Microtrak FR4 Positive Photoresist Copper Clad Printed Circuit Board PCB

Rapid Brand: Rapid
<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.

Click here for processing instructions.

Thickness1.6mm
Copper thickness35µm
Dissipation factor35
Dielectric constant5.4
Solder bath resistance @ 260°C20s
Resist thickness5µm
Spectral response350 to 450nm
UV light energy requiredApprox. 50mJ/cm
Shelf life1 year @ 15 to 20°C
DeveloperCPD5
EtchantFerric chloride / fine etch crystals

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