This standard classifies pads and pads commonly used in the industry (phenolic paper laminated pads, melamine wood pads, composite wood pads, aluminum foil cover plates, double-sided glued wood pads, UV wood pads, medium density The appearance, dimensions (length, width, thickness and tolerances, warpage, verticality), physical properties (density, tensile strength, surface hardness), environmental performance (of wood fiber mat, high-density wood fiber mat) ( Specific provisions are made on water absorption, formaldehyde release) and chemical properties (dimensional stability) requirements, inspection methods, inspection rules, packaging, marking, storage and transportation requirements.
T/CPCA 4403-2010 history
2010T/CPCA 4403-2010 Backup board for printed circuit board drilling