RF EMI Absorber Sheet 12X12 (Laird Technologies EMI 21451222)

Part Overview

The Laird Technologies EMI part number 21451222 is an RF EMI absorber sheet with 12x12 inch dimensions, designed for electromagnetic interference suppression applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for production and maintenance requirements.

Substiute Parts

21451222

Laird Technologies EMIIn Stock: 106421451222 Datasheet

Current PartRFQ

21327167

Laird Technologies EMIIn Stock: 103721327167 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of part 21451222 is determined by the following critical parameters:

Dimensional Compatibility: The substitute part must maintain the 12x12 inch form factor to ensure mechanical fit within existing designs and assemblies.

Functional Classification: Both the main part and substitute must function as RF EMI absorber sheets, confirming electromagnetic absorption capability for the intended application frequency range.

Manufacturer Continuity: Laird Technologies EMI manufactures both the obsolete part and its active substitute, ensuring consistent material science, performance characteristics, and quality standards.

Regulatory Compliance: Both parts share identical ECCN (EAR99) classification and MSL status (Not Applicable), confirming equivalent export control and moisture handling requirements.

The identified substitute part 21451222 is replaced by active equivalent 21327167, which provides direct functional and dimensional substitution with enhanced specification documentation and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Part number 21327167 is the direct active equivalent for obsolete part 21451222.

Justification: Part 21327167 maintains identical dimensional specifications (12.000" x 12.000" square format) and functional classification as an RF EMI absorber sheet. The substitute part carries active product status, ensuring continued availability and supply chain support. Both parts share equivalent regulatory compliance (EAR99 ECCN classification, Not Applicable MSL status).

Compliance Status: Part 21327167 is ROHS3 compliant, providing enhanced environmental compliance compared to the obsolete part for which compliance documentation is not specified.

Packaging Consideration: Part 21327167 is supplied in bulk packaging, consistent with standard distribution for absorber sheet materials.

Frequently Asked Questions (FAQ)

Q: Can part 21327167 be used as a direct replacement for 21451222 in existing designs?

A: Yes. Both parts are 12x12 inch RF EMI absorber sheets manufactured by Laird Technologies EMI with identical dimensional specifications. The substitute part maintains functional equivalence for electromagnetic interference absorption applications.

Q: What is the material composition of the substitute part?

A: Part 21327167 is constructed from silicone rubber with pressure sensitive adhesive (PSA) backing, identified as ECCOSORB® SF series material.

Q: Are there temperature operating differences between the main part and substitute?

A: Part 21327167 specifies an operating temperature rating of 163°C. The main part 21451222 does not provide temperature specification documentation.

Q: What is the shelf life of the substitute part?

A: Part 21327167 has a 24-month shelf life from the date of shipment.

Q: Do both parts have identical regulatory classifications?

A: Both parts share EAR99 ECCN classification and Not Applicable MSL status. Part 21327167 additionally carries ROHS3 compliance certification.

Q: Is the packaging format different between the two parts?

A: Part 21451222 packaging is not specified. Part 21327167 is supplied in bulk packaging format.