Ipc-9704 Pdf
, formally titled "Strain Gage Test for PCB Assembly During Manufacturing and Handling" , is a standard developed by the Association Connecting Electronics Industries (IPC). It focuses specifically on measuring the mechanical strain placed on printed board assemblies (PBAs) during key manufacturing steps.
The IPC-9704 guideline outlines four key steps to implementing a strain gage test:
Understanding IPC-9704 PDF: Guidelines for PCB Strain Gage Testing and Reliability
The original IPC-9704 standard, published in June 2005, focused on strain gauge testing for printed wiring boards (PWBs). This foundational document laid out the basic guidelines for independent strain testing and provided a quantitative method for measuring board flexure and assessing risk levels. ipc-9704 pdf
The standard mandates the use of or three-element 0/45/90 degree rosettes . Placement is not random; gages must be mounted on the opposite side of the board from the component (mirror placement) or adjacent to the high-risk component.
Strain measurements can vary significantly between identical processes due to operator technique, equipment variation, or environmental factors. Statistical approaches and appropriate sample sizes are recommended.
Obtaining the official, authentic IPC-9704 PDF is essential for ensuring compliance, accuracy, and legal usage. Here are the legitimate channels for acquiring the document: , formally titled "Strain Gage Test for PCB
IPC/JEDEC-9704 (officially IPC/JEDEC-9704A ) is the "Printed Wiring Board Strain Gage Test Guideline." It provides standardized procedures for measuring mechanical strain on printed circuit boards (PCBs) to prevent damage to solder joints and components like BGAs during manufacturing and testing. National Instruments Direct Paper and Resource Links
The official, complete document is titled .
guideline that measures what strain your manufacturing process actually applies to the board. The difference between the two defines your safety margin Where to Access You can purchase and download the full IPC/JEDEC-9704A PDF directly from official standards organizations: JEDEC Website (often available as a free preview or for purchase). Are you looking to implement a strain testing plan for a specific process, like ICT or final assembly? This foundational document laid out the basic guidelines
Test fixtures use spring-loaded pins to press against the board. If the support pillars are misaligned or missing, the board warps under the pressure, cracking joints beneath adjacent BGAs. 2. Board Routing and Depanelization
If you acquire the official , here are the critical chapters you must study: