Selection Guide – How to Choose the Right PI Tape

Choosing the wrong polyimide tape is one of the most common reasons for production defects.

1. Temperature Requirement

If your process exceeds 230°C, always select high temperature polyimide tape with silicone adhesive.

2. Application Surface

• Smooth PCB surface → standard PI tape

• Rough or textured surface → thicker PI tape or higher tack adhesive

3. Electrical Insulation

For motors or transformers, prioritize polyimide insulation tape with certified dielectric strength.

4. Clean Removal

For masking applications, ensure the tape leaves no adhesive residue after thermal cycling.

Common Mistakes in Using Polyimide Tape

Even experienced manufacturers make avoidable mistakes:

• ❌ Using PET tape instead of PI tape in reflow soldering

• ❌ Selecting acrylic adhesive for ultra-high temperature cycles

• ❌ Ignoring tape thickness in tight-tolerance assemblies

• ❌ Assuming all “Kapton tapes” have identical performance

In SERP analysis, many complaints originate from misapplication, not product defects.