High Tg PCB
Quantité : Proofing b Prix : 200-1500CNY
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.
Personne à contacter : Mo Jack, +15 9 76 88 36 32
Bonne affaire : acheter au vendeur
Nous vous invitons à lire nos conditions générales d'utilisations. Vous pouvez aussi vous rendre sur nos FAQ et consulter notre page d'informations sur les risques liés à la contrefaçon.
Cette page concerne les importateurs et exportateurs de High Tg PCB Rechercher dans la catégorie : Biens d'équipement Rechercher dans la catégorie : high |
Mardi 26 novembre 2013
Quantité : neduction - Prix : 1euro
CHER Mr dans le soucie d'étendre sont contrôle du marche du papier A4 80 G Le GROUPE EVASORA LTD ,mes a votre disposition des papier de qualité haut de gamme a des prix défiant toute concurrence recherche distributeur Papier A4 80g vente de papier a4 80g marque double a et navigateur...
GROUPE EVASORA LTD
- 237 - DOUALA-BUEA
- +237 690117124
Jeudi 21 mars 2024
Prix : illimité
Nous représentons une entreprise tunisienne (SETECSTRA) et nous vous proposons du poulet congélé en provenance de hambourg contactez nous vite : MR vei tokpa alain ou alainvei@outlook.fr ou +225 49875663 CIF TOUTE SÉCURITÉ WORLD PORT 610 USD / MT produit: Tout Halal poulet congelé...
setecstra
- 843 - abidjan
- +22 5 49 87 56 63
- +225 04619689/498756
Dimanche 29 mai 2016
Quantité : 200 - Prix : 7,15 €
- Avantages des luminaires LED OSRAM - - Qualité OSRAM - Produits LED de haute qualité pour les demandes exigeantes - Remplacement direct des luminaires conventionnels fluorescents ou halogènes - Le remplacement des luminaires standard permet jusqu'à 85 % d'économie d'énergie...