FR4 is not a certain material but means a materials grade designated by NEMA (National Electrical Manufacturers Association), among which "FR" stands for flame retardant. FR4 PCBs contain many kinds of materials, most are composed of tera-function (chemical functional group) epoxy resin, woven fiberglass cloth with filler, in the PCB industry generally refer to FR4 epoxy glass cloth laminates. Because of the good electrical insulation properties, high flatness, and excellent mechanical strength, FR4 PCBs are currently the most common used circuit boards in various fields.
PS is a 26 year's PCB supplier uses the top materials from level 1 suppliers for FR4 PCB manufacturing, quick-turn PCB delivery time reaches as fast as 24 hours.
Tg is the glass transition temperature, in other word, the melting point. When the temperature rises to a certain threshold, the FR4 PCB will change from "glass state" to "rubber state". The temperature at this time is called Tg of that board. That is, Tg is the highest temperature at which the FR4 PCB remains rigid, boards' mechanical and electrical properties will drop sharply when it beyond Tg temperature, which affects the service life of the product, so this value must be considered when select FR4 PCBs.
PS can provide FR4 PCB with low Tg, mid Tg and high Tg,
Please let me know your Tg requirement if need before quote. Know more characteristics of FR4 or other copper-clad laminates here.
Q1: How long have you been making FR4 PCB?
From 1993, we have been making FR4 PCBs for 26 years.
Q2: What is the advantage of FR4 PCB?
Excellent mechanical and dielectric properties, good heat (especially high Tg material)& moisture resistance and machinability.
Q3: Where do you purchase the raw materials of FR4 PCBs?
We directly purchase the materials from the famous suppliers, such as KB, Shengyi, ITEQ, etc, what brings cost-effective solutions to you.
Q4: What are needed to make a FR4 PCB?
Your Gerber file (RS-274-X), or design file like pcbdoc or brd file, what should at least contains 1 drill file, and 1 outline layer.
Q5: What's the lead time?
It depends on the quantity, quick turn PCBs can be delivered in 24 hours.
