ANSI EIA-364-96A:2017 pdf download.Plated Through Hole Integrity Test Procedure for Electrical Connectors.
This test method applies to compliant pins inserted in printed circuit boards with plated-through- holes (PTH).
1.2 Object
This test is intended to describe a method for examining the distortion of a printed circuit board PTH, when a compliant pin is inserted. This is referred to as the ‘plated hole integrity’. Compliant pins may overly deform or crack the PTI-I and/or circuit traces if the compliant feature is not properly controlled or matched to the diameter of the PTH.
1.3 Informative reference
IEC 60352-5: Solderless connections – Part 5: solderless press-in connections. General requirements, test methods, and practical guidance.
1.4 Definitions
1 .4.1 Transverse section
A section taken parallel to the surface of a printed circuit board; see figure 1.
1.4.2 Longitudinal section
A section taken perpendicular to the surface of a printed circuit board; see figure 2.
1.4.3 Radial hole distortion
The measurement of how far the outside edge of the plated through hole has been distorted from the original hole contour as a result of the compliant section insertion. The measurement is taken from the transverse cross-section; see figure 1.
1.4.4 Plated through hole wall damage
Any damage such as cracked plating in the plated through hole.
1.4.5 Inner conductor layer damage
Includes any stretching of the inner conductor layers due to movement of the metal in the plated though hole as a result of compliant section insertion. This movement of the plated through hole metal may cause the inner conductor layers to bstretch and/or “crack”. The evaluation is taken from a longitudinal cross-section; see figure 2.
2 Test resources
2.1 Equipment
2.1.2 Low speed cutting saw or equivalent
2.1.3 Polishing equipment
2.1.4 Microscope with applicable magnification capability, (approximately between 50 and 250 times), to measure or observe the requirements as specified.
2.1.5 Photographic capability if required.
2.2 Materials
Material to mount the specimens as required. Typical materials are two-part metallurgical ‘cold mount’ epoxy or a thermoset or thermoplastic material suitable for ‘hot mounting’. Cold mounting is the preferred method.
2.3 Fixtures
No fixtures are required for this method.
3 Test specimen
3.1 Description
3.1.1 The specimen consists of a compliant pin inserted into a PTH. The reference document should indicate if this method is to be performed on a pin inserted once into a PTI-I or when a third pin is inserted into the same PTH, (usually this is performed to demonstrate ‘repairability’). If this method is used when a third pin is inserted, the previous two pins should each be new pins.ANSI EIA-364-96A pdf download.