INT 871

Gold Finger Testing Tape

Essential QA Tool for all PCB manufacturers and consumers under BS9000 or other high quality specifications Adhesion strength guaranteed to BS specification Transparent for good visibility Leaves zero residue Each roll individually packaged and dated

For BS9000 Manufacturers INT 871 Gold Finger Testing Tape has been specifically designed for the testing of the adhesion of gold plating to base metal, as per the test described in BS9760: 1977, 1.2.5.4 Adhesion of Plating, the object of which is to assess the adhesion of plating to its base metal. The adhesion of plating to the base metal shall be measured on specimens similar to the patterns for edge-contact testing shown in the sectional specifications. For production testing the adhesion of plating shall be measured on the edge contacts or any specified conductors with a minimum area of 100mm² contained on the production board. Alternatively the test can be made on a suitable specimen contained in the board cut-off. The tape to be used for the test should be a non-transferable type with an adhesion value greater than 7.2 N per 25 mm width. The plated area must be thoroughly cleaned with a suitable organic solvent. The tape shall be applied to the plated area under test using the fixed-weight roller method as described in appendix F of BS3924:1965 care being taken to exclude all air bubbles. INT 871 will leave no residue. The plating and tape are inspected visually for flaking or blistering of the plating. Also useful for IPC test methods - from IPC-TM-650 Test Methods Manual 2.4.1 - Adhesion, Tape Testing 2.4.28 - Adhesion, Solder Mask (non-melting metals)

Specifications Base Material: Clear Polyester Base Thickness: 0.025 mm Adhesive: Special Colour: Transparent Adhesive Strength: 7.2N/25 mm Standard Width: 25 mm Standard Length: 33 metres Core: 3 in cardboard, standard Packaging: Individually boxed with our certificate of conformance Shelf Life: 6 months Obtain more information, samples or literature Contact details and how to order

Category: PCB Fabrication Inspection Adhesive Tapes Main Index

August 1997
Version 1.0