RF EMI Absorbing Sheet 21199218 Equivalent & Substitute Parts

Part Overview

The Laird Technologies EMI part number 21199218 is an RF EMI absorbing sheet with dimensions of 0.125" thickness, 12" width, and 24" length. This component is classified as Obsolete and is no longer in active production. RF EMI absorbing sheets are used to attenuate electromagnetic interference in RF applications through material absorption properties.

Due to the obsolete status of part 21199218, identification of equivalent substitute components is necessary to maintain system functionality and ensure continued availability for repair, maintenance, and new design implementations.

Substiute Parts

21199218

Laird Technologies EMIIn Stock: 71421199218 Datasheet

Current PartRFQ

21109154

Laird Technologies EMIIn Stock: 85221109154 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 accommodate the physical space and functional requirements of the application. The main part 21199218 specifies 0.125" thickness, 12" width, and 24" length.

Material Composition: The absorbing material type (silicone rubber, foam, or other elastomeric compounds) determines RF absorption characteristics and mechanical properties.

Product Status: Active substitute parts ensure ongoing availability and support, whereas obsolete parts present supply chain risk.

Compliance Certifications: RoHS status and ECCN classification affect regulatory compliance and export eligibility.

The substitute part 21199154 maintains dimensional equivalence in length (24.000") and width (12.008"), operates with an active product status, and is manufactured by the same supplier using established RF absorbing material technology.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Ongoing Production: Part 21109154 is the appropriate selection. This substitute maintains active product status with Laird Technologies EMI, ensuring long-term availability and technical support. The part is RoHS Compliant, satisfying environmental and regulatory requirements. The ECCN classification of EAR99 provides standard export eligibility compared to the obsolete classification of the original part.

Dimensional Compatibility: The substitute part 21109154 provides equivalent length (24.000") and width (12.008") dimensions, with negligible tolerance variation (0.008" on width). These dimensions are functionally equivalent for standard RF EMI absorption applications.

Material and Performance: The ECCOSORB® MCS silicone rubber composition in part 21109154 is a standard RF absorbing material from Laird Technologies EMI, providing established electromagnetic absorption performance in the RF frequency range.

Supply Chain Continuity: With 777 pieces currently in inventory and active product status, part 21109154 eliminates obsolescence risk associated with the original part 21199218.

Frequently Asked Questions (FAQ)

Q: Can part 21109154 directly replace part 21199218 in existing applications?

A: Part 21109154 maintains equivalent length and width dimensions (24" × 12") with the original part. The width tolerance of 0.008" is within standard mechanical tolerances for RF EMI absorbing sheet applications. Thickness specifications for the substitute part are not provided in the available data; verification of thickness compatibility with the application mechanical envelope is required before implementation.

Q: What is the significance of the ECCOSORB® MCS series designation?

A: ECCOSORB® MCS is a Laird Technologies EMI product series designation for silicone rubber-based RF absorbing materials. This series is established for RF EMI absorption applications and represents a standard material platform from the manufacturer.

Q: Why is part 21199218 classified as obsolete?

A: Obsolete classification indicates that the manufacturer has discontinued production and support for this part number. Laird Technologies EMI has transitioned to active product lines such as the ECCOSORB® MCS series (part 21109154) for equivalent RF EMI absorption functionality.

Q: Are there compliance differences between the two parts?

A: Part 21109154 carries RoHS Compliant certification and EAR99 ECCN classification, both of which are current regulatory standards. The original part 21199218 does not have specified compliance data due to its obsolete status. For applications requiring RoHS compliance, part 21109154 is the appropriate selection.

Q: What inventory considerations apply to these parts?

A: Part 21199218 has 686 pieces in current inventory as new original stock. Part 21109154 has 777 pieces available. However, the obsolete status of 21199218 means no future production or replenishment is available. Part 21109154, with active product status, ensures continued availability for future requirements.

Q: Are there dimensional tolerance considerations for substitution?

A: The width dimension shows a 0.008" difference (12" versus 12.008"), which falls within standard mechanical tolerances for RF absorbing sheet applications. Length dimensions are equivalent at 24". Thickness data for the substitute part is not provided; applications with strict thickness requirements should confirm compatibility before selection.