workmanship problems pictorial reference
Pictorial Reference - Printed Wiring Assemblies
Pictorial Reference - Printed Wiring Boards
Pictorial Reference - Components
Pictorial Reference - Fiberoptics
Pictorial Reference - Wiring and Cabling
Pictorial Reference - Wire Bonding External Link
inspection pictorial reference
workmanship training

Guidance and Advice



WORKMANSHIP PROBLEMS PICTORIAL REFERENCE

 

Components
Lead fracture due to inadequate mechanical support

Leads fractured during vibration testing due to no mechanical support. Engineering drawing did not call out to specify additional mechanical support with staking material.

Additional parts were damaged by broken part bouncing around inside the enclosure.

Reference :
NASA-STD-8739.3 paragraph 8.1
Unusual environmental applications require special design measures to provide necessary environmental survival capability. Such measures shall be detailed on the appropriate engineering documentation. Engineering documentation shall prescribe which alternative approach is selected, as well as staking compounds and conformal coating requirements.




 

 


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