Teflon is widely used in PCB production due to its lightweight yet strong characteristics, and it is particularly favored in applications requiring stringent tolerances. It maintains dimensional stability even at elevated temperatures and possesses flame retardant properties, further enhancing its suitability for high-speed applications. Teflon also provides robust physical strength and ensures thermal equilibrium.
Teflon PCB offers a series of excellent performances.
1. Material selection: This is the first step in producing Teflon PCB samples. Materials such as Wangling F4B, Rogers 5 series, and Rogers 3 series are all types of Teflon PCBs commonly used for flexible PCB prototyping. PTFE is a particularly useful material for PCB manufacturing due to its unique advantages.
2. Function test: Once the Teflon PCB sample is fabricated, it undergoes functional testing to ensure it performs as expected.
3. Temperature resistance: Teflon circuit boards can withstand extreme temperatures, a key reason for their use in military and aerospace applications. They operate in a temperature range of -454 to 600 °F (-270 to 315 °C), making them capable of withstanding temperature extremes without cracking.
4. High dielectric strength: Due to its high dielectric strength, Teflon PCBs do not conduct electricity, serving effectively as insulators. This property protects equipment from electrical breakdowns.
5. Durability: PTFE PCBs are highly durable, resisting oxidation, UV damage, embrittlement, and discoloration, thus offering a cost-effective solution.
6. Mechanical rigidity: Teflon PCBs exhibit mechanical stability, making them suitable for applications requiring robust mechanical performance. They also possess good thermal conductivity.
7. High temperature resistance: Long-term operational temperature: 200~260 ℃;
8. Low temperature resistance: Soft at -100 ℃;
9. Corrosion resistance: Resistant to aqua regia and all organic solvents;
10. Weather resistance: Best aging life among plastics;
11. High lubrication: Minimum friction coefficient (0.04) among plastics;
12. Non-stick: Minimum surface tension among solid materials, preventing adherence to any substance;
13. Physiological inertia: With excellent electrical performance, it qualifies as an ideal Class C insulating material. A thick layer of newspaper can block 1500V high voltage. Smoother than ice.
Teflon PCBs exhibit excellent comprehensive performance, including high temperature and corrosion resistance, non-stick properties, self-lubrication, excellent dielectric performance, and a very low friction coefficient. In PCB prototyping, Teflon is particularly suited for high-frequency boards, making it ideal for radar, high-frequency communication equipment, wireless appliances, and other fields. Generally, such boards are rarely used by mainstream manufacturers in PCB prototyping.
