Overview
The Kepro 52-36G photosensitized FR-4 copper clad laminate is a high-quality, flame-retardant substrate for printed circuit board fabrication. This PCB laminate is flame retardant and is comprised of continuous woven glass cloth cured with epoxy resin. The 52-36G designation indicates a 3″ × 6″ board format pre-coated with photosensitive dry-film resist, eliminating the need for separate dry-film application. Photosensitized with dry-film, this material is ready for immediate photolithographic patterning and etching in PCB prototyping and low-volume production environments.
Key Features
- Pre-applied dry-film photoresist for immediate use in photolithographic processes
- Flame-retardant epoxy glass cloth composite substrate meeting FR-4 flame retardancy standards
- Single-sided 1 oz copper cladding (0.035″ copper thickness)
- 0.062″ (1.6 mm) laminate thickness, standard for double-sided PCB work
- 3″ × 6″ board size suitable for prototype and small-batch production
- Sealed, ready-to-use condition minimizes shelf storage issues
Technical Specifications
- Glass reinforcement: E-glass (alumino-borosilicate glass) woven into fabrics
- Resin system: Epoxy (bisphenol-A or equivalent)
- Copper weight: 1 oz (0.035″ or 0.9 mm thickness)
- Laminate thickness: 0.062″ ± 0.005″ (1.6 mm)
- Board dimensions: 3″ × 6″ × 0.062″
- Surface finish: Photosensitized dry-film resist pre-applied
- Copper sides: Single-sided
- Flame rating: FR-4 (UL94-V0)
Typical Applications
- PCB prototyping and design validation
- Small-batch and hobbyist circuit board production
- Educational electronics and engineering projects
- Custom trace layouts and single-sided circuits
- Photolithographic etching and circuit pattern development
- Replacement of worn or used PCB material stock
Compatibility & Replacements
Compatible With
- Standard PCB fabrication equipment and photolithographic tools
- Ferric chloride (FeCl₃) and ammonium persulfate etchants
- UV exposure systems and light tables for pattern transfer
- Standard PCB drilling, routing, and finishing machinery
Replaces / Drop-In Replacement For
- Older or depleted Kepro 52-36G stock
- Generic 3″ × 6″ photosensitized single-sided FR-4 boards
- Similar 1 oz copper, 0.062″ thickness laminates from other manufacturers
Works With
- UV-based dry-film photoresist development processes
- Chemical and electrochemical etching systems
- Solder mask and silkscreen application on finished boards
- Standard through-hole and surface-mount assembly workflows
