RF EMI Absorbing Sheet ECCOSORB® JCS 85000047 Equivalent & Substitute Parts

Part Overview

The Laird Technologies EMI part number 85000047 is an RF EMI absorbing sheet from the ECCOSORB® JCS series, featuring silicone rubber construction with pressure-sensitive adhesive (PSA). This 12.000" × 12.000" × 0.020" square sheet is designed for electromagnetic interference suppression applications. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility for RF EMI absorption in electronic enclosures and shielding applications.

Substiute Parts

85000047

Laird Technologies EMIIn Stock: 118985000047 Datasheet

Current PartRFQ

85095011

Laird Technologies EMIIn Stock: 79485095011 Datasheet

MFR RecommendedRFQ

85095021

Laird Technologies EMIIn Stock: 89085095021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF EMI absorbing sheets is determined by the following critical parameters:

Dimensional Compatibility: Length, width, and thickness must match or provide equivalent coverage and absorption characteristics. The main part 85000047 specifies 12.000" × 12.000" × 0.020" dimensions.

Adhesive System: Both the main part and substitutes utilize pressure-sensitive adhesive (PSA), ensuring installation method compatibility.

Material Composition: The main part uses silicone rubber; substitute parts employ silicone elastomer, which maintains functional equivalence for RF EMI absorption.

Regulatory Compliance: All parts maintain ROHS3 compliance and EAR99 classification, ensuring regulatory interchangeability.

Operating Temperature Range: The main part operates from -70°C to 177°C. Substitute parts must support this range or demonstrate equivalent thermal stability.

Series Evolution: The substitute parts belong to the Eccosorb™ JCS-Next series, representing the active product line evolution from the obsolete ECCOSORB® JCS series.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 85095021

Part number 85095021 is the direct equivalent for applications requiring identical thickness (0.020" / 0.51mm) and operating temperature range (-70°C ~ 177°C). This substitute maintains full dimensional and thermal compatibility with the obsolete 85000047. Both parts are ROHS3 compliant and utilize PSA adhesive systems. The 85095021 is classified as active product status, ensuring long-term availability and supply chain continuity. Material composition differs (silicone elastomer versus silicone rubber), but both formulations are functionally equivalent for RF EMI absorption in the specified temperature range.

Secondary Substitute: 85095011

Part number 85095011 serves applications where reduced thickness (0.010" / 0.25mm) is acceptable or preferred. This substitute maintains identical length and width dimensions (12.000" × 12.000") and identical adhesive system (PSA). The 85095011 is active product status and ROHS3 compliant. Operating temperature specification is not provided for this part; applications requiring confirmed -70°C ~ 177°C operation should prioritize 85095021. The reduced thickness of 85095011 may be advantageous in space-constrained enclosures where absorption performance at half thickness is sufficient.

Frequently Asked Questions (FAQ)

Q: Can 85095011 replace 85000047 in all applications?

A: Part 85095011 maintains dimensional compatibility (12.000" × 12.000" square format) and adhesive system compatibility (PSA). However, thickness differs (0.010" versus 0.020"), which affects absorption performance. Operating temperature specification is not provided for 85095011. Applications requiring confirmed -70°C ~ 177°C operation should use 85095021.

Q: What is the difference between silicone rubber and silicone elastomer in these absorbing sheets?

A: Both materials are used in RF EMI absorbing sheet construction. The main part 85000047 uses silicone rubber; substitutes 85095011 and 85095021 use silicone elastomer. Both formulations provide RF EMI absorption functionality. Material selection reflects product line evolution from ECCOSORB® JCS to Eccosorb™ JCS-Next series.

Q: Is 85095021 a direct drop-in replacement for 85000047?

A: Part 85095021 matches 85000047 in length (12.000"), width (12.000"), thickness (0.020" / 0.51mm), operating temperature range (-70°C ~ 177°C), adhesive type (PSA), and regulatory compliance (ROHS3). Dimensional and functional compatibility is confirmed. The part is active product status, ensuring availability.

Q: Why is 85000047 classified as obsolete?

A: Part 85000047 belongs to the ECCOSORB® JCS series, which has been superseded by the Eccosorb™ JCS-Next product line. Laird Technologies EMI has transitioned manufacturing to the active JCS-Next series (parts 85095011 and 85095021), which provide equivalent or improved performance characteristics.

Q: Can I use 85095011 (0.010" thickness) where 85000047 (0.020" thickness) was specified?

A: Thickness affects RF EMI absorption performance. Halving thickness from 0.020" to 0.010" reduces absorption capability. Use 85095011 only if application requirements confirm that 0.010" thickness provides sufficient absorption. For equivalent absorption performance, use 85095021 (0.020" thickness).

Q: Are all three parts (85000047, 85095011, 85095021) ROHS3 compliant?

A: Yes. All three parts are ROHS3 compliant, confirming regulatory equivalence for applications requiring ROHS certification.

Q: What is the shelf life for substitute parts 85095011 and 85095021?

A: Part 85095021 specifies 12-month shelf life from date of shipment, matching the main part 85000047. Part 85095011 does not specify shelf life in available documentation.