IPC-4203B establishes the classification system, the qualification and quality conformance requirements for dielectric films coated with an adhesive on one or both sides, which are to be used as cover material and/or bondply for flexible printed circuitry, as well as supported or unsupported adhesive films to be used in the fabrication of flexible printed circuitry.
IPC New Release: IPC-4203B, Cover and Bonding Material for Flexible Printed Circuitry
IPC-4203B does not cover non-flexible adhesives designed to be used in the rigid board areas of rigid flex constructions, which are covered in IPC-4101. Materials such as liquid-applied covercoat (see 3.1.8.3) are covered in IPC-SM-840 and are excluded from this document.
Number of pages 38. Released March 2018.
This standard establishes the classification system, the qualification and quality conformance requirements for dielectric films coated with an adhesive on one or both sides, which are to be used as cover material and/or bondply for flexible printed circuitry, and supported or unsupported adhesive films to be used in the fabrication of flexible printed circuitry. It does not cover non-flexible adhesives designed to be used in the rigid board areas of rigid flex constructions, which are covered in IPC-4101. Materials such as liquid-applied covercoat (see 3.1.8.3) are covered in IPC-SM-840 and are excluded from this document.
This specification supersedes both IPC-FC-232C and IPC-FC-233A and the requirements herein meet or exceed the requirements for Class 3 in these superseded documents. Note that conformance to Class 3 meets or exceeds conformance to Classes 1 and 2. IPC-4203 no longer utilizes the 3-class system.
1.1 Classification System The system described in 1.1.1 through 1.1.2.6 identifies adhesive coated dielectric films and flexible adhesive bonding films.
1.1.1 Nonspecific Designation A nonspecific designation is intended for use by designers on master drawings to designate their material choice. Further specification details may be indicated by using the specific designation in drawing notes and purchase documents. At the end of this standard is a series of material specification sheets designated by individual nonspecific designators. Each sheet outlines engineering and performance data for a flexible cover sheet and bonding film indicating base material type, adhesive type and method of reinforcement. The sheets are provided with a number for ordering purposes. For example, if a user wishes to order from specification sheet number 1, the number ‘‘1’’ would be substituted for the ‘‘S’’ in the designation example (i.e., IPC-4203/1).
Preview the IPC-4203B table of contents .pdf file.
