IEC 60454-3-7:1998 pdf download – Pressure-sensitive adhesive tapesfor electrical purposes – Part 3: Specifications for individual materials -sheet 7: Polyimide film tapes with pressure-sensitive adhesive

IEC 60454-3-7:1998 pdf download – Pressure-sensitive adhesive tapesfor electrical purposes – Part 3: Specifications for individual materials -sheet 7: Polyimide film tapes with pressure-sensitive adhesive.
This sheet of IEC 60454-3 contains the requirements for pressure•sensitive adhesive tapes made with polyimide film.
Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application, and not based on this specification alone.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this sheet of IEC 60454-3. At the time of publication, the editions indicated were valid. All normative documents are subject to revision and parties to agreements based on this sheet of IEC 60454-3 are encouraged to investigate the possibility of applying the most recent editions of the normative documents Indicated below11 . Members of IEC and ISO maintain registers of currently valid International Standards.
IEC 60426:1973. Test methods br determining electrolytic corrosion with insulating materials
IEC 60454-1:1992. Specifications tar pressure-sensitive adhesive tapes for electrical purposes — ParS 1: General requirements
lEG 60454.2:1994. Specification for pressure-sensitive adhesive tapes for electrical purposes — Part 2: Methods of test
1.3 DefInitions
Refer to IEC 60454.1 for definitions applicable to these materials.
2 Classification and designation
2.1 The products supplied according to this specification shall be classified as follows:
Type I: Products having properties characteristic of a polyimide film of nominal thickness 0.020 mm to 0,030 mm with a thermal index of 155 with an acrylic crosslinked adhesive.
Type 2: Products having properties characteristic of a polyimide film of nominal thickness 0.020 mm to 0.030 mm with a thermal index of 180 with a silicone Ihermosetting adhesive.
Type 3: Products having properties characteristic of a polylmide film of nominal thickness 0045 mm to 0055 mm with a thermal index of 155 with an acrylic crosslinked adhesive.
Type 4: Products having properties characteristic of a polyimide film of nominal thickness 0.045 mm to 0.055) mm with a thermal index of 180 with a silicone thermosetting adhesive.
2.2 The products shall be designated for ordering purposes as follows:
Type 1: IEC 4 54-3-7-1 JF-PL!1 55fA-Tx.
Type 2: IEC 454•3.7•2/F.Pt/1801S•Tc
Type 3: IEC 454-3-7-31F-P111551A-Tx.
Type 4: IEC 454-3-7-4)F-PI/ 1 80/S-To.
3 RequIrements
3.1 All applicable requirements of IEC 60454-1 shall apply to material lurnished under this specification.
3.2 The physical and electrical properties of products supplied according to this specification shall be within the limits listed in tables I and 2 when tested in accordance with the lest methods listed therein.
3.3 Thermal endurance
When required by the purchaser, the manufacturer shall provide evidence that when tested in accordance with clause 21 of IEC 60454-2, the product has a temperature index of not less than 155 tot types 1 and 3. and 180 for types 2 and 4. The exposure temperatures are 170 °C, 190 °C, and 210°C for types 1 and 3, and 200 °C, 225°C. and 250°C for types 2 and 4.
The end-point criterion used shall be:
for breakdown voltage: 1,5 kV for types I and 2, and 2.0 kV for types 3 and 4 (metal toll electrode).
4 Test methods
All tests shall be conducted in accordance with the appropriate clauses and subclauses of
IEC 60454-2.
5 MarkIng, labelling and packaging
Unless otherwise specified, all marking. labelling and packaging shall be in accordance with the requirements of IEC 60454-1.