When designing the platedthroughhole pth, acdi sets the goal of 15 mils over the diameter of the lead, as this leaves 7. Class 2 requires a 50% barrel fill, while class 3 requires a 75% barrel fill. Acceptable class 1, 2, 3 target class 1, 2, 3 process indicator class 1, 2, 3 class 1, 2, 3 a process indicator is a condition that does not affect the form, fit and function of a product. However the board designer needs to be aware of how the design is affecting the final assembly. Dispositions include, but are not limited to, rework, use as is, scrap or repair. A defect for class 1 automatically implies a defect for class 2 and 3. Ipc a610 acceptability of electronic assemblies pdf download. While the principal members of the telecom ipc a 610 addendum task group 731bc of the prod. These standards govern what is considered acceptable in terms of build criteria for solder joints, heel fillets, component placement tolerance and any and all things related to building an electronic circuit card assembly.
We would like to thank them for their dedication to this effort. Ipca610g is the latest revision of the most widely used electronics assembly standard in the world. Depending on the design of the boards, this may or may not be achievable. Ipca610 august 1983 association connecting electronics industries this page intentionally left blank. It is very common to have a pcb be designed to meet ipca600 class 2 and still achieve ipca610 class 3 assembly. Ipc a 610g acceptability of electronic assemblies developed by the ipc a 610 task group 731b of the acceptability subcommittee 731 of the product assurance committee 730 of ipc usersof this publicationare encouragedto participatein the developmentof futurerevisions. Class 2 and class 3 are workmanship standards as defined by ipca610 for building electronics assemblies. However, process indicators signal a lack of good workmanship to the customer and should be used to improve the manufacturing processeven though.