New Design Recommendations Said to Avoid Tombstoning

摘要

PHOENIX - A new white paper from EMS firm Suntron (suntron.com) purports to solve the problem of tombstoning in 0402 components.The Low Mass Solution to 0402 Tombstoning, authored by product engineer Eric Reno, details the engineering findings surrounding an age-old issue. Tombstoning occurs when a part is pulled up on one side, assuming a vertical orientation that looks like a graveyard headstone.In his paper, Reno says attempts to resolve tombstoning have overlooked one aspect: the physical component. "Although the physical component may be in compliance with EIA 0402, the physical characteristics of the component must be understood and ruled out," he writes.