Tape Thickness
Definition
Total thickness including substrate and adhesive layers, key for performance and cost.
Historical Background
1970s: beta-ray gauges achieved +/-1 um precision.
Example
+0.01 mm adds ~10% adhesive and cost. Like clothing: too thick overheats, too thin provides no warmth.
Formula
Total Thickness = Substrate + Top Adhesive + Bottom Adhesive
Core Concepts
Performance-cost balance point, measured via tolerance like +/-5 um.
Extended Applications
Electronic: +/-1 um; packaging: +/-10; automotive: +/-5; optical: +/-0.5 um.