Printed circuit board (PCB) is the most basic part of electronic equipment, it is a "bridge" between a ariety of electronic components and the electrical connection With the rapid development of electronic technology, people given the function on the PCB [...]
FR-4 practical significance FR-4 is a code for the class of flame resistant materials, which means that the resin material through the combustion state must be able to self-extinguish a material specifications, it is not a material name, but a [...]
In the current society, a large number of electronic products are widely used in everyone's daily work and life, so they need to ensure the reliability, and the vast majority of electronic systems through printed circuit board, must have a [...]
DRY(Dried Laminate) Reason Analysis: DRY is a very troublesome problem, it has a degree of difference, the seriousness is a comprehensive dry, minor occurred in the corner, the reason may be the glass cloth coupling agent and the poor compatibility of [...]
Human development is always closely related with the environment. In the electronics industry, the substrate of halogen-free and process lead-free is the the two core focus. Halogen-free substrate development work is in the mid-80s of 20th century, the real industrialization [...]
In the production of epoxy resin CCL, FR-4 CCL has maintained its dominant position. According to reports, the main reason is that this product has excellent overall performance and flame resistance, but also has a better function-price ratio, by the [...]
Precautions against Substrate Warpage Starting from the resin formula Using relatively long molecular chains, better flexibility of resin and curing agent, which is an important way to overcome the substrate warpage. Paper-based CCL solved problems of CCL warping effectively since [...]
Vertical layer orientation Bending strength A: Normal state: E-1/150，150±5℃≥340Mpa Parallel layer orientation the impact strength (simple beam method): ≥230KJ/m Insulation resistance after immersion(D-24/23): ≥5.0×108Ω Vertical layer orientation Electrical strength( In 90±2℃ transformer oil, board thickness:1mm ): ≥14.2MV/m Parallel layer orientation [...]
This type products were produced by the company has three substrate colors, namely, white, black and natural color. Mainly used in computers、LED industry、watches、general household electrical appliances and ordinary electronic products (such as VCD, DVD, toys, games, etc). Its main characteristics [...]