<P>Single-sided and double-sided <STRONG>copper-clad fibreglass PCB laminate </STRONG>photo etch boards coated with a <STRONG>high resolution photo-resist</STRONG>.</P><P>Microtrak laminates consist of <STRONG>FR4 epoxy-glass laminate </STRONG>sheets, dip-coated with a <STRONG>positive working photo-resist</STRONG>. The photo-resist contains a dye that provides a <STRONG>good contrast </STRONG>against the copper and allows boards to be easily inspected at the developing stage. Boards are protected by a specially designed<STRONG> light-proof blue film </STRONG>which allows them to be guillotined without the risk of fracturing the photo-resist.</P>
FR4 fibreglass laminate
Thickness 1.5mm
Copper thickness 35 micron
High resolution positive photo-resist
Supplied covered with blue light-proof film
Single or double sided
Wide range of sizes
Microtrack FR4 boards require a developer strength of 10 to 1. (Not 20 to 1 as with other products it replaces.) Exposure time is typically 2.5 to 3.5 minutes.
