What is the difference between 3240 epoxy board and FR4 epoxy board?

1. Translucent color.

The color of FR4 epoxy board is very natural, a bit jade, and the color of 3240 epoxy board is a bit blinking. It doesn’t look very natural. Most of the colors are not very uniform.

2. FR4 has good flame retardant performance.

FR4 is an improved product of 3240 epoxy resin board. The flame retardant performance of FR4 epoxy board meets the national UL94V-0 standard. 3240 epoxy resin board has no flame retardant properties.

3. FR4 is non-radiation and environmentally friendly.

3240 epoxy resin board is halogen-containing, which is not very environmentally friendly to the environment and the human body. It also does not conform to the country’s green sustainable development strategy. The FR4 epoxy board is just the opposite.

4. FR4 can self-extinguish from the fire.

FR4 can be naturally extinguished in the event of a fire.

5. FR4 has good dimensional stability.

The dimensional stability of FR4 is better than that of 3240, and during the pressing process, the thickness tolerance of FR4 is also much better than that of 3240, which is more suitable for processing.

6. Low water absorption.

Its water absorption (D-24/23, plate thickness 1.6mm): ≤19mg, which provides a good help for its use in wet transformers and other equipment.