Ipc-9704 Pdf -
The IPC-9704 guideline provides standardized methodologies for using strain gages to measure and control mechanical stress on printed circuit boards, aiming to prevent solder joint cracking and pad cratering during manufacturing processes. It details requirements for testing critical procedures such as ICT, PCB depaneling, and connector assembly, often in conjunction with IPC/JEDEC-9702 for monotonic bend testing. For more information, you can find the full document through official IPC resources.
- Design for reliability (DfR) principles
- PCB material selection and qualification
- Manufacturing process control and verification
- Assembly process control and verification
- Testing and inspection methods
- Reliability and failure analysis
IPC/JEDEC-9704A provides industry-standard guidelines for measuring mechanical strain on Printed Circuit Assemblies to prevent solder joint damage during manufacturing processes like testing and depanelization. It mandates specific techniques, such as using three-element rosette strain gages and high-frequency data acquisition, to ensure, in particular, the structural integrity of BGA components. For technical implementation details, refer to the [Link: PCBSync guide https://pcbsync.com/ipc-jedec-9704/]. ipc-9704 pdf
Key Features of IPC-9704
Test Methods
I see too many small-to-mid size manufacturers skip strain gauge testing because "we've always done it this way" or "the board feels fine." and connector assembly