Isotape® – Electrical adhesive tapes Isotape® 4428PV3

Isotape® 4428PV3 consists of a Kapton® film with silicone adhesive.

Isotape® 4428PV3 is manufactured from Kapton® film together with high performance silicone adhesive. It provides excellent protection for gold contacts on PCBs during wave soldering and hot air leveling processes. It is also designed for coil insulation at high temperature. For uses in generators, capacitors, transformers and others.

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  • Coil insulation at high temperatures
  • Generators
  • Capacitors
  • Transformers


UL-File-No.: E315249

Delivery forms

  • Width: from 2.5 mm in 0.1 mm increments
  • Core diameter: 76 mm (3")
  • Special widths on request


Transparent brown






12 months at room temperature. Adhesive tapes should be stored in a cool, dry place at approx. 20 °C and 50 - 60 % relative humidity. The storage period should not exceed 12 months.

Technical data

Property Unit of measure  
Type/ Ordering information    Isotape® 4428PV3
Standard colours    Transparent brown
Backing    Kapton®
Backing thickness  mm  0.025
Adhesive    Silicone
Total thickness  mm  0.064
Elongation at break  80
Thermal class    200 °C (N)
Dielectic strength  kV  7
Tensile strength  N/cm  55
Adhesiveness / Adhesion to steel  N/cm  2.4
UL FILE NO.    E315249