gyges.com Index du Forum
Auteur Message
<  Fr4 pcb material properties
xysoom
MessagePosté le: Sam Jan 09, 2021 10:21 am  Répondre en citant



Inscrit le: 26 Mai 2020
Messages: 533
Localisation: &#20013;&#22269;

Fr4 pcb material properties


FR-4 is the primary insulating backbone upon which the vast majority of rigid printed circuit boards (PCBs) are produced. A thin layer of copper foil is laminated to one or both sides of an FR-4 glass epoxy panel. These are commonly referred to as copperclad laminates.To get more news about fr4 circuit board, you can visit pcbmake official website.

FR-4 copper-clad sheets are fabricated with circuitry interconnections etched into copper layers to produce printed circuit boards. More sophisticated and complex FR-4 printed circuit boards are produced in multiple layers, also known as multilayer circuitry.

When ordering a copper clad laminate board, the FR-4 thickness and the copper foil thickness must be specified separately.FR-4 thickness is specified in thou or inches, and common thicknesses range from 10 thou (0.010 in, 254 µm) to 3 inches (76 mm).

copper foil thickness is specified in units of ounces per square foot (oz/ft2), commonly referred to simply as ounce. Common thicknesses are 1 oz/ft2 (300 g/m2), 2 oz/ft2 (600 g/m2), and 3 oz/ft2 (900 g/m2). These work out to thicknesses of 34.1 µm (1.34 thou), 68.2 µm (2.68 thou), and 102.3 µm (4.02 thou), respectively. Some PCB manufacturers refer to 1 oz/ft2 copper foil as having a thickness of 35 µm (may also be referred to as 35 μ, 35 micron, or 35 mic).
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. The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this grade for a wide variety of electrical and mechanical applications.
Revenir en haut
Voir le profil de l'utilisateur Envoyer un message privé Adresse AIM
Montrer les messages depuis:   
Toutes les heures sont au format GMT + 1 Heure

Voir le sujet suivant
Voir le sujet précédent
Page 1 sur 1
gyges.com Index du Forum  >  Blabla

Poster un nouveau sujet   Répondre au sujet


 
Sauter vers:  
Vous pouvez poster de nouveaux sujets dans ce forum
Vous pouvez répondre aux sujets dans ce forum
Vous ne pouvez pas éditer vos messages dans ce forum
Vous ne pouvez pas supprimer vos messages dans ce forum
Vous ne pouvez pas voter dans les sondages de ce forum




Powered by phpBB and NoseBleed v1.05


Traduction par : phpBB-fr.com