AIA/NAS 3427-2013 pdf download MULTIPLE LEAD DEVICES, INDIVIDUAL PACKAGING OF
1 .0 SCOPE: This standard provides a method for the packaging, of multiple—lead electronic devices having five or more leads in various case configurations (e.g. flat, cylindrical, and plug-in types).
2.0 REFERENCES
2.1 NAS 850, General Packaging Standard
2.2 NAS853, Field Force, Protection from 3.0 REQUIREMENTS
3.1 General
3.1 .1 Requirements of General Packaging Standard NAS850 are a part of this standard except as noted herein.
3.1 .2 Leads may be used for positioning, but must not be subjected to loads or stresses that can damage them or their entry seals. Specific lead straightness requirements shall be indicated on the procurement document.
3.1 .3 All packaging materials in intimate contact with the item shall be non-dusting, chemically neutral and shall be as clean and as dry as practicable.
3.1 .4 Requirements of Field Force, Protection for Standard NAS853 are part of this standard except as noted herein. Items which may be damaged by Field Forces (electromagnetic, electrostatic effects), in a non-operating environment, shall be provided with an appropriate protection by the individual package or through a lead shorting device applied to the item.
3.1 .5 Tape or other sealing material when used shall not contact either the items or their leads.
3.1 .6 Orientation of Items: All items shall be uniformly oriented within the unit packages so that distinctive markings are aligned.
3.1 .7 Visual Inspection: The unit package design shall permit visual inspection of item markings without requiring removal of the item.
3.1 .8 Removal and Replacement Capability: Unit package shall be designed to permit safe and easy removal and replacement of the item without bending of leads, damage of the unit package or contents. Design shall allow replacement without addition of any adhesives, tapes, devices, or use of equipment.