Microtrak Positive Photoresist FR4 Single Sided 457 x 305mm - 1 Sheet

450 x 300mm single-sided copper-clad fibreglass PCB laminate photo-etch board coated with a high resolution photo-resist.

Microtrak laminates consist of FR4 epoxy-glass laminate sheets, dip-coated with a positive working photo-resist. The photo-resist contains a dye that provides a good contrast against the copper and allows boards to be easily inspected at the developing stage. Boards are protected by a specially designed light-proof blue film which allows them to be guillotined without the risk of fracturing the photo-resist.

• 457 x 305mm single-sided FR4 fibreglass laminate
• Thickness 1.5mm
• Copper thickness 35 micron
• High resolution positive photo-resist
• Supplied covered with blue light-proof film
• Exposure time is typically 2.5 to 3.5 minutes

Microtrack FR4 boards require a developer strength of 10 to 1 (not 20 to 1 as with other products it replaces)