<h2>Overview</h2>
<p>The Kepro FR-4 copper clad laminate 1oz is a single-sided photosensitive printed circuit board manufactured by KEPRO Circuit Systems (model KC1-66G). This 6x6x0.062″ laminate combines flame-retardant FR-4 substrate with a pre-sensitized copper surface, enabling rapid prototyping and custom circuit board production without requiring external photoresist application.</p>
<h2>Key Features</h2>
<ul>
<li>Single-sided 1 oz copper foil bonded to FR-4 substrate</li>
<li>Pre-sensitized with dry-film photoresist for direct UV exposure</li>
<li>Flame-retardant glass-epoxy composite construction</li>
<li>6″ × 6″ × 0.062″ standard prototype board size</li>
<li>Ready for chemical etching and component assembly</li>
<li>Suitable for hobbyist and professional PCB fabrication</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Laminate Material:</strong> FR-4 (Glass-Reinforced Epoxy Resin)</li>
<li><strong>Copper Weight:</strong> 1 oz (approximately 35 μm thickness)</li>
<li><strong>Copper Sides:</strong> Single-sided</li>
<li><strong>Dimensions:</strong> 6″ × 6″ × 0.062″ (152.4 mm × 152.4 mm × 1.57 mm)</li>
<li><strong>Photosensitization:</strong> Pre-applied dry-film photoresist</li>
<li><strong>Flame Rating:</strong> UL 94 V-0 (FR-4 standard)</li>
</ul>
<h2>Typical Applications</h2>
<ul>
<li>Rapid PCB prototyping and development</li>
<li>Custom circuit board fabrication for small-batch production</li>
<li>Educational projects and hobbyist electronics</li>
<li>Industrial control system prototyping</li>
<li>Microwave and RF circuit testing</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Standard chemical etchants (ferric chloride, cupric chloride, ammonium persulfate)</li>
<li>UV light sources (254 nm or 365 nm wavelength lamps)</li>
<li>Standard PCB drilling, routing, and component soldering equipment</li>
<li>Solder mask and silkscreen processes</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<ul>
<li>Other 6x6x0.062″ single-sided FR-4 photosensitive laminates</li>
<li>Non-photosensitive copper clad boards with manual photoresist application</li>
</ul>
<h3>Works With</h3>
<ul>
<li>Standard PCB CAD software (Eagle, KiCAD, Altium Designer, OrCAD)</li>
<li>Gerber file generation and UV exposure systems</li>
<li>Any modern component soldering method (wave, reflow, hand-soldering)</li>
</ul>
