High Tg PCB

• 

What is High Tg PCB

When the temperature rises to a certain area, the substrate will change from "glass state" to "rubber state", and the temperature at this time is called the glass transition temperature (Tg) of the plate. That is, Tg is the highest temperature (°C) at which the substrate remains rigid. That is to say, the ordinary PCB substrate material not only softens, deforms, melts, etc. at high temperatures, but also exhibits a sharp drop in mechanical and electrical properties.

The general Tg of the PCB is 130 degrees or more, the high Tg is generally greater than 170 degrees, and the medium Tg is greater than about 150 degrees.

A PCB board with a typical Tg ≥ 170 ° C is called a high Tg board.

The higher the Tg value, the more resistant the sheet is to deformation and the better its dimensional stability. The substrate material of IPC-4101B (2006) standard epoxy/E type fiberglass cloth is divided into three grades according to the height of Tg (commonly known as low, medium and high Tg). It is an important property in the resin of the sheet. It refers to the gradual change of the physical properties of the resin due to the gradual increase of the temperature. It is converted into a viscous state by the amorphous or partially crystalline hard and brittle nature at room temperature, such as glass. The critical temperature is very high and soft in another state like rubber.

Features of High pcb tg

The Tg of the substrate is improved, and the heat resistance, moisture resistance, chemical resistance, and stability resistance of the circuit board are improved. The higher the TG value, the better the temperature resistance of the sheet, especially in the lead-free process, the High Tg PCB application is more.

With the rapid development of the electronics industry, especially the electronic products represented by computers, the development of high functionality and high multi-layer requires the higher heat resistance of PCB substrate materials as an important guarantee. The emergence and development of high-density mounting technology represented by SMT and CMT makes PCBs more and more inseparable from the high heat resistance of substrates in terms of small aperture, fine wiring and thinning. Therefore, the difference between general FR-4 and high Tg FR-4 is that in the hot state, especially under heat absorption after moisture absorption, the mechanical strength, dimensional stability, adhesion, water absorption, thermal decomposition, There are differences in various conditions such as thermal expansion, and High Tg PCB is significantly better than ordinary PCB substrate materials. In recent years, customers who demand the production of High Tg PCB have increased year by year.

Welcome to custom high tg PCB directly from Shenzhen PCB Manufacturer at low cost.

Другие товары поставщика

	Gold Fingers PCB	Among the large-scale use of PCI and optical modules and cable sockets, the gold fingers PCB has been divided into: long and short gold fingers, br...
	Aluminium Core PCB	Aluminium Core PCB is a metal-based copper clad laminate with good heat dissipation function. Generally, the single panel is composed of a three-la...
	Flexible PCB	Custom flexible PCB board from PCBSKY,flex pcb chinaShenzhen, a RELIABLE PCB MANUFACTURER. Because of the advantages (for example, cost, space, an...
	Gold Fingers PCB	Among the large-scale use of PCI and optical modules and cable sockets, the goldfingers PCBhas been divided into: long and short gold fingers, brok...
	High Frequency PCB	Custom high frequency pcbfrom professional PCB manufacturer china Shenzhen with factory price in low cost. The high frequency of electronic equipm...

Похожие товары

	Electronic Rat Zapper	Продавец: Aosion International(Shenzhen) Co., Ltd.	When you searchbest way to catch a rat, you might find rat glue,rat poison traps,rat bait station...
	KW1-M1300-00X yamaha CL 8x2 0402 feeder	Продавец: ZK Electronic Technology Co., Limited	KM-05 MUFFLER SKM-05 MUFFLER KV8-M71Y9-00X BODY CYLINDER YAMAHA YV100X KM1-M7104-00X YV100II PI...
	16-КАНАЛЬНЫЙ ЦИФРОВОЙ ВЫХОД УДАЛЕННЫЙ МОНИТОРИНГ И УПРАВЛЕНИЕ ПЛК РАСШИРЕНИЕ МОДУЛЬ ETHERNET IO	Продавец: она Нженбе iLai Technology Co.,Ltd.	Комбинированный ввод-вывод BL190 Modbus TCP обеспечивает 26 вариантов плат ввода-вывода, включая ...
	Machine Bolt	Продавец: HEBEI YONGGUANG LINE EQUIPMENT CO.,LTD	Our inventory encompasses stainless steel machine boltscrafted from high-quality materials, inclu...
	Hot Line Tap Clamp	Продавец: HEBEI YONGGUANG LINE EQUIPMENT CO.,LTD	China hot line tap clampis a tool used for connecting and fixing electrical equipment. In power s...