Electronics & PCB Assembly
In electronics assembly, tape is a process material. It masks during soldering and plating, splices carrier and cover tape, protects gold fingers, and insulates flexible circuits. It is judged on two things: does it survive the process, and does it come off clean.
Polyimide film tape is the workhorse here, with PET film tape covering less demanding steps.
What this application demands
High-temperature survival
Wave soldering and reflow expose masking tape to 200 °C and above for short periods.
Clean removal
Any adhesive residue left on a gold finger or a masking area becomes a yield loss.
Thin, conformable film
Tape must sit flat on fine-pitch parts and conform to flex circuits without bridging.
No contamination
Ionic contamination and silicone transfer are process risks, not cosmetic issues.
Recommended constructions
| Requirement | Recommended tape | Why |
|---|---|---|
| Wave-solder and reflow masking | PI5300 polyimide tape | Polyimide film with silicone adhesive — thin, heat resistant and clean-removing. |
| General high-temperature masking | PT5200 PET high-temperature tape | 0.050 mm PET film with 180 °C heat resistance; a lower-cost option below the polyimide range. |
| FPC and film fixing | PT5200 or PI5300 in narrow slit widths | Slit to the narrow widths flex-circuit assembly needs. |
| Non-stick process surfaces | TF8260 PTFE tape | Non-stick, low-friction surface for heat-sealing and hot-press tooling. |
How to specify it
| Specification point | What to state on your enquiry |
|---|---|
| Process temperature | Peak temperature and dwell time of the soldering or curing step |
| Residue requirement | Whether clean removal is verified and by which method |
| Slit width | Narrow widths and the tolerance your applicator can hold |
| Cleanliness class | Any ionic contamination or silicone-free requirement |
Common specification mistakes
Watch out for this: using a general masking tape
Paper and PVC masking tapes either scorch or leave residue at reflow temperatures.
Watch out for this: assuming all polyimide behaves alike
Adhesive chemistry drives residue performance; specify the removal requirement, not just the film.
Watch out for this: ordering the wrong slit width
Below about 3 mm, edge quality from slitting matters as much as the film itself.
Talk to a tape engineer
Send us the application, the operating temperature and the base material you have in mind. We will come back with a recommended construction, a datasheet and a quotation within one working day.