PCB Board Fiber FR2 20x20cm

Description

roduct Overview: FR2 Phenolic Paper PCB (20x20cm)

This 20cm x 20cm FR2 (Flame Retardant level 2) copper-clad laminate is a cost-effective, entry-level substrate designed for prototyping, educational projects, and low-cost consumer electronics. Unlike FR4 (which is made of fiberglass and epoxy), FR2 is composed of synthetic resin-bonded paper.

Technical Specifications

Key Characteristics

• Cost-Efficiency: FR2 is significantly cheaper than FR4, making it the ideal choice for single-use or “disposable” electronics where high structural integrity is not required.

• Ease of Fabrication: Because the base material is paper-based, it is much softer than fiberglass. You can easily cut it to custom shapes using a simple hacksaw or heavy-duty shears, and it is very gentle on drill bits.

• Mechanical Limitations: FR2 is more brittle and has lower mechanical strength than FR4. It is not suitable for applications subject to high vibrations, mechanical stress, or extreme temperature fluctuations.

• Electrical Properties: It is suitable for low-frequency, low-voltage hobbyist circuits. It is not recommended for high-frequency (RF) or high-speed digital designs, as its dielectric constant is less stable than that of FR4.

Ideal Use Cases

1. Hobbyist Prototyping: Perfect for developing simple LED circuits, power supplies, or basic logic breadboarding.

2. Educational Tools: An excellent substrate for teaching students about PCB etching, soldering techniques, and basic circuit assembly.

3. Low-Cost Consumer Goods: Commonly found in simple household electronics like toys, basic remote controls, or low-cost timers where thermal and mechanical loads are minimal.

Fabrication Advice

• Soldering: Use a lower-wattage soldering iron (25W–30W) and be cautious. Prolonged heat application can cause the copper pads to lift or the phenolic board to scorch.

• Etching: It is fully compatible with standard etching solutions (such as Ferric Chloride or Ammonium Persulfate).

• Storage: Store in a dry, cool place. Phenolic paper can absorb moisture from the air over time, which may slightly affect its insulating properties.