Overview
The Kepro 51-36G copper clad laminate is a high-quality FR-4 printed circuit board material measuring 3 inches × 6 inches × 0.062 inches thick. This single-sided copper clad laminate features 1oz of copper foil bonded to one face of the substrate, making it ideal for prototyping, hobby electronics, and small-batch PCB fabrication. Kepro laminates are engineered for reliable performance in circuit board etching and component mounting applications.
Key Features
- FR-4 substrate — Flame-retardant fiberglass-epoxy composite material
- Single-sided copper — 1oz copper foil on one face for simplified etching and routing
- Compact size — 3×6 inch format suitable for small to medium prototypes
- Standard thickness — 0.062 inch (≈1.6 mm) board thickness with integrated copper foil
- Etchable surface — Copper face accepts standard PCB photoresist and chemical etching processes
Technical Specifications
- Material: FR-4 (glass cloth epoxy laminate, flame retardant)
- Copper Weight: 1oz (≈35 µm thickness)
- Copper Configuration: Single-side (1S)
- Board Dimensions: 3 inches × 6 inches
- Overall Thickness: 0.062 inches (including copper foil)
- Substrate Color: Green (FR-4 standard)
- Flame Rating: UL 94 V-0
- Dielectric Constant: ~4.5 @ 1 MHz (typical FR-4)
- Moisture Absorption: <0.15% (FR-4 standard)
Typical Applications
- Custom PCB prototyping and breadboarding
- Educational electronics and maker projects
- Low-volume circuit board fabrication
- Photolithography and chemical etching projects
- Component testing and circuit validation
- Hobbyist and small-shop electronics manufacturing
Compatibility & Replacements
Compatible With
- Standard PCB photoresist and masking compounds
- Chemical etchants (ferric chloride, ammonium persulfate)
- CNC router and manual milling tools
- Hand-held and benchtop PCB drilling equipment
- Component soldering and wave solder processes
- Standard lead-free and lead-based solder alloys
Replaces / Drop-In Replacement For
- Kepro single-sided FR-4 laminates in equivalent dimensions
- Generic 3×6 inch 1oz FR-4 copper clad boards from equivalent suppliers
Works With
- PCB design software (Eagle, KiCad, Altium for artwork generation)
- Standard photoresist films and developer chemicals
- CNC and laser cutting/routing tools
- Hand layout and mask generation techniques
