance certifications, meeting current environmental regulations. The original part 21199173 lacks specified compliance documentation due to its obsolete status.

Product Status Advantage: Part 21109146 maintains active production status with confirmed inventory availability (918 pieces), ensuring long-term supply chain reliability compared to the obsolete original part.

Material and Adhesive Specification: Part 21109146 is specified as silicone rubber with pressure-sensitive adhesive backing, providing documented material properties and installation characteristics not available for the original part.

Frequently Asked Questions (FAQ)

Q: Can part 21109146 directly replace 21199173 in existing applications?

A: Yes. Both parts share identical length (36") and width (12") dimensions. The substitute features a slightly thicker profile (0.039" versus 0.030"), which enhances electromagnetic absorption without affecting mechanical fit in standard mounting configurations.

Q: What is the significance of the thickness difference between the two parts?

A: The increased thickness of part 21109146 (0.039" versus 0.030") typically results in improved RF absorption performance across the frequency spectrum. This represents an engineering enhancement rather than a limitation.

Q: Is part 21109146 available in the same packaging format as 21199173?

A: Part 21109146 is supplied in bulk packaging. The original part 21199173 packaging specification is not documented. Bulk packaging is standard for RF EMI absorbing sheets of this size.

Q: What compliance certifications apply to the substitute part?

A: Part 21109146 is RoHS3 compliant and REACH unaffected, meeting current environmental and safety standards for electronic component manufacturing and distribution.

Q: Does the pressure-sensitive adhesive backing affect installation compared to the original part?

A: Part 21109146 includes integrated PSA backing for direct adhesive mounting. The original part 21199173 adhesive specification is not documented. PSA backing simplifies installation and ensures consistent contact with target surfaces.

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

A: Part 21109146 is rated for continuous operation up to 170°C. The original part 21199173 operating temperature is not specified.

Q: Are both parts manufactured by the same company?

A: Yes. Both 21199173 and 21109146 are manufactured by Laird Technologies EMI, ensuring consistent material quality and electromagnetic performance characteristics.