RF EMI Absorber Sheet 12X36 - Equivalent & Substitute Parts (Laird Technologies EMI 21451224)

Part Overview

The Laird Technologies EMI model 21451224 is an RF EMI absorber sheet with dimensions of 12X36 inches, designed for electromagnetic interference suppression applications. This part is classified as Obsolete and is no longer in active production. Due to its discontinued status, identifying functionally equivalent active alternatives is essential for ongoing system design, maintenance, and procurement activities. The substitute part listed maintains the same physical dimensions and functional purpose while offering current availability and active product support.

Substiute Parts

21451224

Laird Technologies EMIIn Stock: 109921451224 Datasheet

Current PartRFQ

21451253

Laird Technologies EMIIn Stock: 108721451253 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 21451253 is classified as a direct functional equivalent based on the following criteria:

Substitution Logic:

• Identical Physical Dimensions: Both parts are specified as 12X36 inch RF EMI absorber sheets
• Same Manufacturer: Both are manufactured by Laird Technologies EMI, ensuring consistent material composition and electromagnetic absorption characteristics
• Identical Functional Purpose: Both are RF EMI absorber sheets designed for the same application category
• Active Product Status: The substitute part (21451253) is in Active status, providing current availability and manufacturer support, whereas the main part (21451224) is Obsolete
• Regulatory Compliance: The substitute part carries RoHS Compliant certification and EAR99 ECCN classification, meeting modern regulatory requirements

Key Parameters Determining Substitution:

1. Physical dimensions (12X36 inches)
2. Product category (RF EMI absorber sheet)
3. Manufacturer (Laird Technologies EMI)
4. Moisture sensitivity classification (Not Applicable for both)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Laird Technologies EMI 21451253

The substitute part 21451253 is the appropriate selection for applications currently using or specifying the obsolete 21451224. Selection rationale:

1. Product Status Alignment: The substitute part maintains Active product status, ensuring continued manufacturer support, technical documentation availability, and long-term procurement viability.

2. Regulatory Compliance: The substitute part carries RoHS Compliant certification and a valid ECCN classification (EAR99), meeting current regulatory requirements for component procurement and export control compliance.

3. Functional Equivalence: Both parts share identical physical dimensions (12X36 inches) and functional classification as RF EMI absorber sheets from the same manufacturer, ensuring electromagnetic performance compatibility.

4. Series Identification: The substitute part is identified as part of the ECCOSORB® SF series, which represents the current product line for this application category from Laird Technologies EMI.

5. Inventory Availability: Both parts show equivalent inventory levels, indicating current stock availability for the substitute part.

Frequently Asked Questions (FAQ)

Q1: Can the 21451253 directly replace the 21451224 in existing designs?

A: Yes. Both parts are 12X36 inch RF EMI absorber sheets from Laird Technologies EMI with identical physical dimensions and functional classification. The 21451253 is the active equivalent of the obsolete 21451224.

Q2: What is the primary reason for substitution?

A: The main part (21451224) is classified as Obsolete and no longer in active production. The substitute part (21451253) is in Active status, providing current availability and manufacturer support.

Q3: Are there any regulatory differences between the two parts?

A: Yes. The substitute part (21451253) carries RoHS Compliant certification and a valid ECCN classification (EAR99), whereas the main part shows OBSOLETE classification. The substitute meets current regulatory requirements.

Q4: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both parts are classified as Not Applicable for Moisture Sensitivity Level (MSL), indicating no special moisture control or storage requirements during handling or assembly.

Q5: What is the ECCOSORB® SF series designation?

A: ECCOSORB® SF is the product series identifier for the substitute part 21451253, indicating its classification within Laird Technologies EMI's current RF EMI absorber product line.

Q6: Are the HTSUS codes different, and does this affect procurement?

A: Yes, the codes differ. The substitute part has a valid HTSUS code (3921.90.4090) for tariff and trade classification purposes, whereas the main part shows a placeholder code. This reflects the substitute's current active status in the product catalog.

Q7: Is the substitute part suitable for new design implementations?

A: Yes. The Active product status, RoHS compliance, and valid regulatory classifications make the 21451253 appropriate for new designs requiring RF EMI absorption in 12X36 inch sheet format.