1 Scope
This part of IEC 60749 provides a test method that is intended to evaluate and compare drop performance
of surface mount electronic components for handheld electronic product applications in an accelerated test environment, where excessive flexure of a circuit
board causes product failure. The purpose is to standardize the test board and test
methodology to provide a reproducible assessment of the drop test performance of surface-mounted
components while producing the same failure modes normally observed during product level test.
This document aims at prescribing a standardized test method and reporting procedure.
This is not a component qualification test and is not meant to replace any system level drop test that is
sometimes used to qualify a specific handheld electronic product . The standard is not meant to cover the drop test required to simulate shipping and
handling-related shock of electronic components or PCB assemblies. These requirements are already addressed in test methods such
as IEC 60749‑10. The method is applicable to both area array and perimeter-leaded surface mounted
packages.
This test method uses an accelerometer to measure the mechanical shock duration and
magnitude applied which is proportional to the stress on a given component mounted on a standard board. The test method described in IEC 60749‑40 uses strain gauge to measure the strain and strain rate of a board in the vicinity
of a component . The customer specification states which test method is to be used.
BS EN IEC 60749-37:2022 history
2022BS EN IEC 60749-37:2022 Semiconductor devices. Mechanical and climatic test methods. Board level drop test method using an accelerometer