3M 3M Amber Polyimide Electrical Tape, 25.4 mm x 33 m

This electrical tape is a thin amber insulating film designed for high-temperature masking and electrical insulation in electronics, automation and electrical work. It combines a polyimide backing with a silicone-based adhesive to provide stable performance during PCB processing and general wiring tasks where thermal resistance and flexible conformability are required.

• Silicone adhesive maintains adhesion after repeated thermal cycles
• Polyimide backing provides thermal resistance up to 80°C
• Thin 0.066mm profile minimises bulk on tight assemblies
• Available in 25.4mm width for precise edge definition
• Long 33m roll reduces changeovers in production runs

• Suitable for masking during soldering and wave-solder operations
• Ideal for insulating wires in control panels and harnesses
• Used for protecting circuit board areas during rework
• Can be used for temporary bundling of small cable runs
• Used with thermal processes in Electronic Assembly lines

The silicone adhesive retains tack and resists softening at elevated temperatures typical of soldering environments, helping prevent slumping or residue migration.

Yes, the flexible polyimide film conforms to contours and maintains contact via the silicone adhesive, enabling reliable coverage on curved components and connectors.

Store in a cool, dry place away from direct sunlight to maintain adhesive properties and prevent premature ageing of the polyimide backing.

The thin film and 25.4mm width allow precise placement and minimal added thickness, making it appropriate for delicate PCB masking and component protection.