CZ700LF-040 RF EMI Absorbing Sheet Equivalent & Substitute Parts

Part Overview

The CZ700LF-040 is an RF EMI absorbing sheet manufactured by Laird Technologies EMI, part of the CoolZorb 700LF series. This product is a square-shaped electromagnetic interference absorbing material with dimensions of 12.000" × 12.000" × 0.040" (304.80mm × 304.80mm × 1.02mm). The CZ700LF-040 is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for applications requiring continued supply, design updates, or alternative sourcing options while maintaining functional compatibility with RF EMI absorption requirements.

Substiute Parts

CZ700LF-040

Laird Technologies EMIIn Stock: 1205CZ700LF-040 Datasheet

Current PartRFQ

A17556-040

Laird Technologies EMIIn Stock: 1271A17556-040 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of RF EMI absorbing sheets is determined by the following critical parameters: thickness (overall), shape, and RoHS/regulatory compliance status. The CZ700LF-040 operates at 0.040" (1.02mm) thickness in a square configuration with RoHS Compliant certification.

The substitute part A17556-040 shares the same thickness specification of 0.040" (1.00mm) and maintains square geometry. Both parts are manufactured by Laird Technologies EMI and comply with RoHS requirements. The A17556-040 represents an active product from the CoolZorb 600 series, providing continued availability and support compared to the Not For New Designs status of the CZ700LF-040.

Substitution eligibility is based strictly on: matching thickness tolerance, identical shape geometry, and equivalent regulatory compliance certifications. No performance assumptions or testing recommendations are made beyond these specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The A17556-040 is the identified substitute for CZ700LF-040 based on matching thickness and square geometry specifications. The A17556-040 carries Active product status, ensuring continued manufacturer support and availability, whereas the CZ700LF-040 is designated Not For New Designs.

Both parts maintain RoHS compliance; the A17556-040 meets ROHS3 Compliant certification, representing current regulatory standards. The A17556-040 provides documented operating temperature range (-40°C ~ 175°C) and shelf life specifications (24 Months), parameters not specified for the CZ700LF-040.

The primary dimensional difference is the sheet size: CZ700LF-040 measures 12.000" × 12.000", while A17556-040 measures 18.000" × 18.000". This larger format may require application-level assessment for fit and coverage requirements. Both parts maintain identical 0.040" thickness specification within manufacturing tolerance.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters for substituting the CZ700LF-040?

A: Thickness (0.040"), shape (square), and RoHS compliance status are the primary substitution criteria. The A17556-040 matches these specifications.

Q: How do the dimensions differ between CZ700LF-040 and A17556-040?

A: The CZ700LF-040 is 12.000" × 12.000", while the A17556-040 is 18.000" × 18.000". Thickness remains 0.040" for both parts. Application requirements determine whether the larger sheet size is acceptable or requires custom cutting.

Q: What is the significance of the product status difference?

A: CZ700LF-040 is marked Not For New Designs, indicating it is obsolete or superseded. A17556-040 is Active, ensuring ongoing manufacturer support, documentation, and supply chain availability.

Q: Are both parts RoHS compliant?

A: Yes. CZ700LF-040 is RoHS Compliant, and A17556-040 is ROHS3 Compliant, meeting current regulatory requirements.

Q: What packaging differences exist?

A: CZ700LF-040 is supplied in Bulk packaging, while A17556-040 is supplied in Box packaging. Packaging selection may affect inventory management and handling procedures.

Q: Does the A17556-040 provide operating temperature specifications?

A: Yes. A17556-040 specifies an operating temperature range of -40°C ~ 175°C. The CZ700LF-040 does not provide operating temperature specifications in available documentation.