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DeWal Industries 303-5
PolyimidePrinted Circuit Board Masking

General Information
303-5 is a 5 mil, polyimide film and silicone adhesive is designed for high temperature masking applications, including the protection of printed circuit board gold finger contacts during wave soldering. This product can also be used in electrical insulation applications meeting class H requirements. These tapes are primarily used electrical applications including gold finger masking, insulation in transformers, coils, flat cables and high temperature harness wrapping.
Backing Adhesive
(unwind)		 Thickness
(total)		 Liner Type
(outer)
Polyimide Silicone 6.50 mil  

Adhesion to Steel
180° Peel		 Adhesive Activation Tensile Strength Elongation Percent
20.00 oz/in Pressure 125.00 lbs/in 50.00%

Min Application
Temp		 Min Service
Temp		 Max Short-Term
Temp		 Max Long-Term
Temp
40 °F 0 °F 500 °F  
Adhesive Tape Features
Adhesive Tape Applications
  • Designed for high temperature masking applications
  • Protecting printed circuit board gold finger contacts during wave soldering
  • Meets class H requirements
  • Primarily used electrical applications including gold finger masking, insulation in transformers, coils, flat cables and high temperature harness wrapping
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Comparable products

DeWal Industries 303-5 View Datasheet
PolyimidePrinted Circuit Board Masking
Backing Adhesive Thickness Adhesion
 Polyimide   Silicone   6.50mil   20.00oz/in 

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