RF EMI Absorb Sheet 21199171 Equivalent & Substitute Parts

Part Overview

The Laird Technologies EMI part number 21199171 is an RF EMI absorbing sheet with dimensions of 0.030" thickness × 12" × 12". This component is designed for electromagnetic interference suppression applications requiring RF energy absorption. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing procurement and system maintenance.

Substiute Parts

21199171

Laird Technologies EMIIn Stock: 91621199171 Datasheet

Current PartRFQ

21109145

Laird Technologies EMIIn Stock: 94321109145 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 mechanical envelope of the application. The main part specifies 12" × 12" × 0.030".

Material and Adhesive Properties: The absorbing material composition and adhesive type determine RF absorption characteristics and installation method.

Regulatory Compliance: ECCN and HTSUS classifications must align with export control and tariff requirements.

Product Status: Active parts are preferred over obsolete parts for long-term supply chain reliability.

The substitute part 21109145 maintains dimensional equivalence (12.000" × 12.000" square format) with a thickness of 0.039", representing a near-equivalent alternative from the same manufacturer's active product line.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Part 21199171 is obsolete. Part 21109145 is the active equivalent from Laird Technologies EMI and is the recommended substitute.

Compliance Status: Both parts carry EAR99 ECCN classification, indicating they are subject to the same export control framework. Part 21109145 provides additional compliance documentation with ROHS3 compliance and REACH unaffected status, supporting regulatory requirements in modern supply chains.

Dimensional Variance: The substitute part 21109145 has a thickness of 0.039" compared to the original 0.030". This 0.009" difference must be evaluated against the mechanical constraints of the application. The square dimensions (12.000" × 12.000") are equivalent.

Inventory Availability: Part 21109145 has 880 pieces in stock versus 841 pieces for the obsolete part, supporting long-term procurement strategy.

Frequently Asked Questions (FAQ)

Q: Can part 21109145 directly replace 21199171 in all applications?

A: Dimensional compatibility depends on the mechanical envelope. The thickness difference of 0.009" (0.030" vs. 0.039") must be verified against application constraints. Both parts maintain the 12" × 12" square format.

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

A: ECCOSORB® MCS is the active product line designation for the substitute part. This series information is not provided for the obsolete part 21199171.

Q: Are there differences in RF absorption performance between these parts?

A: Material composition (silicone rubber) and thickness are primary factors in RF absorption. The substitute part specifies silicone rubber material; the original part material is not documented. Thickness variation (0.030" vs. 0.039") affects absorption characteristics.

Q: What adhesive is used on part 21109145?

A: Part 21109145 uses Pressure Sensitive Adhesive (PSA). The adhesive type for the original part 21199171 is not specified.

Q: Are both parts suitable for high-temperature applications?

A: Part 21109145 specifies an operating temperature of 170°C. Operating temperature for part 21199171 is not documented.

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

A: Part 21109145 has a 24-month shelf life from the date of manufacture. Shelf life information for part 21199171 is not provided.

Q: Do export control classifications differ between these parts?

A: Both parts carry EAR99 ECCN classification. However, HTSUS codes differ (3919.90.5060 vs. 8529.90.9800), which may affect tariff treatment depending on import jurisdiction.