Halogen-Free PCB Laminates Clearly define the scope of the declaration and verify each performance characteristic individually
"Halogen-free" is one aspect of material requirements; it is not a brand or a comprehensive performance rating. The applicable standards, relevant materials, and supporting documentation should be clearly identified, and the thermal, electrical, and processing requirements should then be verified separately.
Halogen-Free: Materials and Selection Criteria
This information is based on the manufacturer’s current documentation and the versions confirmed by both parties. The model descriptions do not constitute a commitment regarding real-time inventory or direct substitution; thickness, copper foil, and supply specifications are subject to project confirmation.
Defining the Target Audience and Scope
Ensure that the halogen-free requirement is applied to the specified copper-clad laminates, prepregs, and other materials covered by the project requirements to avoid ambiguity regarding the scope.
IS550H Sample Candidate
Isola officially classifies the IS550H as a halogen-free material. The project still requires verification of the corresponding data sheets, declarations, and availability for this specification.
Performance requirements to be confirmed separately
Halogen-free does not automatically imply a high Tg, low loss, or high thermal conductivity; the required specifications should be specified separately and verified.
When selecting a model, be sure to focus on these three points
File-to-Model Correspondence
Request the original manufacturer's declaration or test data corresponding to the complete grade, material form, and scope of application.
Distinguishing from Other Statements
Requirements for halogen-free materials and restricted substances must be specified and verified separately; a single label may not be used to cover all material requirements.
The substitution must be re-examined
When changing the material grade, verify the halogen-free certification, electrical properties, heat resistance, and processing conditions, and retain the approval records.
From Candidate Materials to Production Materials
01 · Lock Data Version
Record the complete part number, suffix, original factory data sheet, and design objectives, and list any uncertain parameters as items to be confirmed.
02 · Review of Stacking and Processes
Based on the core board, bonding material, copper foil, circuit patterns, and via structures, confirm the available specifications and manufacturing conditions.
03 · Replace after confirmation
Any changes to materials must be compared against electrical, thermal, mechanical, and documentation requirements; once confirmed by the design team, they must be incorporated into the production documentation.
Submit this information to minimize back-and-forth during the selection process.
- Design Documents
- Gerber or ODB++, drill holes, board dimensions, number of layers, board thickness, and copper thickness.
- Material Specifications
- Complete part numbers and suffixes, manufacturer specifications, lamination, copper foil, and permitted substitution ranges.
- Conditions of Use
- Operating frequency bands or signal requirements, thermal processes, environmental and structural constraints.
- Delivery Requirements
- Quantity, target delivery date, inspection requirements, and required material certificates.
Common Selection Issues
Are "halogen-free" and "RoHS" the same thing?
These are not the same declarations. Please specify the requirements separately and verify the documents and scope of application for the corresponding materials.
Do halogen-free laminates always have a high Tg?
Not necessarily. "Halogen-free" and "Tg" are different selection criteria, so you'll need to check the specific grade data for each one separately.
Does the use of halogen-free substrate prove that the entire board meets all requirements?
The scope of the entire board cannot be determined based solely on the substrate. It must be clarified whether solder mask, other insulating materials, or assembly components are also involved, and each item must be verified individually.
Review the materials, then proceed with prototyping and production
Shenzhen Jingpeng Electronics | Submit your halogen-free material requirements, design documents, and quantities for review of supplier specifications and manufacturing solutions.
