What is 370HR material?
370HR laminate and prepreg products are manufactured with a unique high performance multifunctional epoxy resin, reinforced with electrical grade (E-glass) glass fabric. This system provides improved thermal performance and low expansion rates in comparison to traditional FR-4 while retaining FR-4 processability.
What is 370 HR?
370HR is a high performance 180°C glass transition temperature (Tg) FR-4 system for multilayer printed wiring board (PWB) applications where maximum thermal performance and reliability are required.
What is ipc4101?
IPC 4101, “Specification for Base Materials for Rigid and Multi-layer Printed Boards,” covers the requirements for laminate or prepreg used primarily for rigid or multi-layer printed boards for electrical and electronic circuits.
What is prepreg and core in PCB?
The prepreg and core are two different parts of the PCB. For starters, the core is an FR4 material with copper traces. Whereas, the prepreg is fiberglass impregnated with resin. It is the prepreg that holds the core together on the PCB.
What is FR4 epoxy?
FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
What is FR4 made of?
FR4 is a glass fiber epoxy laminate. It is the most commonly used PCB material. A 1.60mm FR4 uses 8 layers of (7628) glass fiber material. The red UL/manufacturers logo is in the middle (layer 4).
What is ipc2222?
Used in conjunction with IPC-2221, IPC-2222 establishes the specific requirements for the design of rigid organic printed boards and other forms of component mounting and interconnecting structures. This standard applies to single-sided, double-sided or multi-layered boards.
What is prepreg material in PCB?
Prepreg is a dielectric material that is sandwiched between two cores or between a core and a copper foil in a PCB, to provide the required insulation. You can call it a binding material as well. It either binds two cores or a core and a copper foil. This plays a critical role in PCB design and manufacture.
What is glass epoxy laminate?
FR-4 glass epoxy is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios. With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength.
What is PCB FR4?
FR4 is the most common material grade that comprises fabricated circuit boards. ‘FR’ indicates the material is flame retardant and the ‘4’ indicates woven glass reinforced epoxy resin. FR4 is a good general purpose material for PCB fabrication; however, alternative materials are available.