With the advent of larger packages and higher densities/pitch the Industry has been concerned with the coplanarity of both the substrate package and the PCB motherboard. The iNEMI PCB Coplanarity WG generated a snapshot in time of the dynamic coplanarity of several PCB designs from four market sectors.
This paper addresses the question as to whether room temperature coplanarity measurements can predict the coplanarity at Lead-Free assembly temperatures. This paper investigated the trends in dynamic coplanarity between market sectors, board thickness and global versus local area of concern measurements. It also shares the learning and issues of undertaking dynamic coplanarity measurements of PCB motherboards... read article »
SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies. Membership Info | SMTA Certification | Bookstore
IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly. Membership Info | Training & Certification Programs | Standards & Publications - Online Store