RF EMI Absorber Sheet 21451226 Equivalent & Substitute Parts

Part Overview

The Laird Technologies EMI part number 21451226 is an RF EMI absorber sheet with dimensions of 0.015" thickness, 12" width, and 36" length. This component is classified as obsolete and is no longer in active production. RF EMI absorber sheets are used in electronic applications to attenuate electromagnetic interference across radio frequency bands through material absorption properties.

Due to the obsolete status of part 21451226, identification of functionally equivalent active production alternatives is necessary to maintain design continuity and ensure ongoing component availability for new builds and field replacements.

Substiute Parts

21451226

Laird Technologies EMIIn Stock: 90321451226 Datasheet

Current PartRFQ

21109160

Laird Technologies EMIIn Stock: 84721109160 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of RF EMI absorber sheets is determined by dimensional compatibility and functional equivalence. The primary substitution candidate for part 21451226 is part number 21109160, also manufactured by Laird Technologies EMI.

The substitution logic is based on the following criteria:

• Dimensional Compatibility: Both parts share identical length (36 inches / 914 mm) and width (12 inches / 305 mm) dimensions, enabling direct physical fit in applications designed for the original part.
• Product Category: Both components function as RF EMI absorbing sheets within the ECCOSORB® product family.
• Manufacturer Consistency: Both parts are manufactured by Laird Technologies EMI, ensuring material science and quality standards alignment.
• Active Production Status: Part 21109160 maintains active product status, providing long-term availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

Part 21109160 is the designated equivalent substitute for obsolete part 21451226 based on the following engineering criteria:

• Dimensional Alignment: Identical length and width dimensions (36" × 12") ensure mechanical fit compatibility in existing designs and assemblies.
• Active Production Status: Part 21109160 maintains active product status with Laird Technologies EMI, providing assured long-term availability and supply chain continuity.
• Regulatory Compliance: Part 21109160 carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.
• Manufacturer Consistency: Both parts originate from Laird Technologies EMI, ensuring material formulation and performance characteristics remain within the same product family standards.

Note on Thickness Variation: Part 21109160 specifies a thickness of 0.039 inches (1.00 mm), compared to the original part's 0.015 inches. This thickness difference must be evaluated within the context of the specific application's mechanical and electromagnetic performance requirements.

Frequently Asked Questions (FAQ)

Q: Can part 21109160 be used as a direct replacement for part 21451226?

A: Part 21109160 shares identical length and width dimensions with part 21451226, enabling physical installation in applications designed for the original component. However, the thickness difference (0.039" versus 0.015") must be verified for compatibility with the specific application's mechanical constraints and electromagnetic absorption requirements.

Q: What is the primary difference between these two parts?

A: The primary difference is thickness. Part 21451226 is 0.015 inches thick, while part 21109160 is 0.039 inches thick. Both maintain the same 36" × 12" footprint. Part 21109160 also provides documented material composition (Silicone Rubber), adhesive type (PSA), and operating temperature rating (170°C), which are not specified for the obsolete part.

Q: Why is part 21451226 listed as obsolete?

A: Part 21451226 has been discontinued by Laird Technologies EMI and is no longer in active production. Part 21109160 represents the active production alternative within the ECCOSORB® MCS product line.

Q: Are there inventory considerations for these parts?

A: Part 21451226 currently has 882 pieces in stock as new original inventory. Part 21109160 has 741 pieces in stock. Both are available for immediate procurement. However, part 21451226's obsolete status means existing inventory represents the final available supply.

Q: What certifications apply to part 21109160?

A: Part 21109160 is ROHS3 compliant and carries an ECCN classification of EAR99. The part is not subject to moisture sensitivity level restrictions (MSL: Not Applicable).

Q: How do the adhesive properties compare?

A: Part 21109160 features a Pressure Sensitive Adhesive (PSA) backing. The adhesive type for part 21451226 is not specified in available documentation.

Q: What is the shelf life for part 21109160?

A: Part 21109160 has a shelf life of 24 months from the date of shipment. Shelf life information for part 21451226 is not documented.